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avcodec/videotoolboxenc: Fixes non-B-Frame encoding

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Sets vtctx->has_b_frames to 0 if the VideoToolbox compression
session will not emit B-frames (and, in consequence, no valid
DTSs). Required for the handling of invalid DTSs in
'vtenc_cm_to_avpacket' (line 2018ff) to work correctly and not
abort encoding with "DTS is invalid." when no B-frames are
generated.

Signed-off-by: NoHalfBits <ffmpeg-devel@fluthaus.com>
Signed-off-by: Rick Kern <kernrj@gmail.com>
This commit is contained in:
NoHalfBits 2021-09-26 14:47:52 +02:00 committed by Rick Kern
parent 90546c6ca7
commit b786bc7433
1 changed files with 4 additions and 1 deletions
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5
libavcodec/videotoolboxenc.c
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@ -1516,7 +1516,10 @@ static av_cold int vtenc_init(AVCodecContext *avctx)
if (!status && has_b_frames_cfbool) {
//Some devices don't output B-frames for main profile, even if requested.
// HEVC has b-pyramid
vtctx->has_b_frames = (CFBooleanGetValue(has_b_frames_cfbool) && avctx->codec_id == AV_CODEC_ID_HEVC) ? 2 : 1;
if (CFBooleanGetValue(has_b_frames_cfbool))
vtctx->has_b_frames = avctx->codec_id == AV_CODEC_ID_HEVC ? 2 : 1;
else
vtctx->has_b_frames = 0;
CFRelease(has_b_frames_cfbool);
}
avctx->has_b_frames = vtctx->has_b_frames;