[FFmpeg-trac] #1237(avformat:new): small audio file in MpegTs container cannot be open by ffmpeg.

[FFmpeg]

#1237: small audio file in MpegTs container cannot be open by ffmpeg.
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               Reporter:  tfoucu      |                  Owner:
                   Type:  defect      |                 Status:  new
               Priority:  normal      |              Component:  avformat
                Version:  git-master  |               Keywords:
             Blocked By:              |               Blocking:
Reproduced by developer:  0           |  Analyzed by developer:  0
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 Create a small audio silence file at low bitrate and output it to an
 mpeg2ts container

 Something like this.
 ./ffmpeg -ac 1 -ar 22050 -f s16le -i /dev/zero -b:a 32k -f mpegts -t 1.5
 -y /tmp/test.ts

 it will create a file of small size (less than 8KBytes)
 ls /tmp/test.ts
 7520 2012-04-19 17:51 /tmp/test.ts

 Then try to open it with ffmpeg and it will fail

 ./ffmpeg -i /tmp/test.ts
 ffmpeg version N-39707-gf22bf52 Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Apr 10 2012 16:22:27 with gcc 4.4.3
   configuration: --enable-nonfree --enable-version3 --enable-gpl
 --disable-mmx --enable-debug
   libavutil      51. 46.100 / 51. 46.100
   libavcodec     54. 14.101 / 54. 14.101
   libavformat    54.  3.100 / 54.  3.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 67.101 /  2. 67.101
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0. 11.100 /  0. 11.100
   libpostproc    52.  0.100 / 52.  0.100
 /tmp/test.ts: Operation not permitted

 The problem is in mpegts_read_header function which require 8KBytes of
 data to process the file.

 But this file is vallid.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1237>
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