PR #24783 opened by ffmpeg-devel URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24783 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24783.patch
**Backport:** https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24665 So far, if an avformats write_trailer call returned a positive value instead of 0, like for example movenc does for the number of bytes written, it would hide any pb context failures. This adjusts the check to expect positive return values, and only overwrites them with the pb error if it actually had an error, to preserve the return value in case something came to rely on it. >From 530c0ace63bb477241b5a7a341d153bac93bb5d9 Mon Sep 17 00:00:00 2001 From: Timo Rothenpieler <[email protected]> Date: Thu, 24 Sep 2026 14:21:41 +0200 Subject: [PATCH] avformat/mux: don't let positive write_trailer ret shadow pb failure (cherry picked from commit 1de217ad4b98163b7f5a372853b1c943ed6f070d) --- libavformat/avformat.h | 2 +- libavformat/mux.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/libavformat/avformat.h b/libavformat/avformat.h index 56c1c80289..f30bfde1c1 100644 --- a/libavformat/avformat.h +++ b/libavformat/avformat.h @@ -2671,7 +2671,7 @@ int av_write_uncoded_frame_query(AVFormatContext *s, int stream_index); * May only be called after a successful call to avformat_write_header. * * @param s media file handle - * @return 0 if OK, AVERROR_xxx on error + * @return >=0 if OK, AVERROR_xxx on error */ int av_write_trailer(AVFormatContext *s); diff --git a/libavformat/mux.c b/libavformat/mux.c index 011de51ddd..aed8f72543 100644 --- a/libavformat/mux.c +++ b/libavformat/mux.c @@ -1325,8 +1325,8 @@ int av_write_trailer(AVFormatContext *s) if (s->pb) avio_flush(s->pb); - if (ret == 0) - ret = s->pb ? s->pb->error : 0; + if (ret >= 0 && s->pb && s->pb->error < 0) + ret = s->pb->error; for (unsigned i = 0; i < s->nb_streams; i++) { av_freep(&s->streams[i]->priv_data); av_freep(&ffstream(s->streams[i])->index_entries); -- 2.52.0 _______________________________________________ ffmpeg-devel mailing list -- [email protected] To unsubscribe send an email to [email protected]
