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fix: updated hardware scale filters to explicitly output 8-bit format (nv12), removed conflicting -pix_fmt flag

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Trevor Mears
2026-01-19 15:13:39 -08:00
parent 8d5e94ccca
commit 3272b19177
1 changed files with 5 additions and 5 deletions
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server/services/transcodeSession.js
+5 -5
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@@ -400,12 +400,13 @@ class TranscodeSession extends EventEmitter {
if (upscaleMethod === 'hardware' || !useUpscale) { if (upscaleMethod === 'hardware' || !useUpscale) {
switch (encoder) { switch (encoder) {
case 'nvenc': case 'nvenc':
// NVIDIA CUDA scaling with Lanczos for upscaling // NVIDIA CUDA scaling with Lanczos
return `scale_cuda=-2:${height}:interp_algo=lanczos`; // Force nv12 (8-bit) output to handle 10-bit inputs (fixes "10 bit encode not supported")
return `scale_cuda=-2:${height}:interp_algo=lanczos:format=nv12`;
case 'vaapi': case 'vaapi':
return `scale_vaapi=w=-2:h=${height}:format=nv12`; return `scale_vaapi=w=-2:h=${height}:format=nv12`;
case 'qsv': case 'qsv':
return `scale_qsv=w=-2:h=${height}`; return `scale_qsv=w=-2:h=${height}:format=nv12`;
case 'amf': case 'amf':
// AMF uses CPU decode, so use software scale // AMF uses CPU decode, so use software scale
return useUpscale ? `scale=-2:${height}:flags=lanczos` : `scale=-2:${height}`; return useUpscale ? `scale=-2:${height}:flags=lanczos` : `scale=-2:${height}`;
@@ -433,8 +434,7 @@ class TranscodeSession extends EventEmitter {
'-preset', 'p4', // Balanced preset (p1=fastest, p7=best) '-preset', 'p4', // Balanced preset (p1=fastest, p7=best)
'-rc', 'constqp', // Constant QP mode '-rc', 'constqp', // Constant QP mode
'-qp', String(qp), '-qp', String(qp),
'-bf', '3', // B-frames for better compression '-bf', '3' // B-frames for better compression
'-pix_fmt', 'yuv420p' // Force 8-bit output for compatibility
); );
} }