diff --git a/services/capture/src/capture-manager.js b/services/capture/src/capture-manager.js
index 0a806df..006e8c7 100644
--- a/services/capture/src/capture-manager.js
+++ b/services/capture/src/capture-manager.js
@@ -366,13 +366,18 @@ const CONTAINER_EXT = {
 // essence is a raw H.264 stream (-f h264) wrapped by raw2bmx --avci100_1080p
 // at -f 60000/1001, clip type op1a. Verified on-node: produces a valid
 // "h264 / High 4:2:2 Intra / yuv422p10le / 60000/1001" MXF.
-const GROWING_VIDEO_ELEMENTARY_ARGS = [
-  '-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',
-];
+// AVC-Intra elementary encode args per class (50 / 100 / 200).
+const GROWING_AVCI_CLASS = { avci50: 50, avci100: 100, avci200: 200 };
+function growingVideoElementaryArgs(codec) {
+  const cls = GROWING_AVCI_CLASS[codec] || 100;
+  return [
+    '-c:v', 'libx264', '-profile:v', 'high422', '-level', '4.2',
+    '-preset', 'ultrafast', '-tune', 'zerolatency',
+    '-pix_fmt', 'yuv422p10le',
+    '-x264-params', `avcintra-class=${cls}:bframes=0:keyint=1:scenecut=0`,
+    '-aud', '1',
+  ];
+}
 const GROWING_DEFAULT_BITRATE = '25M';
 const GROWING_EXT = 'mxf';
 // Video essence partition interval (frames). raw2bmx starts a new body partition
@@ -386,7 +391,15 @@ const GROWING_PART_INTERVAL_FRAMES = 30;
 //                   raw2bmx. True-1080p59.94 mastering codec (default).
 //   'hevc_nvenc' -> all-intra HEVC (NVENC GPU, 4:2:0 10-bit) in fragmented MOV.
 //                   GPU-offloaded; frees CPU. Lower chroma, .mov not .mxf.
-const growingCodec = () => (process.env.GROWING_CODEC === 'hevc_nvenc' ? 'hevc_nvenc' : 'avci100');
+// Valid growing codec values: 'avci50' | 'avci100' | 'avci200' | 'hevc_nvenc'
+const GROWING_AVC_CODECS = new Set(['avci50', 'avci100', 'avci200']);
+const growingCodec = () => {
+  const v = process.env.GROWING_CODEC;
+  if (v === 'hevc_nvenc') return 'hevc_nvenc';
+  if (v === 'avci50')  return 'avci50';
+  if (v === 'avci200') return 'avci200';
+  return 'avci100'; // default
+};
 // File extension per growing codec.
 const growingExtFor = (codec) => (codec === 'hevc_nvenc' ? 'mov' : 'mxf');
 // Default bitrate for the HEVC-NVENC growing master (all-intra 10-bit is heavy).
@@ -406,7 +419,7 @@ const GROWING_HEVC_DEFAULT_BITRATE = '80M';
 // a sensible value from the recorder's configured resolution/framerate; if those
 // are absent or ambiguous it defaults to 1080i59.94. A live DeckLink confirm of
 // the actual SDI raster/fps is advised before production use (see report).
-function deriveGrowingRaster(resolution, framerate, scanHint = null) {
+function deriveGrowingRaster(resolution, framerate, scanHint = null, codec = 'avci100') {
   // Normalise fps. Accept '59.94', '60000/1001', '25', '50', '30', '29.97'…
   let fpsNum = null;
   const fr = (framerate == null) ? '' : String(framerate).trim();
@@ -451,12 +464,13 @@ function deriveGrowingRaster(resolution, framerate, scanHint = null) {
   if (scan == null) scan = scanHint || ((height >= 1080) ? 'i' : 'p');
   const r = rates(fpsNum);
 
-  // AVC-Intra 100 raster flags. --avci100_1080p accepts true 1080p59.94 (verified).
+  // AVC-Intra raster flags — class from codec name ('avci50'/'avci100'/'avci200').
+  const avciClass = GROWING_AVCI_CLASS[codec] || 100;
   let rawFlag;
   if (height >= 1080) {
-    rawFlag = (scan === 'i') ? '--avci100_1080i' : '--avci100_1080p';
+    rawFlag = (scan === 'i') ? `--avci${avciClass}_1080i` : `--avci${avciClass}_1080p`;
   } else if (height >= 720) {
-    rawFlag = '--avci100_720p';
+    rawFlag = `--avci${avciClass}_720p`;
     if (fpsNum == null) { r.ff = '60000/1001'; r.raw = '60000/1001'; }
   } else {
     rawFlag = '--mpeg2lg_422p_ml_576i';
@@ -903,8 +917,8 @@ class CaptureManager {
     return args;
   }
 
-  _buildGrowingOrchestrator({ inputArgs, videoBitrate, resolution, framerate, audioChannels, outPath, hlsDir, videoCodec, audioMap = '0:a:0?', interlaced = false }) {
-    const { rawFlag, frameRate, ffRate } = deriveGrowingRaster(resolution, framerate, interlaced ? 'i' : 'p');
+  _buildGrowingOrchestrator({ inputArgs, videoBitrate, resolution, framerate, audioChannels, outPath, hlsDir, videoCodec, growingCodecName = 'avci100', audioMap = '0:a:0?', interlaced = false }) {
+    const { rawFlag, frameRate, ffRate } = deriveGrowingRaster(resolution, framerate, interlaced ? 'i' : 'p', growingCodecName);
     const vb = videoBitrate || GROWING_DEFAULT_BITRATE;
     const ach = audioChannels ? Number(audioChannels) : 2;
 
@@ -927,7 +941,7 @@ class CaptureManager {
       '-filter_complex', filterComplex,
       // (a) MPEG-2 422 elementary video → "$VF"
       '-map', '[vhi]',
-      ...GROWING_VIDEO_ELEMENTARY_ARGS,
+      ...growingVideoElementaryArgs(growingCodecName),
       '-b:v', vb, '-minrate', vb, '-maxrate', vb, '-bufsize', vb,
       '-r', ffRate,
       '-f', 'h264', '@VF@',
@@ -1277,6 +1291,7 @@ exit "$BMXRC"
         outPath: growingPath,
         hlsDir: (sourceType === 'sdi' || sourceType === 'deltacast') ? sdiHlsDir : null,
         videoCodec,
+        growingCodecName: gCodec,
         audioMap,
         interlaced: isInterlacedSource,
       });
diff --git a/services/mam-api/src/routes/recorders.js b/services/mam-api/src/routes/recorders.js
index 60ea7a7..2eb0417 100644
--- a/services/mam-api/src/routes/recorders.js
+++ b/services/mam-api/src/routes/recorders.js
@@ -820,7 +820,7 @@ router.post('/:id/start', requireRecorderEdit, async (req, res, next) => {
       `GROWING_ENABLED=${growingEnabled ? 'true' : 'false'}`,
       // Growing codec: 'avci100' (CPU AVC-Intra 100 MXF, default) or
       // 'hevc_nvenc' (GPU all-intra HEVC frag-MOV). capture-manager reads this.
-      `GROWING_CODEC=${recorder.growing_codec === 'hevc_nvenc' ? 'hevc_nvenc' : 'avci100'}`,
+      `GROWING_CODEC=${['avci50','avci100','avci200','hevc_nvenc'].includes(recorder.growing_codec) ? recorder.growing_codec : 'avci100'}`,
       `GROWING_PATH=/growing`,
       // SMB mount details for the in-container CIFS mount (Approach A). Empty
       // GROWING_SMB_MOUNT → capture falls back to the host-bound /growing volume
@@ -918,7 +918,7 @@ router.post('/:id/start', requireRecorderEdit, async (req, res, next) => {
           growing_smb_username:      growingInfra.growing_smb_username || '',
           growing_smb_password:      growingInfra.growing_smb_password || '',
           growing_smb_vers:          growingInfra.growing_smb_vers || '3.0',
-          growing_codec:             recorder.growing_codec === 'hevc_nvenc' ? 'hevc_nvenc' : 'avci100',
+          growing_codec:             ['avci50','avci100','avci200','hevc_nvenc'].includes(recorder.growing_codec) ? recorder.growing_codec : 'avci100',
         };
         const captureRes = await fetch(captureStartUrl, {
           method: 'POST',
diff --git a/services/web-ui/public/screens-ingest.jsx b/services/web-ui/public/screens-ingest.jsx
index 46c18e5..e102ee8 100644
--- a/services/web-ui/public/screens-ingest.jsx
+++ b/services/web-ui/public/screens-ingest.jsx
@@ -619,7 +619,8 @@ function RecorderConfigModal({ recorder, onClose, onSaved }) {
   const _seedBitrate = (recorder.recording_video_bitrate || (recorder.growing_enabled === true ? '50' : '25')).replace(/M$/i, '');
   const [bitrate, setBitrate]   = React.useState(_seedBitrate);
   const [growing, setGrowing]   = React.useState(recorder.growing_enabled === true);
-  const [growingCodec, setGrowingCodec] = React.useState(recorder.growing_codec === 'hevc_nvenc' ? 'hevc_nvenc' : 'avci100');
+  const _validGC = new Set(['avci50','avci100','avci200','hevc_nvenc']);
+  const [growingCodec, setGrowingCodec] = React.useState(_validGC.has(recorder.growing_codec) ? recorder.growing_codec : 'avci100');
   const [projectId, setProjectId] = React.useState(recorder.project_id || PROJECTS[0]?.id || '');
   const [saving, setSaving]     = React.useState(false);
   const [err, setErr]           = React.useState(null);
@@ -743,13 +744,19 @@ function RecorderConfigModal({ recorder, onClose, onSaved }) {
               <select className="field-input" value={growingCodec}
                 onChange={e => setGrowingCodec(e.target.value)} disabled={isRec}
                 style={{ appearance: 'auto' }}>
-                <option value="avci100">AVC-Intra 100 (CPU, MXF · Premiere-native)</option>
-                <option value="hevc_nvenc">HEVC all-intra (GPU/NVENC, frag-MOV)</option>
+                <option value="avci50">AVC-Intra 50  (CPU, MXF · ~100 Mbps @ 59.94)</option>
+                <option value="avci100">AVC-Intra 100 (CPU, MXF · ~200 Mbps @ 59.94)</option>
+                <option value="avci200">AVC-Intra 200 (CPU, MXF · ~400 Mbps @ 59.94)</option>
+                <option value="hevc_nvenc">HEVC all-intra (GPU/NVENC, frag-MOV · experimental)</option>
               </select>
               <div className="mono" style={{ fontSize: 10.5, color: 'var(--text-3)', marginTop: 4 }}>
                 {growingCodec === 'hevc_nvenc'
-                  ? 'GPU-offloaded HEVC 10-bit 4:2:0 in fragmented MOV. Frees CPU. NOTE: not all editors import frag-MOV growing files.'
-                  : 'CPU AVC-Intra 100, 4:2:2 10-bit, true 1080p59.94 in MXF OP1a. Premiere-native growing.'}
+                  ? 'GPU-offloaded HEVC 10-bit 4:2:0 in fragmented MOV. NOTE: Premiere does not import frag-MOV growing files.'
+                  : growingCodec === 'avci50'
+                  ? 'AVC-Intra Class 50 — ~100 Mbps @ 1080p59.94. Lowest storage, broadcast-grade 4:2:2 10-bit. Premiere-native.'
+                  : growingCodec === 'avci200'
+                  ? 'AVC-Intra Class 200 — ~400 Mbps @ 1080p59.94. Highest quality, 4:2:2 10-bit. Premiere-native.'
+                  : 'AVC-Intra Class 100 — ~200 Mbps @ 1080p59.94. Balanced quality and storage. Premiere-native.'}
               </div>
             </div>
             <div className="field">
@@ -817,7 +824,7 @@ function _normRecorder(r) {
     res: r.recording_resolution || '·',
     framerate: r.recording_framerate || 'native',
     growing: r.growing_enabled === true,
-    growingCodec: r.growing_codec === 'hevc_nvenc' ? 'hevc_nvenc' : 'avci100',
+    growingCodec: (['avci50','avci100','avci200','hevc_nvenc'].includes(r.growing_codec) ? r.growing_codec : 'avci100'),
     nodeId: r.node_id || null,
     node: r.node_id ? r.node_id.slice(0, 8) : 'primary',
     deviceIndex: portIdx ?? null,
@@ -1130,7 +1137,10 @@ function RecorderRow({ recorder: initialRecorder, onRefresh, onConfigure, nodeOn
             <span className="badge accent" title={recorder.growingCodec === 'hevc_nvenc'
               ? 'Growing-file · HEVC all-intra (NVENC GPU, fragmented MOV)'
               : 'Growing-file · AVC-Intra 100 (CPU, MXF OP1a)'}>
-              GROWING · {recorder.growingCodec === 'hevc_nvenc' ? 'GPU/HEVC' : 'CPU/AVCI'}
+              GROWING · {recorder.growingCodec === 'hevc_nvenc' ? 'GPU/HEVC'
+                : recorder.growingCodec === 'avci50'  ? 'CPU/AVCI-50'
+                : recorder.growingCodec === 'avci200' ? 'CPU/AVCI-200'
+                : 'CPU/AVCI-100'}
             </span>
           )}
         </div>