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media/ffmpeg: Fix frameCount calculation when the stream duration is unset.

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Fixes #18844.
This commit is contained in:
Augustin Cavalier 2024-03-14 15:40:23 -04:00
parent 04ac3d9687
commit 3a3b54380a
1 changed files with 6 additions and 2 deletions
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8
src/add-ons/media/plugins/ffmpeg/AVFormatReader.cpp
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@ -1265,8 +1265,12 @@ AVFormatReader::Stream::GetStreamInfo(int64* frameCount,
*frameCount = fStream->nb_frames * fStream->codecpar->frame_size;
if (*frameCount == 0) {
// Calculate from duration and frame rate
*frameCount = (int64)(fStream->duration * frameRate
* fStream->time_base.num / fStream->time_base.den);
if (fStream->duration != AV_NOPTS_VALUE) {
*frameCount = (int64)(fStream->duration * frameRate
* fStream->time_base.num / fStream->time_base.den);
} else if (fContext->duration != AV_NOPTS_VALUE) {
*frameCount = (fContext->duration * frameRate);
}
TRACE(" frameCount calculated: %" B_PRIu64 ", from context: %" B_PRIu64 "\n",
*frameCount, fStream->nb_frames);
} else