diff --git a/services/capture/src/capture-manager.js b/services/capture/src/capture-manager.js
index 141d829..8271a99 100644
--- a/services/capture/src/capture-manager.js
+++ b/services/capture/src/capture-manager.js
@@ -360,10 +360,10 @@ const CONTAINER_EXT = {
 // keeps a short GOP. Muxed to a raw `mpeg2video` elementary stream (no
 // container) so raw2bmx ingests it via --mpeg2lg_*.
 const GROWING_VIDEO_ELEMENTARY_ARGS = [
-  '-c:v', 'h264_nvenc', '-profile:v', 'high422',
+  '-c:v', 'h264_nvenc', '-profile:v', 'high',
   '-preset', 'p1', '-tune', 'll',
   '-rc', 'constqp', '-qp', '21',
-  '-pix_fmt', 'yuv422p',
+  '-pix_fmt', 'yuv420p',
   '-g', '1',
 ];
 const GROWING_DEFAULT_BITRATE = '25M';
@@ -437,12 +437,12 @@ function deriveGrowingRaster(resolution, framerate, scanHint = null) {
 
   let rawFlag;
   if (height >= 1080) {
-    rawFlag = (scan === 'p') ? '--avci100_1080p' : '--avci100_1080i';
+    rawFlag = '--avc_high';
   } else if (height >= 720) {
-    rawFlag = '--avci100_720p';            // 720 is always progressive
+    rawFlag = '--avc_high';
     if (fpsNum == null) { r.ff = '60000/1001'; r.raw = '60000/1001'; }
   } else {
-    rawFlag = '--mpeg2lg_422p_ml_576i';            // SD 576i (PAL); 25 fps
+    rawFlag = '--mpeg2lg_422p_ml_576i';
     r.ff = '25'; r.raw = '25';
   }
 
@@ -910,13 +910,13 @@ class CaptureManager {
     // on stop, so the inline Python dur-patch below overwrites the header Duration
     // fields with the live frame count every 3s (Premiere reads the header
     // Duration on each refresh; without the patch it sees duration=N/A).
-    const bmx = [
-      'raw2bmx', '-t', 'rdd9', '-o', '"$OUT"', '-f', frameRate,
-      '--part', String(GROWING_PART_INTERVAL_FRAMES),
-      '--index-follows',
-      rawFlag, '"$VF"',
-      '-s', '48000', '-q', '16', '--audio-chan', String(ach), '--pcm', '"$AF"',
-    ];
+const bmx = [
+  'raw2bmx', '-t', 'op1a', '-o', '"$OUT"', '-f', frameRate,
+  '--part', String(GROWING_PART_INTERVAL_FRAMES),
+  '--index-follows',
+  rawFlag, '"$VF"',
+  '-s', '48000', '-q', '16', '--audio-chan', String(ach), '--pcm', '"$AF"',
+];
     const bmxLine = bmx
       .map((t) => (t.startsWith('"$') ? t : sh(t)))
       .join(' ');