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charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: Addresses the issue reported in ticket #4609. Signed-off-by: Andreas Rheinhardt --- libavformat/webpenc.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/libavformat/webpenc.c b/libavformat/webpenc.c index b3f5bdc9b5..fb0cca3922 100644 --- a/libavformat/webpenc.c +++ b/libavformat/webpenc.c @@ -177,8 +177,8 @@ static int webp_write_trailer(AVFormatContext *s) if (w->using_webp_anim_encoder) { if (w->loop) { // Write loop count. - avio_seek(s->pb, 42, SEEK_SET); - avio_wl16(s->pb, w->loop); + if (avio_seek(s->pb, 42, SEEK_SET) == 42) + avio_wl16(s->pb, w->loop); } } else { int ret; @@ -186,10 +186,11 @@ static int webp_write_trailer(AVFormatContext *s) return ret; filesize = avio_tell(s->pb); - avio_seek(s->pb, 4, SEEK_SET); - avio_wl32(s->pb, filesize - 8); - // Note: without the following, avio only writes 8 bytes to the file. - avio_seek(s->pb, filesize, SEEK_SET); + if (avio_seek(s->pb, 4, SEEK_SET) == 4) { + avio_wl32(s->pb, filesize - 8); + // Note: without the following, avio only writes 8 bytes to the file. + avio_seek(s->pb, filesize, SEEK_SET); + } } return 0; -- 2.34.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".