[FFmpeg-trac] #9029(avformat:open): ffmpeg can not open file while PotPlayer and VLC Player can

[FFmpeg]

#9029: ffmpeg can not open file while PotPlayer and VLC Player can
-------------------------------------+-------------------------------------
             Reporter:  popova-      |                    Owner:
  ksiusha912                         |
                 Type:  defect       |                   Status:  open
             Priority:  important    |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  flv          |               Blocked By:
  codecpar regression                |
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by popova-ksiusha912):

 Replying to [comment:3 fulinjie]:
 > Replying to [comment:1 popova-ksiusha912]:
 > > [https://www.mediafire.com/file/7b7w8ssio32qo2p/sample.flv/file]
 > > Video file here.
 > > 21.83 MB, can't make it an attachment.
 > >
 > HI,
 >
 > This seems to be related with 87f0c8280:
 > "ist->st->event_flags & AVSTREAM_EVENT_FLAG_NEW_PACKETS" differs from
 "ist->st->codec_info_nb_frames", if extradata is not extracted correctly.
 >
 > Would you please help to verify the patch in [1]?
 >
 >
 > [1]
 https://patchwork.ffmpeg.org/project/ffmpeg/patch/20210124130033.1086545-1-linjie.justin.fu@gmail.com/

 Hmm, sorry, I am not a developer, I have no idea how to verify it.

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Ticket URL: <https://trac.ffmpeg.org/ticket/9029#comment:5>
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