From ea8f8d28d096827636f518b6074d31fc472d03c6 Mon Sep 17 00:00:00 2001 From: Andreas Rheinhardt Date: Thu, 6 Aug 2020 01:21:38 +0200 Subject: avformat/sierravmd: Don't return packets for non-existing stream It leads to an assert in ff_read_packet(). Reviewed-by: Michael Niedermayer Signed-off-by: Andreas Rheinhardt --- libavformat/sierravmd.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'libavformat/sierravmd.c') diff --git a/libavformat/sierravmd.c b/libavformat/sierravmd.c index 531fc41531..40bcb77986 100644 --- a/libavformat/sierravmd.c +++ b/libavformat/sierravmd.c @@ -174,6 +174,8 @@ static int vmd_read_header(AVFormatContext *s) avpriv_set_pts_info(vst, 33, num, den); avpriv_set_pts_info(st, 33, num, den); } + if (!s->nb_streams) + return AVERROR_INVALIDDATA; toc_offset = AV_RL32(&vmd->vmd_header[812]); vmd->frame_count = AV_RL16(&vmd->vmd_header[6]); @@ -241,6 +243,8 @@ static int vmd_read_header(AVFormatContext *s) current_audio_pts++; break; case 2: /* Video Chunk */ + if (!vst) + break; vmd->frame_table[total_frames].frame_offset = current_offset; vmd->frame_table[total_frames].stream_index = vmd->video_stream_index; vmd->frame_table[total_frames].frame_size = size; -- cgit v1.2.3