This is an automated email from the git hooks/post-receive script. Git pushed a commit to branch master in repository ffmpeg.
commit 7b3b537d55128c5fa14df73cd216701e0ea79c41 Author: Martin Mirchev <[email protected]> AuthorDate: Tue Oct 27 11:45:20 2026 +0800 Commit: Peter Ross <[email protected]> CommitDate: Fri Oct 30 04:22:49 2026 +0000 avcodec/vp3: fix quantizer matrix update with frame threading vp3_update_thread_context() compared every s->qps[i] with s1->qps[1] instead of s1->qps[i]. When a thread's previous qps[i] happened to equal the new qps[1], qmat[i] was not copied while qps[] still was, so the next frame with the same quantizers was dequantized with a stale matrix and the output depended on the number of threads. This only affects Theora streams that use more than one quantizer per frame. Signed-off-by: Martin Mirchev <[email protected]> --- libavcodec/vp3.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c index ca468b047c..9b6b9901d8 100644 --- a/libavcodec/vp3.c +++ b/libavcodec/vp3.c @@ -2517,7 +2517,7 @@ static int vp3_update_thread_context(AVCodecContext *dst, const AVCodecContext * if (s != s1) { // copy qscale data if necessary for (int i = 0; i < 3; i++) { - if (s->qps[i] != s1->qps[1]) { + if (s->qps[i] != s1->qps[i]) { qps_changed = 1; memcpy(&s->qmat[i], &s1->qmat[i], sizeof(s->qmat[i])); } -- To stop receiving notification emails like this one, please contact [email protected]. _______________________________________________ ffmpeg-cvslog mailing list -- [email protected] To unsubscribe send an email to [email protected]
