diff --git a/client/src/input/camera.rs b/client/src/input/camera.rs
index d0f8f92..6783050 100644
--- a/client/src/input/camera.rs
+++ b/client/src/input/camera.rs
@@ -1,13 +1,11 @@
 // client/src/input/camera.rs
 #![forbid(unsafe_code)]
 
-use anyhow::Result;
 use anyhow::Context;
 use gstreamer as gst;
 use gstreamer_app as gst_app;
 use gst::prelude::*;
 use lesavka_common::lesavka::VideoPacket;
-use v4l::capability::Capabilities;
 
 pub struct CameraCapture {
     pipeline: gst::Pipeline,
@@ -127,17 +125,18 @@ impl CameraCapture {
     }
 
     fn is_capture(dev: &str) -> bool {
-        match v4l::Device::with_path(dev) {
-            Ok(d) => d
-                .query_caps()
-                .map(|caps| {
-                    let c = caps.capabilities;
-                    c.contains(Capabilities::VIDEO_CAPTURE)
-                        || c.contains(Capabilities::VIDEO_CAPTURE_MPLANE)
-                })
-                .unwrap_or(false),
-            Err(_) => false,
-        }
+        const V4L2_CAP_VIDEO_CAPTURE: u32 = 0x0000_0001;
+        const V4L2_CAP_VIDEO_CAPTURE_MPLANE: u32 = 0x0000_1000;
+
+        v4l::Device::with_path(dev)
+            .ok()
+            .and_then(|d| d.query_caps().ok())
+            .map(|caps| {
+                let bits = caps.capabilities.bits();
+                (bits & V4L2_CAP_VIDEO_CAPTURE != 0)
+                    || (bits & V4L2_CAP_VIDEO_CAPTURE_MPLANE != 0)
+            })
+            .unwrap_or(false)
     }
 
     /// Cheap stub used when the web‑cam is disabled
diff --git a/client/src/input/inputs.rs b/client/src/input/inputs.rs
index 1ae54c2..100272c 100644
--- a/client/src/input/inputs.rs
+++ b/client/src/input/inputs.rs
@@ -3,7 +3,7 @@
 use anyhow::{bail, Context, Result};
 use evdev::{Device, EventType, KeyCode, RelativeAxisCode};
 use tokio::{sync::broadcast::Sender, time::{interval, Duration}};
-use tracing::{debug, info, warn, trace};
+use tracing::{debug, info, warn};
 
 use lesavka_common::lesavka::{KeyboardReport, MouseReport};
 
diff --git a/client/src/output/audio.rs b/client/src/output/audio.rs
index 6154990..2322002 100644
--- a/client/src/output/audio.rs
+++ b/client/src/output/audio.rs
@@ -157,20 +157,16 @@ fn pick_sink_element() -> Result<String> {
 }
 
 fn list_pw_sinks() -> Vec<(String, String)> {
-    let mut out = Vec::new();
-    if out.is_empty() {
-        // ── PulseAudio / pactl fallback ────────────────────────────────
-        if let Ok(info) = std::process::Command::new("pactl")
-            .args(["info"])
-            .output()
-            .map(|o| String::from_utf8_lossy(&o.stdout).to_string())
-        {
-            if let Some(line) = info.lines().find(|l| l.starts_with("Default Sink:")) {
-                let def = line["Default Sink:".len()..].trim();
-                return vec![(def.to_string(), "UNKNOWN".to_string())];
-            }
+    // ── PulseAudio / pactl fallback ────────────────────────────────
+    if let Ok(info) = std::process::Command::new("pactl")
+        .args(["info"])
+        .output()
+        .map(|o| String::from_utf8_lossy(&o.stdout).to_string())
+    {
+        if let Some(line) = info.lines().find(|l| l.starts_with("Default Sink:")) {
+            let def = line["Default Sink:".len()..].trim();
+            return vec![(def.to_string(), "UNKNOWN".to_string())];
         }
     }
-
-    out
+    Vec::new()
 }
diff --git a/client/src/output/video.rs b/client/src/output/video.rs
index 6e4ea44..da98029 100644
--- a/client/src/output/video.rs
+++ b/client/src/output/video.rs
@@ -1,17 +1,14 @@
 // client/src/output/video.rs
 
 use std::process::Command;
-use std::time::Duration;
-use std::thread;
 use anyhow::Context;
 use gstreamer as gst;
+use gst::glib::{Cast, ObjectExt};
 use gstreamer_app as gst_app;
-use gstreamer_video::{prelude::*, VideoOverlay};
-use gst::prelude::*;
+use gstreamer_video::VideoOverlay;
+use gstreamer_video::prelude::VideoOverlayExtManual;
 use lesavka_common::lesavka::VideoPacket;
 use tracing::{error, info, warn, debug};
-use gstreamer_video as gst_video;
-use gstreamer_video::glib::Type;
 
 use crate::output::{display, layout};
 
@@ -63,7 +60,7 @@ impl MonitorWindow {
         /* -------- move/resize overlay ---------------------------------- */
         if let Some(sink_elem) = pipeline.by_name("sink") {
             // give the native window a predictable title for wmctrl/placement
-            sink_elem.set_property("window-title", &format!("Lesavka-eye-{id}")).ok();
+            let _ = sink_elem.set_property("window-title", &format!("Lesavka-eye-{id}"));
 
             if let Ok(overlay) = sink_elem.dynamic_cast::<VideoOverlay>() {
                 if let Some(r) = rects.get(id as usize) {
diff --git a/scripts/install/client.sh b/scripts/install/client.sh
index e6ab188..ff2c0a0 100755
--- a/scripts/install/client.sh
+++ b/scripts/install/client.sh
@@ -6,7 +6,7 @@ ORIG_USER=${SUDO_USER:-$(id -un)}
 
 # 1. packages (Arch)
 sudo pacman -Syq --needed --noconfirm \
-  git rustup protobuf gcc evtest base-devel \
+  git rustup protobuf gcc clang evtest base-devel \
   gstreamer gst-plugins-base gst-plugins-good gst-plugins-bad gst-plugins-ugly gst-libav \
   pipewire pipewire-pulse \
   wmctrl qt6-tools