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avcodec/videotoolboxenc: support global_quality without qscale

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(cherry picked from commit fc45127bcc79731a2e3ec5858a00c35c6cfbc1c0)
Signed-off-by: Marvin Scholz <epirat07@gmail.com>
This commit is contained in:
Zhao Zhili 2025-09-01 01:36:25 +08:00 • committed by Marvin Scholz
parent a2179be5e9
commit d3265e15ee
1 changed files with 4 additions and 2 deletions
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6
libavcodec/videotoolboxenc.c
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@ -1245,8 +1245,10 @@ static int vtenc_create_encoder(AVCodecContext *avctx,
return AVERROR_EXTERNAL;
}
if (avctx->flags & AV_CODEC_FLAG_QSCALE) {
Float32 quality = fminf(avctx->global_quality / 100.0f / FF_QP2LAMBDA, 1.0f);
if (avctx->flags & AV_CODEC_FLAG_QSCALE || avctx->global_quality > 0) {
float factor = (avctx->flags & AV_CODEC_FLAG_QSCALE) ?
FF_QP2LAMBDA * 100.0f : 100.0f;
Float32 quality = fminf(avctx->global_quality / factor, 1.0f);
CFNumberRef quality_num = CFNumberCreate(kCFAllocatorDefault,
kCFNumberFloat32Type,
&quality);