[FFmpeg-trac] #10755(avformat:new): av_seek_frame on ogg with png stream abort()s

[FFmpeg]

#10755: av_seek_frame on ogg with png stream abort()s
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             Reporter:  doeme     |                     Type:  defect
               Status:  new       |                 Priority:  normal
            Component:  avformat  |                  Version:  6.0
             Keywords:  ogg       |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
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 I have a (potentially corrupt?) ogg file which contains an audio stream
 (vorbis) and a single static cover image (png).
 "avformat_find_stream_info" finds two streams, 0 => vorbis, 1 => png,
 however, if I try to seek in this file with "av_seek_frame" with
 stream_index = 1 (the png stream) libav abort()s due to stream_index >=
 nstreams in oggdec.c
 (https://git.ffmpeg.org/gitweb/ffmpeg.git/blob/46775e64f8b34f5e4d09df8458654f9f50626c4b:/libavformat/oggdec.c#l937).

 How to reproduce:

 Build the attached sample program, and run it on the sample.
 Essentially, this only verifies that the stream with index 1 exists, and
 then tries to av_seek_frame() with all possible streams as time base,
 where the png stream 1 causes an abort()
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10755>
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