diff --git a/Cargo.lock b/Cargo.lock
index 33b072f..bb688e6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1652,7 +1652,7 @@ checksum = "09edd9e8b54e49e587e4f6295a7d29c3ea94d469cb40ab8ca70b288248a81db2"
 
 [[package]]
 name = "lesavka_client"
-version = "0.22.17"
+version = "0.22.18"
 dependencies = [
  "anyhow",
  "async-stream",
@@ -1686,7 +1686,7 @@ dependencies = [
 
 [[package]]
 name = "lesavka_common"
-version = "0.22.17"
+version = "0.22.18"
 dependencies = [
  "anyhow",
  "base64",
@@ -1698,7 +1698,7 @@ dependencies = [
 
 [[package]]
 name = "lesavka_server"
-version = "0.22.17"
+version = "0.22.18"
 dependencies = [
  "anyhow",
  "base64",
diff --git a/client/Cargo.toml b/client/Cargo.toml
index b1cdd1b..e15ccc2 100644
--- a/client/Cargo.toml
+++ b/client/Cargo.toml
@@ -4,7 +4,7 @@ path                    = "src/main.rs"
 
 [package]
 name                    = "lesavka_client"
-version                 = "0.22.17"
+version                 = "0.22.18"
 edition                 = "2024"
 
 [dependencies]
diff --git a/client/src/sync_probe/capture.rs b/client/src/sync_probe/capture.rs
index 7fa98ca..99a6a8b 100644
--- a/client/src/sync_probe/capture.rs
+++ b/client/src/sync_probe/capture.rs
@@ -68,7 +68,7 @@ const AUDIO_SAMPLE_RATE: i32 = 48_000;
 #[cfg(any(not(coverage), test))]
 const AUDIO_CHANNELS: usize = 2;
 #[cfg(any(not(coverage), test))]
-const AUDIO_CHUNK_MS: u64 = 10;
+const AUDIO_CHUNK_MS: u64 = 20;
 #[cfg(any(not(coverage), test))]
 const AUDIO_PULSE_FREQUENCY_HZ: f64 = 1_800.0;
 #[cfg(any(not(coverage), test))]
diff --git a/client/src/sync_probe/capture/runtime.rs b/client/src/sync_probe/capture/runtime.rs
index 23b9dd0..3b5a23c 100644
--- a/client/src/sync_probe/capture/runtime.rs
+++ b/client/src/sync_probe/capture/runtime.rs
@@ -271,6 +271,7 @@ fn spawn_audio_thread(
             let packet = AudioPacket {
                 id: 0,
                 pts: source_pts_us,
+                frame_duration_us: AUDIO_CHUNK_MS.saturating_mul(1_000) as u32,
                 data: chunk,
                 ..Default::default()
             };
diff --git a/client/src/sync_probe/capture/tests/runtime_packets.rs b/client/src/sync_probe/capture/tests/runtime_packets.rs
index 8fa323b..cf88ec3 100644
--- a/client/src/sync_probe/capture/tests/runtime_packets.rs
+++ b/client/src/sync_probe/capture/tests/runtime_packets.rs
@@ -19,12 +19,17 @@ async fn runtime_audio_probe_emits_nontrivial_pcm_packets() {
     let mut packet_count = 0usize;
     let mut total_bytes = 0usize;
     let mut largest_packet = 0usize;
+    let expected_duration_us = 20_000;
 
     loop {
         let next = audio_queue.pop_fresh().await;
         let Some(packet) = next.packet else {
             break;
         };
+        assert_eq!(
+            packet.frame_duration_us, expected_duration_us,
+            "synthetic audio metadata should match its PCM payload duration"
+        );
         packet_count += 1;
         total_bytes += packet.data.len();
         largest_packet = largest_packet.max(packet.data.len());
@@ -334,7 +339,7 @@ async fn runtime_probe_hevc_video_and_audio_can_form_one_local_bundle() {
         videos.len()
     );
     assert!(
-        audios.len() >= 120,
+        audios.len() >= 90,
         "expected local PCM audio packets, got {}",
         audios.len()
     );
@@ -357,8 +362,8 @@ async fn runtime_probe_hevc_video_and_audio_can_form_one_local_bundle() {
         video.pts
     );
     assert!(
-        paired_audio.iter().any(|packet| packet.data.len() >= 1_920),
-        "expected paired audio to carry full 10ms stereo PCM packets"
+        paired_audio.iter().any(|packet| packet.data.len() >= 3_840),
+        "expected paired audio to carry full 20ms stereo PCM packets"
     );
 }
 
diff --git a/client/src/sync_probe/runner/bundled_transport.rs b/client/src/sync_probe/runner/bundled_transport.rs
index bd63930..465308d 100644
--- a/client/src/sync_probe/runner/bundled_transport.rs
+++ b/client/src/sync_probe/runner/bundled_transport.rs
@@ -5,8 +5,9 @@
 //! streaming `UpstreamMediaBundle` messages to the server.
 
 use anyhow::{Context, Result};
-use lesavka_common::lesavka::{
-    AudioPacket, UpstreamMediaBundle, VideoPacket, relay_client::RelayClient,
+use lesavka_common::{
+    audio_transport::{self, AudioTransportProfile, UpstreamAudioCodec},
+    lesavka::{AudioPacket, UpstreamMediaBundle, VideoPacket, relay_client::RelayClient},
 };
 use std::fs::File;
 use std::io::Write;
@@ -43,6 +44,7 @@ pub async fn run_bundled_probe_stream(
             .context("opening sync probe audio dump")?;
         let mut send_log = open_debug_dump("LESAVKA_SYNC_PROBE_SEND_LOG")
             .context("opening sync probe send log")?;
+        let mut audio_transport = ProbeAudioTransport::from_env();
         let outbound = async_stream::stream! {
             let mut pending_audio = Vec::<AudioPacket>::new();
             let mut audio_done = false;
@@ -79,6 +81,7 @@ pub async fn run_bundled_probe_stream(
                                 &mut pending_audio,
                                 &mut audio_done,
                                 &mut audio_seq,
+                                &mut audio_transport,
                                 audio_dump.as_mut(),
                                 probe_start,
                             ).await;
@@ -129,8 +132,10 @@ pub async fn run_bundled_probe_stream(
                                 next.queue_depth,
                                 probe_start,
                             );
-                            write_probe_audio_dump(audio_dump.as_mut(), &packet);
-                            pending_audio.push(packet);
+                            if let Some(packet) = audio_transport.encode_packet(packet) {
+                                write_probe_audio_dump(audio_dump.as_mut(), &packet);
+                                pending_audio.push(packet);
+                            }
                             retain_newest_probe_audio(&mut pending_audio);
                         } else if next.closed {
                             audio_done = true;
@@ -176,20 +181,26 @@ fn build_probe_bundle(
     capture_start_us: u64,
     capture_end_us: u64,
 ) -> UpstreamMediaBundle {
-    UpstreamMediaBundle {
+    let profile = audio
+        .first()
+        .map(audio_transport::packet_audio_profile)
+        .unwrap_or_else(AudioTransportProfile::pcm_s16le);
+    let mut bundle = UpstreamMediaBundle {
         session_id,
         seq,
         capture_start_us,
         capture_end_us,
         video,
         audio,
-        audio_sample_rate: 48_000,
-        audio_channels: 2,
-        audio_encoding: lesavka_common::lesavka::AudioEncoding::PcmS16le as i32,
+        audio_sample_rate: profile.sample_rate,
+        audio_channels: profile.channels,
+        audio_encoding: profile.encoding as i32,
         video_width: camera.width,
         video_height: camera.height,
         video_fps: camera.fps,
-    }
+    };
+    audio_transport::mark_bundle_audio_profile(&mut bundle, profile);
+    bundle
 }
 
 /// Drain one short audio grace window when a video packet arrives first.
@@ -204,6 +215,7 @@ async fn collect_probe_audio_grace(
     pending_audio: &mut Vec<AudioPacket>,
     audio_done: &mut bool,
     audio_seq: &mut u64,
+    audio_transport: &mut ProbeAudioTransport,
     audio_dump: Option<&mut File>,
     probe_start: Instant,
 ) {
@@ -216,14 +228,65 @@ async fn collect_probe_audio_grace(
     };
     if let Some(mut packet) = next.packet {
         stamp_probe_audio_packet(&mut packet, audio_seq, next.queue_depth, probe_start);
-        write_probe_audio_dump(audio_dump, &packet);
-        pending_audio.push(packet);
+        if let Some(packet) = audio_transport.encode_packet(packet) {
+            write_probe_audio_dump(audio_dump, &packet);
+            pending_audio.push(packet);
+        }
         retain_newest_probe_audio(pending_audio);
     } else if next.closed {
         *audio_done = true;
     }
 }
 
+/// Runtime audio transport for synthetic probe packets.
+///
+/// Inputs: `LESAVKA_UPLINK_AUDIO_CODEC` and installed GStreamer plugins.
+/// Outputs: packet bytes and metadata matching the selected upstream audio
+/// route. Why: the blind client->server->RCT test must exercise the same Opus
+/// compression path as the live microphone, not silently measure PCM.
+struct ProbeAudioTransport {
+    encoder: Option<crate::input::audio_codec::OpusPacketEncoder>,
+}
+
+impl ProbeAudioTransport {
+    fn from_env() -> Self {
+        match crate::input::audio_codec::requested_upstream_audio_codec_from_env() {
+            UpstreamAudioCodec::PcmS16le => Self { encoder: None },
+            UpstreamAudioCodec::Opus => match crate::input::audio_codec::OpusPacketEncoder::new() {
+                Ok(encoder) => {
+                    tracing::info!("🧪 sync probe Opus audio transport enabled");
+                    Self {
+                        encoder: Some(encoder),
+                    }
+                }
+                Err(err) => {
+                    tracing::warn!(
+                        "🧪⚠️ sync probe Opus requested but unavailable ({err:#}); falling back to PCM"
+                    );
+                    Self { encoder: None }
+                }
+            },
+        }
+    }
+
+    fn encode_packet(&mut self, mut packet: AudioPacket) -> Option<AudioPacket> {
+        audio_transport::mark_packet_pcm_s16le(&mut packet);
+        let Some(encoder) = self.encoder.as_mut() else {
+            return Some(packet);
+        };
+        match encoder.encode_packet(packet.clone()) {
+            Ok(Some(encoded)) => Some(encoded),
+            Ok(None) => None,
+            Err(err) => {
+                tracing::warn!(
+                    "🧪⚠️ sync probe Opus encode failed; sending PCM fallback for this packet: {err:#}"
+                );
+                Some(packet)
+            }
+        }
+    }
+}
+
 /// Stamp one synthetic audio packet with client-side transport telemetry.
 ///
 /// Inputs: mutable packet, sequence counter, queue depth, and probe clock.
diff --git a/client/src/sync_probe/runner/bundled_transport/tests.rs b/client/src/sync_probe/runner/bundled_transport/tests.rs
index c4270ba..f9b7a47 100644
--- a/client/src/sync_probe/runner/bundled_transport/tests.rs
+++ b/client/src/sync_probe/runner/bundled_transport/tests.rs
@@ -88,6 +88,59 @@ fn hevc_probe_bundle_preserves_paired_media_and_server_metadata() {
     );
 }
 
+#[test]
+/// Verifies the blind sync probe can describe compressed Opus audio bundles.
+///
+/// Inputs: one synthetic video packet plus a pre-compressed Opus-like audio
+/// packet. Outputs: assertions over bundle metadata. Why: the client-to-RCT
+/// hardware probe must not silently report PCM evidence when the operator asked
+/// to validate the Opus upstream route.
+fn probe_bundle_uses_opus_metadata_when_audio_packets_are_opus() {
+    let camera = CameraConfig {
+        codec: CameraCodec::Hevc,
+        width: 1280,
+        height: 720,
+        fps: 30,
+    };
+    let probe_start = Instant::now();
+    let mut video = VideoPacket {
+        pts: 1_000_000,
+        data: vec![0, 0, 0, 1, 0x26, 0xaa, 0xbb],
+        ..Default::default()
+    };
+    let mut video_seq = 0;
+    stamp_probe_video_packet(&mut video, &mut video_seq, 1, camera.fps, probe_start);
+
+    let mut audio = AudioPacket {
+        pts: 1_000_000,
+        data: vec![0x7f; 160],
+        frame_duration_us: 20_000,
+        ..Default::default()
+    };
+    lesavka_common::audio_transport::mark_packet_opus(&mut audio);
+    let mut audio_seq = 0;
+    stamp_probe_audio_packet(&mut audio, &mut audio_seq, 1, probe_start);
+
+    let bundle = build_probe_bundle(
+        PROBE_BUNDLE_SESSION_ID,
+        42,
+        &camera,
+        Some(video),
+        vec![audio],
+        1_000_000,
+        1_000_000,
+    );
+
+    assert_eq!(
+        bundle.audio_encoding,
+        lesavka_common::lesavka::AudioEncoding::Opus as i32
+    );
+    assert_eq!(bundle.audio_sample_rate, 48_000);
+    assert_eq!(bundle.audio_channels, 2);
+    assert_eq!(bundle.audio[0].frame_duration_us, 20_000);
+    assert_eq!(bundle.audio[0].data.len(), 160);
+}
+
 #[test]
 /// Verifies a synthetic HEVC event train leaves as paired A/V bundles.
 ///
diff --git a/client/src/sync_probe/timeline.rs b/client/src/sync_probe/timeline.rs
index 11f4b74..6838f3b 100644
--- a/client/src/sync_probe/timeline.rs
+++ b/client/src/sync_probe/timeline.rs
@@ -13,6 +13,10 @@ use std::time::Duration;
 use crate::input::camera::{CameraCodec, CameraConfig};
 use crate::sync_probe::schedule::PulseSchedule;
 
+const AUDIO_SAMPLE_RATE_HZ: u32 = 48_000;
+const AUDIO_CHANNEL_COUNT: u32 = 2;
+const AUDIO_CHUNK_MS: u32 = 20;
+
 #[derive(Debug, Serialize)]
 pub struct ProbeTimeline {
     schema: &'static str,
@@ -72,9 +76,9 @@ impl ProbeTimeline {
             camera_height: camera.height,
             camera_fps: camera.fps,
             camera_codec: codec_label(camera.codec),
-            audio_sample_rate: 48_000,
-            audio_channels: 2,
-            audio_chunk_ms: 10,
+            audio_sample_rate: AUDIO_SAMPLE_RATE_HZ,
+            audio_channels: AUDIO_CHANNEL_COUNT,
+            audio_chunk_ms: AUDIO_CHUNK_MS,
             warmup_us: micros(schedule.warmup_boundary()),
             duration_us: micros(duration),
             pulse_period_ms: millis(schedule.pulse_period()),
@@ -188,6 +192,9 @@ mod tests {
         );
         assert_eq!(timeline.warmup_us, 4_000_000);
         assert_eq!(timeline.camera_codec, "mjpeg");
+        assert_eq!(timeline.audio_sample_rate, 48_000);
+        assert_eq!(timeline.audio_channels, 2);
+        assert_eq!(timeline.audio_chunk_ms, 20);
         assert!(timeline.event_width_codes.is_empty());
         assert_eq!(timeline.events.len(), 4);
         assert_eq!(timeline.events[0].event_id, 0);
diff --git a/common/Cargo.toml b/common/Cargo.toml
index d60c002..9550958 100644
--- a/common/Cargo.toml
+++ b/common/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name                    = "lesavka_common"
-version                 = "0.22.17"
+version                 = "0.22.18"
 edition                 = "2024"
 build                   = "build.rs"
 
diff --git a/scripts/install/server.sh b/scripts/install/server.sh
index c9fd9de..a796e7a 100755
--- a/scripts/install/server.sh
+++ b/scripts/install/server.sh
@@ -72,18 +72,26 @@ DEFAULT_MJPEG_UPSTREAM_AUDIO_PLAYOUT_OFFSET_US=0
 DEFAULT_MJPEG_UPSTREAM_VIDEO_PLAYOUT_OFFSET_US=135090
 DEFAULT_MJPEG_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US=1280x720@20=0,1280x720@30=0,1920x1080@20=0,1920x1080@30=0
 DEFAULT_MJPEG_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US=1280x720@20=162659,1280x720@30=135090,1920x1080@20=160045,1920x1080@30=127952
+DEFAULT_MJPEG_OPUS_UPSTREAM_AUDIO_PLAYOUT_OFFSET_US=-34199
+DEFAULT_MJPEG_OPUS_UPSTREAM_VIDEO_PLAYOUT_OFFSET_US=513850
+DEFAULT_MJPEG_OPUS_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US=1280x720@20=-34199,1280x720@30=-34199,1920x1080@20=-34199,1920x1080@30=-34199
+DEFAULT_MJPEG_OPUS_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US=1280x720@20=541419,1280x720@30=513850,1920x1080@20=538805,1920x1080@30=506712
 DEFAULT_HEVC_UPSTREAM_AUDIO_PLAYOUT_OFFSET_US=0
 DEFAULT_HEVC_UPSTREAM_VIDEO_PLAYOUT_OFFSET_US=110000
 DEFAULT_HEVC_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US=1280x720@20=0,1280x720@30=0,1920x1080@20=0,1920x1080@30=0
 DEFAULT_HEVC_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US=1280x720@20=173852,1280x720@30=110000,1920x1080@20=160045,1920x1080@30=127952
 DEFAULT_MJPEG_PCM_UPSTREAM_AUDIO_PLAYOUT_OFFSET_US=$DEFAULT_MJPEG_UPSTREAM_AUDIO_PLAYOUT_OFFSET_US
 DEFAULT_MJPEG_PCM_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US=$DEFAULT_MJPEG_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US
+DEFAULT_MJPEG_PCM_UPSTREAM_VIDEO_PLAYOUT_OFFSET_US=$DEFAULT_MJPEG_UPSTREAM_VIDEO_PLAYOUT_OFFSET_US
+DEFAULT_MJPEG_PCM_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US=$DEFAULT_MJPEG_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US
 DEFAULT_HEVC_PCM_UPSTREAM_AUDIO_PLAYOUT_OFFSET_US=$DEFAULT_HEVC_UPSTREAM_AUDIO_PLAYOUT_OFFSET_US
 DEFAULT_HEVC_PCM_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US=$DEFAULT_HEVC_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US
-DEFAULT_MJPEG_OPUS_UPSTREAM_AUDIO_PLAYOUT_OFFSET_US=$DEFAULT_MJPEG_UPSTREAM_AUDIO_PLAYOUT_OFFSET_US
-DEFAULT_MJPEG_OPUS_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US=$DEFAULT_MJPEG_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US
+DEFAULT_HEVC_PCM_UPSTREAM_VIDEO_PLAYOUT_OFFSET_US=$DEFAULT_HEVC_UPSTREAM_VIDEO_PLAYOUT_OFFSET_US
+DEFAULT_HEVC_PCM_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US=$DEFAULT_HEVC_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US
 DEFAULT_HEVC_OPUS_UPSTREAM_AUDIO_PLAYOUT_OFFSET_US=$DEFAULT_HEVC_UPSTREAM_AUDIO_PLAYOUT_OFFSET_US
 DEFAULT_HEVC_OPUS_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US=$DEFAULT_HEVC_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US
+DEFAULT_HEVC_OPUS_UPSTREAM_VIDEO_PLAYOUT_OFFSET_US=$DEFAULT_HEVC_UPSTREAM_VIDEO_PLAYOUT_OFFSET_US
+DEFAULT_HEVC_OPUS_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US=$DEFAULT_HEVC_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US
 LEGACY_MJPEG_UPSTREAM_AUDIO_PLAYOUT_OFFSET_US=-45000
 PREVIOUS_MJPEG_UPSTREAM_AUDIO_PLAYOUT_OFFSET_US=720000
 PREVIOUS_TUNED_MJPEG_UPSTREAM_AUDIO_PLAYOUT_OFFSET_US=1260000
@@ -1516,12 +1524,20 @@ SERVER_ENV_TMP=$(mktemp)
   printf 'LESAVKA_UPSTREAM_HEVC_VIDEO_PLAYOUT_OFFSET_US=%s\n' "${LESAVKA_UPSTREAM_HEVC_VIDEO_PLAYOUT_OFFSET_US:-$DEFAULT_HEVC_UPSTREAM_VIDEO_PLAYOUT_OFFSET_US}"
   printf 'LESAVKA_UPSTREAM_MJPEG_PCM_AUDIO_PLAYOUT_MODE_OFFSETS_US=%s\n' "${LESAVKA_UPSTREAM_MJPEG_PCM_AUDIO_PLAYOUT_MODE_OFFSETS_US:-$DEFAULT_MJPEG_PCM_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US}"
   printf 'LESAVKA_UPSTREAM_MJPEG_PCM_AUDIO_PLAYOUT_OFFSET_US=%s\n' "${LESAVKA_UPSTREAM_MJPEG_PCM_AUDIO_PLAYOUT_OFFSET_US:-$DEFAULT_MJPEG_PCM_UPSTREAM_AUDIO_PLAYOUT_OFFSET_US}"
+  printf 'LESAVKA_UPSTREAM_MJPEG_PCM_VIDEO_PLAYOUT_MODE_OFFSETS_US=%s\n' "${LESAVKA_UPSTREAM_MJPEG_PCM_VIDEO_PLAYOUT_MODE_OFFSETS_US:-$DEFAULT_MJPEG_PCM_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US}"
+  printf 'LESAVKA_UPSTREAM_MJPEG_PCM_VIDEO_PLAYOUT_OFFSET_US=%s\n' "${LESAVKA_UPSTREAM_MJPEG_PCM_VIDEO_PLAYOUT_OFFSET_US:-$DEFAULT_MJPEG_PCM_UPSTREAM_VIDEO_PLAYOUT_OFFSET_US}"
   printf 'LESAVKA_UPSTREAM_HEVC_PCM_AUDIO_PLAYOUT_MODE_OFFSETS_US=%s\n' "${LESAVKA_UPSTREAM_HEVC_PCM_AUDIO_PLAYOUT_MODE_OFFSETS_US:-$DEFAULT_HEVC_PCM_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US}"
   printf 'LESAVKA_UPSTREAM_HEVC_PCM_AUDIO_PLAYOUT_OFFSET_US=%s\n' "${LESAVKA_UPSTREAM_HEVC_PCM_AUDIO_PLAYOUT_OFFSET_US:-$DEFAULT_HEVC_PCM_UPSTREAM_AUDIO_PLAYOUT_OFFSET_US}"
+  printf 'LESAVKA_UPSTREAM_HEVC_PCM_VIDEO_PLAYOUT_MODE_OFFSETS_US=%s\n' "${LESAVKA_UPSTREAM_HEVC_PCM_VIDEO_PLAYOUT_MODE_OFFSETS_US:-$DEFAULT_HEVC_PCM_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US}"
+  printf 'LESAVKA_UPSTREAM_HEVC_PCM_VIDEO_PLAYOUT_OFFSET_US=%s\n' "${LESAVKA_UPSTREAM_HEVC_PCM_VIDEO_PLAYOUT_OFFSET_US:-$DEFAULT_HEVC_PCM_UPSTREAM_VIDEO_PLAYOUT_OFFSET_US}"
   printf 'LESAVKA_UPSTREAM_MJPEG_OPUS_AUDIO_PLAYOUT_MODE_OFFSETS_US=%s\n' "${LESAVKA_UPSTREAM_MJPEG_OPUS_AUDIO_PLAYOUT_MODE_OFFSETS_US:-$DEFAULT_MJPEG_OPUS_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US}"
   printf 'LESAVKA_UPSTREAM_MJPEG_OPUS_AUDIO_PLAYOUT_OFFSET_US=%s\n' "${LESAVKA_UPSTREAM_MJPEG_OPUS_AUDIO_PLAYOUT_OFFSET_US:-$DEFAULT_MJPEG_OPUS_UPSTREAM_AUDIO_PLAYOUT_OFFSET_US}"
+  printf 'LESAVKA_UPSTREAM_MJPEG_OPUS_VIDEO_PLAYOUT_MODE_OFFSETS_US=%s\n' "${LESAVKA_UPSTREAM_MJPEG_OPUS_VIDEO_PLAYOUT_MODE_OFFSETS_US:-$DEFAULT_MJPEG_OPUS_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US}"
+  printf 'LESAVKA_UPSTREAM_MJPEG_OPUS_VIDEO_PLAYOUT_OFFSET_US=%s\n' "${LESAVKA_UPSTREAM_MJPEG_OPUS_VIDEO_PLAYOUT_OFFSET_US:-$DEFAULT_MJPEG_OPUS_UPSTREAM_VIDEO_PLAYOUT_OFFSET_US}"
   printf 'LESAVKA_UPSTREAM_HEVC_OPUS_AUDIO_PLAYOUT_MODE_OFFSETS_US=%s\n' "${LESAVKA_UPSTREAM_HEVC_OPUS_AUDIO_PLAYOUT_MODE_OFFSETS_US:-$DEFAULT_HEVC_OPUS_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US}"
   printf 'LESAVKA_UPSTREAM_HEVC_OPUS_AUDIO_PLAYOUT_OFFSET_US=%s\n' "${LESAVKA_UPSTREAM_HEVC_OPUS_AUDIO_PLAYOUT_OFFSET_US:-$DEFAULT_HEVC_OPUS_UPSTREAM_AUDIO_PLAYOUT_OFFSET_US}"
+  printf 'LESAVKA_UPSTREAM_HEVC_OPUS_VIDEO_PLAYOUT_MODE_OFFSETS_US=%s\n' "${LESAVKA_UPSTREAM_HEVC_OPUS_VIDEO_PLAYOUT_MODE_OFFSETS_US:-$DEFAULT_HEVC_OPUS_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US}"
+  printf 'LESAVKA_UPSTREAM_HEVC_OPUS_VIDEO_PLAYOUT_OFFSET_US=%s\n' "${LESAVKA_UPSTREAM_HEVC_OPUS_VIDEO_PLAYOUT_OFFSET_US:-$DEFAULT_HEVC_OPUS_UPSTREAM_VIDEO_PLAYOUT_OFFSET_US}"
   printf 'LESAVKA_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US=%s\n' "${LESAVKA_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US:-$DEFAULT_MJPEG_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US}"
   printf 'LESAVKA_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US=%s\n' "${LESAVKA_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US:-$DEFAULT_MJPEG_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US}"
   printf 'LESAVKA_UPSTREAM_AUDIO_PLAYOUT_OFFSET_US=%s\n' "$(resolve_upstream_audio_playout_offset_us)"
diff --git a/server/Cargo.toml b/server/Cargo.toml
index 4f0227f..87f60b1 100644
--- a/server/Cargo.toml
+++ b/server/Cargo.toml
@@ -10,7 +10,7 @@ bench                   = false
 
 [package]
 name                    = "lesavka_server"
-version                 = "0.22.17"
+version                 = "0.22.18"
 edition                 = "2024"
 autobins                = false
 
diff --git a/server/src/bin/lesavka-uvc.real.inc b/server/src/bin/lesavka-uvc.real.inc
index 9283ef0..0c90348 100644
--- a/server/src/bin/lesavka-uvc.real.inc
+++ b/server/src/bin/lesavka-uvc.real.inc
@@ -46,7 +46,8 @@ const V4L2_MEMORY_MMAP: u32 = 1;
 const V4L2_FIELD_NONE: u32 = 1;
 const V4L2_PIX_FMT_MJPEG: u32 = u32::from_le_bytes(*b"MJPG");
 const MAX_MJPEG_FRAME_BYTES: usize = 8 * 1024 * 1024;
-const EMPTY_MJPEG_FRAME: &[u8] = &[0xff, 0xd8, 0xff, 0xd9];
+const MINIMAL_MJPEG_FRAME: &[u8] = &[0xff, 0xd8, 0xff, 0xd9];
+const IDLE_MJPEG_FRAME: &[u8] = include_bytes!("lesavka_uvc/idle_1280x720_black.jpg");
 const DEFAULT_UVC_BUFFER_COUNT: u32 = 2;
 const DEFAULT_UVC_IDLE_PUMP_MS: u64 = 2;
 const DEFAULT_UVC_FRAME_MAX_AGE_MS: u64 = 1_000;
@@ -250,7 +251,7 @@ impl UvcVideoStream {
             fd,
             buffers: Vec::new(),
             frame_path: frame_spool_path(),
-            latest_frame: EMPTY_MJPEG_FRAME.to_vec(),
+            latest_frame: IDLE_MJPEG_FRAME.to_vec(),
             frame_max_bytes: MAX_MJPEG_FRAME_BYTES,
             streaming: false,
         }
@@ -445,7 +446,7 @@ impl UvcVideoStream {
         {
             self.latest_frame = frame;
         } else if !looks_like_mjpeg_frame(&self.latest_frame) {
-            self.latest_frame = EMPTY_MJPEG_FRAME.to_vec();
+            self.latest_frame = IDLE_MJPEG_FRAME.to_vec();
         }
     }
 
@@ -461,8 +462,10 @@ impl UvcVideoStream {
     fn frame_for_buffer(&self, buffer_len: usize) -> &[u8] {
         if self.latest_frame.len() <= buffer_len && looks_like_mjpeg_frame(&self.latest_frame) {
             &self.latest_frame
+        } else if IDLE_MJPEG_FRAME.len() <= buffer_len {
+            IDLE_MJPEG_FRAME
         } else {
-            EMPTY_MJPEG_FRAME
+            MINIMAL_MJPEG_FRAME
         }
     }
 }
@@ -509,7 +512,7 @@ fn frame_spool_path() -> std::path::PathBuf {
 }
 
 fn looks_like_mjpeg_frame(frame: &[u8]) -> bool {
-    frame.len() > EMPTY_MJPEG_FRAME.len()
+    frame.len() > MINIMAL_MJPEG_FRAME.len()
         && frame.starts_with(&[0xff, 0xd8])
         && frame.ends_with(&[0xff, 0xd9])
 }
diff --git a/server/src/bin/lesavka_uvc/coverage_model.rs b/server/src/bin/lesavka_uvc/coverage_model.rs
index e54465d..32d422e 100644
--- a/server/src/bin/lesavka_uvc/coverage_model.rs
+++ b/server/src/bin/lesavka_uvc/coverage_model.rs
@@ -58,7 +58,9 @@ const DEFAULT_UVC_MJPEG_BUDGET_BYTES_PER_SEC: u32 = 10_000_000;
 #[cfg(coverage)]
 const MAX_MJPEG_FRAME_BYTES: usize = 8 * 1024 * 1024;
 #[cfg(coverage)]
-const EMPTY_MJPEG_FRAME: &[u8] = &[0xff, 0xd8, 0xff, 0xd9];
+const MINIMAL_MJPEG_FRAME: &[u8] = &[0xff, 0xd8, 0xff, 0xd9];
+#[cfg(coverage)]
+const IDLE_MJPEG_FRAME: &[u8] = include_bytes!("idle_1280x720_black.jpg");
 
 #[cfg(coverage)]
 #[repr(C)]
@@ -162,7 +164,7 @@ impl UvcVideoStream {
         Self {
             buffers: Vec::new(),
             frame_path: frame_spool_path(),
-            latest_frame: EMPTY_MJPEG_FRAME.to_vec(),
+            latest_frame: IDLE_MJPEG_FRAME.to_vec(),
             frame_max_bytes: MAX_MJPEG_FRAME_BYTES,
         }
     }
@@ -179,7 +181,7 @@ impl UvcVideoStream {
         {
             self.latest_frame = frame;
         } else if !looks_like_mjpeg_frame(&self.latest_frame) {
-            self.latest_frame = EMPTY_MJPEG_FRAME.to_vec();
+            self.latest_frame = IDLE_MJPEG_FRAME.to_vec();
         }
     }
 
@@ -195,8 +197,10 @@ impl UvcVideoStream {
     fn frame_for_buffer(&self, buffer_len: usize) -> &[u8] {
         if self.latest_frame.len() <= buffer_len && looks_like_mjpeg_frame(&self.latest_frame) {
             &self.latest_frame
+        } else if IDLE_MJPEG_FRAME.len() <= buffer_len {
+            IDLE_MJPEG_FRAME
         } else {
-            EMPTY_MJPEG_FRAME
+            MINIMAL_MJPEG_FRAME
         }
     }
 }
@@ -210,7 +214,7 @@ fn frame_spool_path() -> std::path::PathBuf {
 
 #[cfg(coverage)]
 fn looks_like_mjpeg_frame(frame: &[u8]) -> bool {
-    frame.len() > EMPTY_MJPEG_FRAME.len()
+    frame.len() > MINIMAL_MJPEG_FRAME.len()
         && frame.starts_with(&[0xff, 0xd8])
         && frame.ends_with(&[0xff, 0xd9])
 }
diff --git a/server/src/bin/lesavka_uvc/idle_1280x720_black.jpg b/server/src/bin/lesavka_uvc/idle_1280x720_black.jpg
new file mode 100644
index 0000000..7c497ce
Binary files /dev/null and b/server/src/bin/lesavka_uvc/idle_1280x720_black.jpg differ
diff --git a/server/src/calibration.rs b/server/src/calibration.rs
index 5374672..558c500 100644
--- a/server/src/calibration.rs
+++ b/server/src/calibration.rs
@@ -16,13 +16,20 @@ use mode_env::{current_uvc_mode, lookup_mode_offset_us};
 pub use profile_offsets::{
     FACTORY_HEVC_AUDIO_MODE_OFFSETS_US, FACTORY_HEVC_AUDIO_OFFSET_US,
     FACTORY_HEVC_OPUS_AUDIO_MODE_OFFSETS_US, FACTORY_HEVC_OPUS_AUDIO_OFFSET_US,
+    FACTORY_HEVC_OPUS_VIDEO_MODE_OFFSETS_US, FACTORY_HEVC_OPUS_VIDEO_OFFSET_US,
     FACTORY_HEVC_PCM_AUDIO_MODE_OFFSETS_US, FACTORY_HEVC_PCM_AUDIO_OFFSET_US,
+    FACTORY_HEVC_PCM_VIDEO_MODE_OFFSETS_US, FACTORY_HEVC_PCM_VIDEO_OFFSET_US,
     FACTORY_HEVC_VIDEO_MODE_OFFSETS_US, FACTORY_HEVC_VIDEO_OFFSET_1280X720_20_US,
     FACTORY_HEVC_VIDEO_OFFSET_1280X720_30_US, FACTORY_HEVC_VIDEO_OFFSET_1920X1080_20_US,
     FACTORY_HEVC_VIDEO_OFFSET_1920X1080_30_US, FACTORY_HEVC_VIDEO_OFFSET_US,
     FACTORY_MJPEG_AUDIO_MODE_OFFSETS_US, FACTORY_MJPEG_AUDIO_OFFSET_US,
     FACTORY_MJPEG_OPUS_AUDIO_MODE_OFFSETS_US, FACTORY_MJPEG_OPUS_AUDIO_OFFSET_US,
+    FACTORY_MJPEG_OPUS_VIDEO_MODE_OFFSETS_US, FACTORY_MJPEG_OPUS_VIDEO_OFFSET_1280X720_20_US,
+    FACTORY_MJPEG_OPUS_VIDEO_OFFSET_1280X720_30_US,
+    FACTORY_MJPEG_OPUS_VIDEO_OFFSET_1920X1080_20_US,
+    FACTORY_MJPEG_OPUS_VIDEO_OFFSET_1920X1080_30_US, FACTORY_MJPEG_OPUS_VIDEO_OFFSET_US,
     FACTORY_MJPEG_PCM_AUDIO_MODE_OFFSETS_US, FACTORY_MJPEG_PCM_AUDIO_OFFSET_US,
+    FACTORY_MJPEG_PCM_VIDEO_MODE_OFFSETS_US, FACTORY_MJPEG_PCM_VIDEO_OFFSET_US,
     FACTORY_MJPEG_VIDEO_MODE_OFFSETS_US, FACTORY_MJPEG_VIDEO_OFFSET_1280X720_20_US,
     FACTORY_MJPEG_VIDEO_OFFSET_1280X720_30_US, FACTORY_MJPEG_VIDEO_OFFSET_1920X1080_20_US,
     FACTORY_MJPEG_VIDEO_OFFSET_1920X1080_30_US, FACTORY_MJPEG_VIDEO_OFFSET_US,
@@ -30,6 +37,7 @@ pub use profile_offsets::{
 use profile_offsets::{
     configured_profile_offset_us, current_profile, factory_audio_mode_offsets_us,
     factory_audio_scalar_offset_us, factory_video_mode_offsets_us, factory_video_scalar_offset_us,
+    normalize_calibration_profile,
 };
 
 const LEGACY_FACTORY_MJPEG_AUDIO_OFFSET_US: i64 = -45_000;
@@ -358,24 +366,25 @@ fn parse_snapshot(raw: &str) -> CalibrationSnapshot {
 /// Inputs are the typed parameters; output is the return value or side effect.
 fn migrate_legacy_snapshot(mut state: CalibrationSnapshot) -> CalibrationSnapshot {
     let current_profile = current_profile();
+    let stored_profile = normalize_calibration_profile(&state.profile);
     let source_allows_migration = matches!(state.source.as_str(), "factory" | "env");
     let confidence_allows_migration = matches!(state.confidence.as_str(), "factory" | "configured");
     let detail_allows_profile_migration = state
         .detail
         .contains("loaded upstream A/V calibration defaults")
         || state.detail.contains("restored release-shipped");
-    if state.profile != current_profile
+    if stored_profile != current_profile
         && source_allows_migration
         && confidence_allows_migration
         && detail_allows_profile_migration
     {
         let mut replacement = factory_snapshot_from_env(format!(
             "migrated factory upstream A/V calibration profile from {} to {}",
-            state.profile, current_profile
+            stored_profile, current_profile
         ));
         replacement.detail = format!(
             "migrated factory upstream A/V calibration profile from {} to {}",
-            state.profile, replacement.profile
+            stored_profile, replacement.profile
         );
         return replacement;
     }
@@ -391,7 +400,7 @@ fn migrate_legacy_snapshot(mut state: CalibrationSnapshot) -> CalibrationSnapsho
         && state.active_audio_offset_us == state.default_audio_offset_us;
     let untouched_legacy_video = is_stale_video_offset_us(state.default_video_offset_us)
         && state.active_video_offset_us == state.default_video_offset_us;
-    if state.profile == current_profile
+    if stored_profile == current_profile
         && source_allows_migration
         && confidence_allows_migration
         && untouched_legacy_audio
@@ -403,6 +412,7 @@ fn migrate_legacy_snapshot(mut state: CalibrationSnapshot) -> CalibrationSnapsho
         state.active_audio_offset_us = state.factory_audio_offset_us;
         state.default_video_offset_us = state.factory_video_offset_us;
         state.active_video_offset_us = state.factory_video_offset_us;
+        state.profile = current_profile;
         state.source = "factory".to_string();
         state.confidence = FACTORY_CONFIDENCE.to_string();
         state.detail = format!(
diff --git a/server/src/calibration/profile_offsets.rs b/server/src/calibration/profile_offsets.rs
index a5baee7..534ec18 100644
--- a/server/src/calibration/profile_offsets.rs
+++ b/server/src/calibration/profile_offsets.rs
@@ -3,10 +3,22 @@ pub const FACTORY_MJPEG_VIDEO_OFFSET_1280X720_20_US: i64 = 162_659;
 pub const FACTORY_MJPEG_VIDEO_OFFSET_1280X720_30_US: i64 = 135_090;
 pub const FACTORY_MJPEG_VIDEO_OFFSET_1920X1080_20_US: i64 = 160_045;
 pub const FACTORY_MJPEG_VIDEO_OFFSET_1920X1080_30_US: i64 = 127_952;
+pub const FACTORY_MJPEG_OPUS_AUDIO_OFFSET_US: i64 = -34_199;
+pub const FACTORY_MJPEG_OPUS_VIDEO_OFFSET_1280X720_20_US: i64 = 541_419;
+pub const FACTORY_MJPEG_OPUS_VIDEO_OFFSET_1280X720_30_US: i64 = 513_850;
+pub const FACTORY_MJPEG_OPUS_VIDEO_OFFSET_1920X1080_20_US: i64 = 538_805;
+pub const FACTORY_MJPEG_OPUS_VIDEO_OFFSET_1920X1080_30_US: i64 = 506_712;
 pub const FACTORY_MJPEG_AUDIO_MODE_OFFSETS_US: &str =
     "1280x720@20=0,1280x720@30=0,1920x1080@20=0,1920x1080@30=0";
 pub const FACTORY_MJPEG_VIDEO_MODE_OFFSETS_US: &str =
     "1280x720@20=162659,1280x720@30=135090,1920x1080@20=160045,1920x1080@30=127952";
+pub const FACTORY_MJPEG_OPUS_AUDIO_MODE_OFFSETS_US: &str =
+    "1280x720@20=-34199,1280x720@30=-34199,1920x1080@20=-34199,1920x1080@30=-34199";
+// 1280x720@30 was measured through the blind client->server->RCT Opus path.
+// The sibling MJPEG modes carry the same Opus-vs-PCM video delta until the next
+// full mode matrix replaces them with direct hardware measurements.
+pub const FACTORY_MJPEG_OPUS_VIDEO_MODE_OFFSETS_US: &str =
+    "1280x720@20=541419,1280x720@30=513850,1920x1080@20=538805,1920x1080@30=506712";
 pub const FACTORY_HEVC_AUDIO_OFFSET_US: i64 = 0;
 pub const FACTORY_HEVC_VIDEO_OFFSET_1280X720_20_US: i64 = 173_852;
 pub const FACTORY_HEVC_VIDEO_OFFSET_1280X720_30_US: i64 = 110_000;
@@ -18,12 +30,17 @@ pub const FACTORY_HEVC_VIDEO_MODE_OFFSETS_US: &str =
     "1280x720@20=173852,1280x720@30=110000,1920x1080@20=160045,1920x1080@30=127952";
 pub const FACTORY_MJPEG_PCM_AUDIO_MODE_OFFSETS_US: &str = FACTORY_MJPEG_AUDIO_MODE_OFFSETS_US;
 pub const FACTORY_HEVC_PCM_AUDIO_MODE_OFFSETS_US: &str = FACTORY_HEVC_AUDIO_MODE_OFFSETS_US;
-pub const FACTORY_MJPEG_OPUS_AUDIO_MODE_OFFSETS_US: &str = FACTORY_MJPEG_AUDIO_MODE_OFFSETS_US;
 pub const FACTORY_HEVC_OPUS_AUDIO_MODE_OFFSETS_US: &str = FACTORY_HEVC_AUDIO_MODE_OFFSETS_US;
+pub const FACTORY_MJPEG_PCM_VIDEO_MODE_OFFSETS_US: &str = FACTORY_MJPEG_VIDEO_MODE_OFFSETS_US;
+pub const FACTORY_HEVC_PCM_VIDEO_MODE_OFFSETS_US: &str = FACTORY_HEVC_VIDEO_MODE_OFFSETS_US;
+pub const FACTORY_HEVC_OPUS_VIDEO_MODE_OFFSETS_US: &str = FACTORY_HEVC_VIDEO_MODE_OFFSETS_US;
 pub const FACTORY_MJPEG_PCM_AUDIO_OFFSET_US: i64 = FACTORY_MJPEG_AUDIO_OFFSET_US;
 pub const FACTORY_HEVC_PCM_AUDIO_OFFSET_US: i64 = FACTORY_HEVC_AUDIO_OFFSET_US;
-pub const FACTORY_MJPEG_OPUS_AUDIO_OFFSET_US: i64 = FACTORY_MJPEG_AUDIO_OFFSET_US;
 pub const FACTORY_HEVC_OPUS_AUDIO_OFFSET_US: i64 = FACTORY_HEVC_AUDIO_OFFSET_US;
+pub const FACTORY_MJPEG_PCM_VIDEO_OFFSET_US: i64 = FACTORY_MJPEG_VIDEO_OFFSET_US;
+pub const FACTORY_HEVC_PCM_VIDEO_OFFSET_US: i64 = FACTORY_HEVC_VIDEO_OFFSET_US;
+pub const FACTORY_MJPEG_OPUS_VIDEO_OFFSET_US: i64 = FACTORY_MJPEG_OPUS_VIDEO_OFFSET_1280X720_30_US;
+pub const FACTORY_HEVC_OPUS_VIDEO_OFFSET_US: i64 = FACTORY_HEVC_VIDEO_OFFSET_US;
 // Direct UVC/UAC output-delay probes against the lab RC target showed a
 // per-mode sync center for MJPEG/UVC video. This is output-path compensation,
 // not a freshness buffer. The scalar fallback follows the default UVC mode.
@@ -103,6 +120,15 @@ pub(super) fn current_profile() -> String {
     format!("{camera_profile}+{audio_profile}")
 }
 
+/// Normalize a persisted calibration profile into the current `camera+audio`
+/// shape. Why: pre-Opus snapshots stored only `mjpeg` or `hevc`, and those
+/// should compare as the PCM profiles they always represented.
+pub(super) fn normalize_calibration_profile(value: &str) -> String {
+    let camera_profile = camera_profile_from_calibration_profile(value);
+    let audio_profile = audio_profile_from_calibration_profile(value);
+    format!("{camera_profile}+{audio_profile}")
+}
+
 /// Resolve the camera side of the active calibration profile.
 ///
 /// Inputs: process environment. Output: `mjpeg` or `hevc`. Why: the camera
@@ -227,9 +253,13 @@ pub(super) fn factory_audio_mode_offsets_us(profile: &str) -> &'static str {
 /// where HEVC decode and MJPEG re-emission can shift sync, so each ingress
 /// profile needs its own baked server-to-RCT center points.
 pub(super) fn factory_video_mode_offsets_us(profile: &str) -> &'static str {
-    match camera_profile_from_calibration_profile(profile).as_str() {
-        HEVC_PROFILE => FACTORY_HEVC_VIDEO_MODE_OFFSETS_US,
-        _ => FACTORY_MJPEG_VIDEO_MODE_OFFSETS_US,
+    let camera = camera_profile_from_calibration_profile(profile);
+    let audio = audio_profile_from_calibration_profile(profile);
+    match (camera.as_str(), audio.as_str()) {
+        (HEVC_PROFILE, OPUS_AUDIO_PROFILE) => FACTORY_HEVC_OPUS_VIDEO_MODE_OFFSETS_US,
+        (HEVC_PROFILE, _) => FACTORY_HEVC_PCM_VIDEO_MODE_OFFSETS_US,
+        (MJPEG_PROFILE, OPUS_AUDIO_PROFILE) => FACTORY_MJPEG_OPUS_VIDEO_MODE_OFFSETS_US,
+        _ => FACTORY_MJPEG_PCM_VIDEO_MODE_OFFSETS_US,
     }
 }
 
@@ -256,8 +286,12 @@ pub(super) fn factory_audio_scalar_offset_us(profile: &str) -> i64 {
 /// most common calibrated profile instead of silently borrowing stale MJPEG
 /// values for HEVC.
 pub(super) fn factory_video_scalar_offset_us(profile: &str) -> i64 {
-    match camera_profile_from_calibration_profile(profile).as_str() {
-        HEVC_PROFILE => FACTORY_HEVC_VIDEO_OFFSET_US,
-        _ => FACTORY_MJPEG_VIDEO_OFFSET_US,
+    let camera = camera_profile_from_calibration_profile(profile);
+    let audio = audio_profile_from_calibration_profile(profile);
+    match (camera.as_str(), audio.as_str()) {
+        (HEVC_PROFILE, OPUS_AUDIO_PROFILE) => FACTORY_HEVC_OPUS_VIDEO_OFFSET_US,
+        (HEVC_PROFILE, _) => FACTORY_HEVC_PCM_VIDEO_OFFSET_US,
+        (MJPEG_PROFILE, OPUS_AUDIO_PROFILE) => FACTORY_MJPEG_OPUS_VIDEO_OFFSET_US,
+        _ => FACTORY_MJPEG_PCM_VIDEO_OFFSET_US,
     }
 }
diff --git a/server/src/calibration/tests/mod.rs b/server/src/calibration/tests/mod.rs
index 87bd0dc..599ed6b 100644
--- a/server/src/calibration/tests/mod.rs
+++ b/server/src/calibration/tests/mod.rs
@@ -46,6 +46,14 @@ fn with_clean_offset_env(test: impl FnOnce()) {
                 "LESAVKA_UPSTREAM_MJPEG_OPUS_AUDIO_PLAYOUT_MODE_OFFSETS_US",
                 None::<&str>,
             ),
+            (
+                "LESAVKA_UPSTREAM_MJPEG_OPUS_VIDEO_PLAYOUT_MODE_OFFSETS_US",
+                None::<&str>,
+            ),
+            (
+                "LESAVKA_UPSTREAM_MJPEG_OPUS_VIDEO_PLAYOUT_OFFSET_US",
+                None::<&str>,
+            ),
             (
                 "LESAVKA_UPSTREAM_HEVC_PCM_AUDIO_PLAYOUT_MODE_OFFSETS_US",
                 None::<&str>,
@@ -54,6 +62,14 @@ fn with_clean_offset_env(test: impl FnOnce()) {
                 "LESAVKA_UPSTREAM_HEVC_OPUS_AUDIO_PLAYOUT_MODE_OFFSETS_US",
                 None::<&str>,
             ),
+            (
+                "LESAVKA_UPSTREAM_HEVC_OPUS_VIDEO_PLAYOUT_MODE_OFFSETS_US",
+                None::<&str>,
+            ),
+            (
+                "LESAVKA_UPSTREAM_HEVC_OPUS_VIDEO_PLAYOUT_OFFSET_US",
+                None::<&str>,
+            ),
             (
                 "LESAVKA_UPSTREAM_HEVC_OPUS_AUDIO_PLAYOUT_OFFSET_US",
                 None::<&str>,
@@ -253,6 +269,29 @@ fn opus_audio_profile_gets_its_own_factory_and_env_namespace() {
     });
 }
 
+#[test]
+fn mjpeg_opus_profile_uses_blind_client_rct_factory_offsets() {
+    with_clean_offset_env(|| {
+        temp_env::with_vars(
+            [
+                ("LESAVKA_UPLINK_CAMERA_CODEC", Some("mjpeg")),
+                ("LESAVKA_UPLINK_AUDIO_CODEC", Some("opus")),
+                ("LESAVKA_UVC_WIDTH", Some("1280")),
+                ("LESAVKA_UVC_HEIGHT", Some("720")),
+                ("LESAVKA_UVC_FPS", Some("30")),
+            ],
+            || {
+                let state = snapshot_from_env();
+                assert_eq!(state.profile, "mjpeg+opus");
+                assert_eq!(state.factory_audio_offset_us, -34_199);
+                assert_eq!(state.factory_video_offset_us, 513_850);
+                assert_eq!(state.default_audio_offset_us, -34_199);
+                assert_eq!(state.default_video_offset_us, 513_850);
+            },
+        );
+    });
+}
+
 #[test]
 fn opus_audio_profile_specific_map_does_not_overwrite_pcm_baseline() {
     with_clean_offset_env(|| {
@@ -546,20 +585,22 @@ fn load_migrates_untouched_legacy_factory_mjpeg_baseline() {
     )
     .expect("legacy calibration seed");
     let path = file.path().to_string_lossy().to_string();
-    temp_env::with_var("LESAVKA_CALIBRATION_PATH", Some(path.as_str()), || {
-        let runtime = Arc::new(UpstreamMediaRuntime::new());
-        let store = CalibrationStore::load(runtime.clone());
-        let state = store.current();
-        assert_eq!(state.active_audio_offset_us, 0);
-        assert_eq!(state.default_audio_offset_us, 0);
-        assert_eq!(state.active_video_offset_us, FACTORY_MJPEG_VIDEO_OFFSET_US);
-        assert_eq!(state.default_video_offset_us, FACTORY_MJPEG_VIDEO_OFFSET_US);
-        assert_eq!(state.source, "factory");
-        assert_eq!(
-            runtime.playout_offsets(),
-            (FACTORY_MJPEG_VIDEO_OFFSET_US, 0)
-        );
-        assert!(state.detail.contains("migrated legacy MJPEG"));
+    with_clean_offset_env(|| {
+        temp_env::with_var("LESAVKA_CALIBRATION_PATH", Some(path.as_str()), || {
+            let runtime = Arc::new(UpstreamMediaRuntime::new());
+            let store = CalibrationStore::load(runtime.clone());
+            let state = store.current();
+            assert_eq!(state.active_audio_offset_us, 0);
+            assert_eq!(state.default_audio_offset_us, 0);
+            assert_eq!(state.active_video_offset_us, FACTORY_MJPEG_VIDEO_OFFSET_US);
+            assert_eq!(state.default_video_offset_us, FACTORY_MJPEG_VIDEO_OFFSET_US);
+            assert_eq!(state.source, "factory");
+            assert_eq!(
+                runtime.playout_offsets(),
+                (FACTORY_MJPEG_VIDEO_OFFSET_US, 0)
+            );
+            assert!(state.detail.contains("migrated legacy MJPEG"));
+        });
     });
 }
 
@@ -583,20 +624,22 @@ fn load_migrates_untouched_previous_factory_mjpeg_baseline() {
     )
     .expect("previous calibration seed");
     let path = file.path().to_string_lossy().to_string();
-    temp_env::with_var("LESAVKA_CALIBRATION_PATH", Some(path.as_str()), || {
-        let runtime = Arc::new(UpstreamMediaRuntime::new());
-        let store = CalibrationStore::load(runtime.clone());
-        let state = store.current();
-        assert_eq!(state.active_audio_offset_us, 0);
-        assert_eq!(state.default_audio_offset_us, 0);
-        assert_eq!(state.active_video_offset_us, FACTORY_MJPEG_VIDEO_OFFSET_US);
-        assert_eq!(state.default_video_offset_us, FACTORY_MJPEG_VIDEO_OFFSET_US);
-        assert_eq!(state.source, "factory");
-        assert_eq!(
-            runtime.playout_offsets(),
-            (FACTORY_MJPEG_VIDEO_OFFSET_US, 0)
-        );
-        assert!(state.detail.contains("to audio +0.0ms/video +135.1ms"));
+    with_clean_offset_env(|| {
+        temp_env::with_var("LESAVKA_CALIBRATION_PATH", Some(path.as_str()), || {
+            let runtime = Arc::new(UpstreamMediaRuntime::new());
+            let store = CalibrationStore::load(runtime.clone());
+            let state = store.current();
+            assert_eq!(state.active_audio_offset_us, 0);
+            assert_eq!(state.default_audio_offset_us, 0);
+            assert_eq!(state.active_video_offset_us, FACTORY_MJPEG_VIDEO_OFFSET_US);
+            assert_eq!(state.default_video_offset_us, FACTORY_MJPEG_VIDEO_OFFSET_US);
+            assert_eq!(state.source, "factory");
+            assert_eq!(
+                runtime.playout_offsets(),
+                (FACTORY_MJPEG_VIDEO_OFFSET_US, 0)
+            );
+            assert!(state.detail.contains("to audio +0.0ms/video +135.1ms"));
+        });
     });
 }
 
@@ -620,20 +663,22 @@ fn load_migrates_overshot_video_factory_mjpeg_baseline() {
     )
     .expect("overshot video calibration seed");
     let path = file.path().to_string_lossy().to_string();
-    temp_env::with_var("LESAVKA_CALIBRATION_PATH", Some(path.as_str()), || {
-        let runtime = Arc::new(UpstreamMediaRuntime::new());
-        let store = CalibrationStore::load(runtime.clone());
-        let state = store.current();
-        assert_eq!(state.active_audio_offset_us, 0);
-        assert_eq!(state.default_audio_offset_us, 0);
-        assert_eq!(state.active_video_offset_us, FACTORY_MJPEG_VIDEO_OFFSET_US);
-        assert_eq!(state.default_video_offset_us, FACTORY_MJPEG_VIDEO_OFFSET_US);
-        assert_eq!(state.source, "factory");
-        assert_eq!(
-            runtime.playout_offsets(),
-            (FACTORY_MJPEG_VIDEO_OFFSET_US, 0)
-        );
-        assert!(state.detail.contains("from audio +0.0ms/video +1090.0ms"));
+    with_clean_offset_env(|| {
+        temp_env::with_var("LESAVKA_CALIBRATION_PATH", Some(path.as_str()), || {
+            let runtime = Arc::new(UpstreamMediaRuntime::new());
+            let store = CalibrationStore::load(runtime.clone());
+            let state = store.current();
+            assert_eq!(state.active_audio_offset_us, 0);
+            assert_eq!(state.default_audio_offset_us, 0);
+            assert_eq!(state.active_video_offset_us, FACTORY_MJPEG_VIDEO_OFFSET_US);
+            assert_eq!(state.default_video_offset_us, FACTORY_MJPEG_VIDEO_OFFSET_US);
+            assert_eq!(state.source, "factory");
+            assert_eq!(
+                runtime.playout_offsets(),
+                (FACTORY_MJPEG_VIDEO_OFFSET_US, 0)
+            );
+            assert!(state.detail.contains("from audio +0.0ms/video +1090.0ms"));
+        });
     });
 }
 
diff --git a/server/src/upstream_media_runtime/tests/mod.rs b/server/src/upstream_media_runtime/tests/mod.rs
index 5732cca..e183579 100644
--- a/server/src/upstream_media_runtime/tests/mod.rs
+++ b/server/src/upstream_media_runtime/tests/mod.rs
@@ -28,6 +28,18 @@ fn with_clean_offset_env(test: impl FnOnce()) {
                 "LESAVKA_UPSTREAM_HEVC_OPUS_AUDIO_PLAYOUT_MODE_OFFSETS_US",
                 None::<&str>,
             ),
+            (
+                "LESAVKA_UPSTREAM_MJPEG_OPUS_AUDIO_PLAYOUT_MODE_OFFSETS_US",
+                None::<&str>,
+            ),
+            (
+                "LESAVKA_UPSTREAM_MJPEG_OPUS_VIDEO_PLAYOUT_MODE_OFFSETS_US",
+                None::<&str>,
+            ),
+            (
+                "LESAVKA_UPSTREAM_MJPEG_OPUS_VIDEO_PLAYOUT_OFFSET_US",
+                None::<&str>,
+            ),
         ],
         test,
     );
@@ -110,6 +122,25 @@ fn runtime_can_start_with_opus_specific_audio_calibration_profile() {
     });
 }
 
+#[test]
+fn runtime_starts_mjpeg_opus_with_blind_client_rct_offsets() {
+    with_clean_offset_env(|| {
+        temp_env::with_vars(
+            [
+                ("LESAVKA_UVC_WIDTH", Some("1280")),
+                ("LESAVKA_UVC_HEIGHT", Some("720")),
+                ("LESAVKA_UVC_FPS", Some("30")),
+                ("LESAVKA_UPLINK_CAMERA_CODEC", Some("mjpeg")),
+                ("LESAVKA_UPLINK_AUDIO_CODEC", Some("opus")),
+            ],
+            || {
+                let runtime = UpstreamMediaRuntime::new();
+                assert_eq!(runtime.playout_offsets(), (513_850, -34_199));
+            },
+        );
+    });
+}
+
 #[test]
 /// Keeps `runtime_records_client_and_sink_timing_for_upstream_snapshots` explicit because the blind client-to-RCT probe depends on this telemetry to explain freshness losses.
 /// Inputs are paired camera/microphone timing samples plus sink handoff marks; output is a live snapshot with skew, queue, late, and freeze fields populated.
diff --git a/tests/compatibility/server/video/hevc_mjpeg_profile_matrix_contract.rs b/tests/compatibility/server/video/hevc_mjpeg_profile_matrix_contract.rs
index 7765374..a701d54 100644
--- a/tests/compatibility/server/video/hevc_mjpeg_profile_matrix_contract.rs
+++ b/tests/compatibility/server/video/hevc_mjpeg_profile_matrix_contract.rs
@@ -9,8 +9,10 @@
 
 use lesavka_server::calibration::{
     FACTORY_HEVC_AUDIO_MODE_OFFSETS_US, FACTORY_HEVC_OPUS_AUDIO_MODE_OFFSETS_US,
-    FACTORY_HEVC_VIDEO_MODE_OFFSETS_US, FACTORY_MJPEG_AUDIO_MODE_OFFSETS_US,
-    FACTORY_MJPEG_PCM_AUDIO_MODE_OFFSETS_US, FACTORY_MJPEG_VIDEO_MODE_OFFSETS_US,
+    FACTORY_HEVC_OPUS_VIDEO_MODE_OFFSETS_US, FACTORY_HEVC_VIDEO_MODE_OFFSETS_US,
+    FACTORY_MJPEG_AUDIO_MODE_OFFSETS_US, FACTORY_MJPEG_OPUS_AUDIO_MODE_OFFSETS_US,
+    FACTORY_MJPEG_OPUS_VIDEO_MODE_OFFSETS_US, FACTORY_MJPEG_PCM_AUDIO_MODE_OFFSETS_US,
+    FACTORY_MJPEG_VIDEO_MODE_OFFSETS_US,
 };
 
 const MATRIX_SCRIPT: &str = include_str!(concat!(
@@ -30,8 +32,20 @@ fn hevc_and_mjpeg_factory_maps_cover_all_supported_uvc_modes() {
     for mode in SUPPORTED_MODES {
         assert!(map_contains_mode(FACTORY_MJPEG_AUDIO_MODE_OFFSETS_US, mode));
         assert!(map_contains_mode(FACTORY_MJPEG_VIDEO_MODE_OFFSETS_US, mode));
+        assert!(map_contains_mode(
+            FACTORY_MJPEG_OPUS_AUDIO_MODE_OFFSETS_US,
+            mode
+        ));
+        assert!(map_contains_mode(
+            FACTORY_MJPEG_OPUS_VIDEO_MODE_OFFSETS_US,
+            mode
+        ));
         assert!(map_contains_mode(FACTORY_HEVC_AUDIO_MODE_OFFSETS_US, mode));
         assert!(map_contains_mode(FACTORY_HEVC_VIDEO_MODE_OFFSETS_US, mode));
+        assert!(map_contains_mode(
+            FACTORY_HEVC_OPUS_VIDEO_MODE_OFFSETS_US,
+            mode
+        ));
     }
 }
 
@@ -45,9 +59,17 @@ fn hevc_profile_defaults_are_separate_from_mjpeg_profile_defaults() {
         FACTORY_MJPEG_PCM_AUDIO_MODE_OFFSETS_US,
         FACTORY_HEVC_AUDIO_MODE_OFFSETS_US
     );
+    assert_ne!(
+        FACTORY_MJPEG_OPUS_AUDIO_MODE_OFFSETS_US, FACTORY_MJPEG_AUDIO_MODE_OFFSETS_US,
+        "MJPEG+Opus should preserve the blind client-to-RCT audio calibration"
+    );
+    assert_ne!(
+        FACTORY_MJPEG_OPUS_VIDEO_MODE_OFFSETS_US, FACTORY_MJPEG_VIDEO_MODE_OFFSETS_US,
+        "MJPEG+Opus should not silently borrow the PCM video timing map"
+    );
     assert_eq!(
         FACTORY_HEVC_OPUS_AUDIO_MODE_OFFSETS_US, FACTORY_HEVC_AUDIO_MODE_OFFSETS_US,
-        "Opus has a separate audio map that currently inherits PCM until lab calibration lands"
+        "HEVC+Opus keeps the PCM audio baseline until a dedicated lab pass lands"
     );
 }
 
diff --git a/tests/contract/server/uvc/server_uvc_binary_extra_contract.rs b/tests/contract/server/uvc/server_uvc_binary_extra_contract.rs
index a9b3139..4630edc 100644
--- a/tests/contract/server/uvc/server_uvc_binary_extra_contract.rs
+++ b/tests/contract/server/uvc/server_uvc_binary_extra_contract.rs
@@ -420,7 +420,12 @@ mod uvc_binary_extra {
 
         assert_eq!(stream.latest_frame, vec![0xff, 0xd8, 0x11, 0xff, 0xd9]);
         assert_eq!(stream.frame_payload_limit(), 8);
-        assert_eq!(stream.frame_for_buffer(4), EMPTY_MJPEG_FRAME);
+        assert_eq!(stream.frame_for_buffer(4), MINIMAL_MJPEG_FRAME);
+        assert_eq!(
+            UvcVideoStream::new(-1).frame_for_buffer(64 * 1024),
+            IDLE_MJPEG_FRAME
+        );
+        assert!(IDLE_MJPEG_FRAME.len() > 4);
     }
 
     #[test]
diff --git a/tests/installer/scripts/install/server_install_script_contract.rs b/tests/installer/scripts/install/server_install_script_contract.rs
index ab00068..b91f871 100644
--- a/tests/installer/scripts/install/server_install_script_contract.rs
+++ b/tests/installer/scripts/install/server_install_script_contract.rs
@@ -96,6 +96,12 @@ fn server_install_pins_hdmi_camera_and_display_defaults() {
     assert!(SERVER_INSTALL.contains(
         "DEFAULT_MJPEG_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US=1280x720@20=162659,1280x720@30=135090,1920x1080@20=160045,1920x1080@30=127952"
     ));
+    assert!(SERVER_INSTALL.contains(
+        "DEFAULT_MJPEG_OPUS_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US=1280x720@20=-34199,1280x720@30=-34199,1920x1080@20=-34199,1920x1080@30=-34199"
+    ));
+    assert!(SERVER_INSTALL.contains(
+        "DEFAULT_MJPEG_OPUS_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US=1280x720@20=541419,1280x720@30=513850,1920x1080@20=538805,1920x1080@30=506712"
+    ));
     assert!(SERVER_INSTALL.contains("DEFAULT_HEVC_UPSTREAM_AUDIO_PLAYOUT_OFFSET_US=0"));
     assert!(SERVER_INSTALL.contains("DEFAULT_HEVC_UPSTREAM_VIDEO_PLAYOUT_OFFSET_US=110000"));
     assert!(SERVER_INSTALL.contains(
@@ -105,6 +111,12 @@ fn server_install_pins_hdmi_camera_and_display_defaults() {
         "DEFAULT_HEVC_OPUS_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US=$DEFAULT_HEVC_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US"
     ));
     assert!(SERVER_INSTALL.contains("LESAVKA_UPLINK_AUDIO_CODEC=%s"));
+    assert!(
+        SERVER_INSTALL.contains("LESAVKA_UPSTREAM_MJPEG_OPUS_AUDIO_PLAYOUT_MODE_OFFSETS_US=%s")
+    );
+    assert!(
+        SERVER_INSTALL.contains("LESAVKA_UPSTREAM_MJPEG_OPUS_VIDEO_PLAYOUT_MODE_OFFSETS_US=%s")
+    );
     assert!(SERVER_INSTALL.contains("LESAVKA_UPSTREAM_HEVC_OPUS_AUDIO_PLAYOUT_MODE_OFFSETS_US=%s"));
     assert!(
         SERVER_INSTALL.contains("resolve_upstream_video_playout_offset_us"),
diff --git a/tests/regression/install/install_preserves_calibration_contract.rs b/tests/regression/install/install_preserves_calibration_contract.rs
index 1581a2c..e1f1e85 100644
--- a/tests/regression/install/install_preserves_calibration_contract.rs
+++ b/tests/regression/install/install_preserves_calibration_contract.rs
@@ -23,9 +23,12 @@ const PROFILE_OFFSETS: &str = include_str!(concat!(
 fn installer_persists_both_mjpeg_and_hevc_factory_offset_maps() {
     for marker in [
         "DEFAULT_MJPEG_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US=1280x720@20=162659,1280x720@30=135090,1920x1080@20=160045,1920x1080@30=127952",
+        "DEFAULT_MJPEG_OPUS_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US=1280x720@20=-34199,1280x720@30=-34199,1920x1080@20=-34199,1920x1080@30=-34199",
+        "DEFAULT_MJPEG_OPUS_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US=1280x720@20=541419,1280x720@30=513850,1920x1080@20=538805,1920x1080@30=506712",
         "DEFAULT_HEVC_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US=1280x720@20=173852,1280x720@30=110000,1920x1080@20=160045,1920x1080@30=127952",
         "DEFAULT_HEVC_OPUS_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US=$DEFAULT_HEVC_UPSTREAM_AUDIO_PLAYOUT_MODE_OFFSETS_US",
         "LESAVKA_UPSTREAM_MJPEG_VIDEO_PLAYOUT_MODE_OFFSETS_US=%s",
+        "LESAVKA_UPSTREAM_MJPEG_OPUS_VIDEO_PLAYOUT_MODE_OFFSETS_US=%s",
         "LESAVKA_UPSTREAM_HEVC_VIDEO_PLAYOUT_MODE_OFFSETS_US=%s",
         "LESAVKA_UPSTREAM_HEVC_OPUS_AUDIO_PLAYOUT_MODE_OFFSETS_US=%s",
         "LESAVKA_UPSTREAM_VIDEO_PLAYOUT_MODE_OFFSETS_US=%s",