From 46095177566a9b4e0141d5164014e69e4bfc3c86 Mon Sep 17 00:00:00 2001
From: ZGaetano <zgaetano@wilddragon.net>
Date: Thu, 4 Jun 2026 18:35:42 +0000
Subject: [PATCH] fix(growing): AVC-Intra 100 1080p59.94 via libx264 (verified
 raw2bmx accepts)

Verified on-node: libx264 high422 10-bit + x264 avcintra-class=100 -> raw2bmx -t op1a --avci100_1080p -f 60000/1001 produces a valid MXF (ffprobe: h264 High 4:2:2 Intra yuv422p10le 60000/1001). True 1080p59.94, openable in Premiere. CPU encode for now per demo deadline; NVENC h264 cannot do 4:2:2.
---
 services/capture/src/capture-manager.js | 44 +++++++++++++------------
 1 file changed, 23 insertions(+), 21 deletions(-)

diff --git a/services/capture/src/capture-manager.js b/services/capture/src/capture-manager.js
index ad20cef..9149dd2 100644
--- a/services/capture/src/capture-manager.js
+++ b/services/capture/src/capture-manager.js
@@ -359,9 +359,15 @@ const CONTAINER_EXT = {
 // bitrate (operator target, default 50 Mbps) match XDCAM HD422 essence. `-g 15`
 // keeps a short GOP. Muxed to a raw `mpeg2video` elementary stream (no
 // container) so raw2bmx ingests it via --mpeg2lg_*.
+// CPU AVC-Intra 100 via libx264 — the proven-working growing essence for
+// 1080p59.94 (NVENC h264 can't do 4:2:2; mpeg2 422 can't do 1080p59.94).
+// raw2bmx wraps this via --avci100_1080p at 60000/1001.
 const GROWING_VIDEO_ELEMENTARY_ARGS = [
-  '-c:v', 'mpeg2video', '-pix_fmt', 'yuv422p',
-  '-dc', '10', '-g', '15', '-bf', '2',
+  '-c:v', 'libx264', '-profile:v', 'high422', '-level', '4.2',
+  '-preset', 'ultrafast', '-tune', 'zerolatency',
+  '-pix_fmt', 'yuv422p10le',
+  '-x264-params', 'avcintra-class=100:bframes=0:keyint=1:scenecut=0',
+  '-aud', '1',
 ];
 const GROWING_DEFAULT_BITRATE = '25M';
 const GROWING_EXT = 'mxf';
@@ -411,36 +417,32 @@ function deriveGrowingRaster(resolution, framerate, scanHint = null) {
   }
   if (height == null) height = 1080; // default raster
 
-  // ffmpeg rate + raw2bmx rate strings for the common broadcast rates.
-  // CRITICAL: XDCAM HD422 (MPEG-2 422 Long GOP) at 1080 lines does NOT support
-  // 1080p59.94 — raw2bmx rejects MPEG-2 422 @ 60000/1001 outright. A 1080p59.94
-  // SDI feed is therefore wrapped as 1080i59.94 (= 30000/1001 frame rate), which
-  // is exactly what every previously-working growing file on the share used and
-  // what Premiere's edit-while-ingest path reads. So 59.94 maps to 30000/1001.
+  // ffmpeg rate + raw2bmx rate strings. AVC-Intra 100 DOES support true
+  // 1080p59.94 (unlike XDCAM HD422 / MPEG-2 422 which raw2bmx rejects at 60000/1001),
+  // so a 1080p59.94 SDI feed is wrapped progressively at its native 60000/1001.
   function rates(fps) {
-    if (fps == null) return { ff: '30000/1001', raw: '30000/1001' }; // 1080i59.94 default
-    if (Math.abs(fps - 59.94) < 0.2 || Math.abs(fps - 29.97) < 0.05)
-      return { ff: '30000/1001', raw: '30000/1001' };
+    if (fps == null) return { ff: '60000/1001', raw: '60000/1001' };
+    if (Math.abs(fps - 59.94) < 0.2) return { ff: '60000/1001', raw: '60000/1001' };
+    if (Math.abs(fps - 29.97) < 0.05) return { ff: '30000/1001', raw: '30000/1001' };
     if (Math.abs(fps - 60) < 0.05) return { ff: '60',    raw: '60' };
-    if (Math.abs(fps - 50) < 0.05) return { ff: '25',    raw: '25' };   // 1080i50 → 25 fps frames
+    if (Math.abs(fps - 50) < 0.05) return { ff: '50',    raw: '50' };
     if (Math.abs(fps - 25) < 0.05) return { ff: '25',    raw: '25' };
     if (Math.abs(fps - 24) < 0.2)  return { ff: '24000/1001', raw: '24000/1001' };
     if (Math.abs(fps - 30) < 0.05) return { ff: '30',    raw: '30' };
     return { ff: String(fps), raw: String(fps) };
   }
 
-  // Scan for the MPEG-2 422 essence. raw2bmx CANNOT wrap MPEG-2 422 as 1080p at
-  // 59.94, so a 1080-line raster is always wrapped as INTERLACED (1080i59.94),
-  // regardless of the progressive scanHint. 720 and below stay progressive.
-  if (height >= 1080) scan = 'i';
-  else if (scan == null) scan = scanHint || 'p';
+  // AVC-Intra wraps progressive natively, so respect the scanHint (Deltacast
+  // reports progressive). Default 1080 to interlaced only when no hint is given.
+  if (scan == null) scan = scanHint || ((height >= 1080) ? 'i' : 'p');
   const r = rates(fpsNum);
 
+  // AVC-Intra 100 raster flags. raw2bmx accepts 1080p59.94 here (verified).
   let rawFlag;
   if (height >= 1080) {
-    rawFlag = '--mpeg2lg_422p_hl_1080i';
+    rawFlag = (scan === 'i') ? '--avci100_1080i' : '--avci100_1080p';
   } else if (height >= 720) {
-    rawFlag = '--mpeg2lg_422p_hl_720p';
+    rawFlag = '--avci100_720p';
     if (fpsNum == null) { r.ff = '60000/1001'; r.raw = '60000/1001'; }
   } else {
     rawFlag = '--mpeg2lg_422p_ml_576i';
@@ -863,7 +865,7 @@ class CaptureManager {
       ...GROWING_VIDEO_ELEMENTARY_ARGS,
       '-b:v', vb, '-minrate', vb, '-maxrate', vb, '-bufsize', vb,
       '-r', ffRate,
-      '-f', 'mpeg2video', '@VF@',
+      '-f', 'h264', '@VF@',
       // (b) PCM s16le audio → "$AF"
       '-map', audioMap,
       '-c:a', 'pcm_s16le', '-ar', '48000', '-ac', String(ach),
@@ -912,7 +914,7 @@ class CaptureManager {
     // fields with the live frame count every 3s (Premiere reads the header
     // Duration on each refresh; without the patch it sees duration=N/A).
 const bmx = [
-  'raw2bmx', '-t', 'rdd9', '-o', '"$OUT"', '-f', frameRate,
+  'raw2bmx', '-t', 'op1a', '-o', '"$OUT"', '-f', frameRate,
   '--part', String(GROWING_PART_INTERVAL_FRAMES),
   '--index-follows',
   rawFlag, '"$VF"',