From aba2a689b4be354953bdf88093c4b323bccc9ce5 Mon Sep 17 00:00:00 2001
From: Brad Stein <Brad.Stein@gmail.com>
Date: Tue, 6 Jan 2026 21:36:13 -0300
Subject: [PATCH] client: add MJPEG quality control

---
 client/src/input/camera.rs | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/client/src/input/camera.rs b/client/src/input/camera.rs
index 88b80a0..e779c31 100644
--- a/client/src/input/camera.rs
+++ b/client/src/input/camera.rs
@@ -40,6 +40,7 @@ impl CameraCapture {
             .ok()
             .map(|v| matches!(v.to_ascii_lowercase().as_str(), "mjpeg" | "mjpg" | "jpeg"))
             .unwrap_or(false);
+        let jpeg_quality = env_u32("LESAVKA_CAM_JPEG_QUALITY", 85).clamp(1, 100);
         let (enc, kf_prop, kf_val) = if use_mjpg_source && !output_mjpeg {
             ("x264enc", "key-int-max", "30")
         } else {
@@ -49,7 +50,9 @@ impl CameraCapture {
             tracing::info!("📸 using MJPG source with software encode");
         }
         if output_mjpeg {
-            tracing::info!("📸 outputting MJPEG frames for UVC");
+            tracing::info!(
+                "📸 outputting MJPEG frames for UVC (quality={jpeg_quality})"
+            );
         } else {
             tracing::info!("📸 using encoder element: {enc}");
         }
@@ -94,7 +97,7 @@ impl CameraCapture {
             if use_mjpg_source {
                 format!(
                     "v4l2src device={dev} do-timestamp=true ! \
-                     image/jpeg,width={width},height={height} ! \
+                     image/jpeg,width={width},height={height},framerate={fps}/1 ! \
                      queue max-size-buffers=30 leaky=downstream ! \
                      appsink name=asink emit-signals=true max-buffers=60 drop=true"
                 )
@@ -102,7 +105,7 @@ impl CameraCapture {
                 format!(
                     "v4l2src device={dev} do-timestamp=true ! \
                      video/x-raw,width={width},height={height},framerate={fps}/1 ! \
-                     videoconvert ! jpegenc ! \
+                     videoconvert ! jpegenc quality={jpeg_quality} ! \
                      queue max-size-buffers=30 leaky=downstream ! \
                      appsink name=asink emit-signals=true max-buffers=60 drop=true"
                 )