diff --git a/services/mam-api/src/routes/recorders.js b/services/mam-api/src/routes/recorders.js
index 491534b..60ea7a7 100644
--- a/services/mam-api/src/routes/recorders.js
+++ b/services/mam-api/src/routes/recorders.js
@@ -154,7 +154,7 @@ const RECORDER_FIELDS = [
   'proxy_audio_codec', 'proxy_audio_bitrate', 'proxy_audio_channels',
   'proxy_container',
   'project_id', 'node_id', 'device_index',
-  'growing_enabled', 'label',
+  'growing_enabled', 'growing_codec', 'label',
 ];
 
 function pickRecorderFields(body) {
diff --git a/services/web-ui/public/screens-ingest.jsx b/services/web-ui/public/screens-ingest.jsx
index fd210a5..46c18e5 100644
--- a/services/web-ui/public/screens-ingest.jsx
+++ b/services/web-ui/public/screens-ingest.jsx
@@ -619,6 +619,7 @@ function RecorderConfigModal({ recorder, onClose, onSaved }) {
   const _seedBitrate = (recorder.recording_video_bitrate || (recorder.growing_enabled === true ? '50' : '25')).replace(/M$/i, '');
   const [bitrate, setBitrate]   = React.useState(_seedBitrate);
   const [growing, setGrowing]   = React.useState(recorder.growing_enabled === true);
+  const [growingCodec, setGrowingCodec] = React.useState(recorder.growing_codec === 'hevc_nvenc' ? 'hevc_nvenc' : 'avci100');
   const [projectId, setProjectId] = React.useState(recorder.project_id || PROJECTS[0]?.id || '');
   const [saving, setSaving]     = React.useState(false);
   const [err, setErr]           = React.useState(null);
@@ -636,6 +637,7 @@ function RecorderConfigModal({ recorder, onClose, onSaved }) {
       label: label.trim() || null,
       recording_codec: effCodec,
       growing_enabled: growing,
+      growing_codec: growing ? growingCodec : undefined,
       project_id: projectId || null,
     };
     if (showBitrate && bitrate) body.recording_video_bitrate = String(bitrate).replace(/M$/i, '') + 'M';
@@ -706,7 +708,7 @@ function RecorderConfigModal({ recorder, onClose, onSaved }) {
             </div>
             <div className="rec-mode-hint">
               {growing
-                ? 'Writes a growing XDCAM HD422 MXF (OP1a) to the SMB share so editors can cut the clip live in Premiere.'
+                ? 'Writes a growing master to the SMB share so editors can cut the clip live (codec selectable below).'
                 : 'Encodes a GPU master (HEVC/H.264) streamed straight to the library on stop.'}
             </div>
           </div>
@@ -735,15 +737,31 @@ function RecorderConfigModal({ recorder, onClose, onSaved }) {
               )}
             </div>
           ) : (
+            <div className="rec-cfg-grid">
             <div className="field">
-              <label className="field-label">XDCAM HD422 bitrate (Mbps)</label>
+              <label className="field-label">Growing codec</label>
+              <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>
+              </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.'}
+              </div>
+            </div>
+            <div className="field">
+              <label className="field-label">Bitrate (Mbps)</label>
               <input className="field-input" type="number" min="1" max="400" step="1"
                 value={bitrate} disabled={isRec}
                 onChange={e => setBitrate(e.target.value)} />
               <div className="mono" style={{ fontSize: 10.5, color: 'var(--text-3)', marginTop: 4 }}>
-                Target bitrate of the growing MXF essence. Broadcast XDCAM HD422 is 50 Mbps; raise for higher quality.
+                Target bitrate of the growing essence. AVC-Intra 100 is ~226 Mbps; HEVC tunable.
               </div>
             </div>
+            </div>
           )}
 
           <div className="field">
@@ -799,6 +817,7 @@ 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',
     nodeId: r.node_id || null,
     node: r.node_id ? r.node_id.slice(0, 8) : 'primary',
     deviceIndex: portIdx ?? null,
@@ -1107,7 +1126,13 @@ function RecorderRow({ recorder: initialRecorder, onRefresh, onConfigure, nodeOn
               <Icon name="signal" size={10} style={{ marginRight: 4, verticalAlign: -1 }} />{recorder.capturePort}
             </span>
           )}
-          {recorder.growing && <span className="badge accent" title="Growing-file (edit-while-record)">GROWING</span>}
+          {recorder.growing && (
+            <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'}
+            </span>
+          )}
         </div>
         <div className="recorder-sub">
           <span>{recorder.codec}</span><span className="recorder-sub-sep">·</span>