[FFmpeg-trac] #2568(FFprobe:new): ffprobe is unreliable when processing random text files

FFmpeg trac at avcodec.org
Tue May 14 20:19:53 CEST 2013


#2568: ffprobe is unreliable when processing random text files
-------------------------------------+-------------------------------------
             Reporter:               |                     Type:  defect
  ahthovaikied                       |                 Priority:  normal
               Status:  new          |                  Version:
            Component:  FFprobe      |  unspecified
             Keywords:  ffprobe      |               Blocked By:
  text                               |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 FFprobe is unreliable when processing small text files that are not media
 files: it reports random codecs instead of rejecting the files.

 For example with a text file containing the lines:
 {{{
 1. Restless
 2. Enter
 3. Pearls of light
 4. Deep Within
 5. Gatekeeper
 6. Grace
 7. Blooded
 8. Candles
 }}}

 I get:
 {{{
 $ ./ffprobe -loglevel debug text_file.txt
 ffprobe version N-53047-ge751481 Copyright (c) 2007-2013 the FFmpeg
 developers
   built on May 14 2013 19:38:50 with gcc 4.6 (Ubuntu/Linaro
 4.6.3-1ubuntu5)
   configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-
 x11grab --disable-encoder=vorbis --disable-encoder=aac --enable-
 libopencore-amrnb --enable-libopencore-amrwb --enable-libfaac --enable-
 libfdk-aac --enable-librtmp --enable-libmp3lame --enable-libtheora
 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid
 --enable-libopus --disable-runtime-cpudetect --disable-ffserver --disable-
 debug --cpu=corei7
   libavutil      52. 31.100 / 52. 31.100
   libavcodec     55.  9.100 / 55.  9.100
   libavformat    55.  7.100 / 55.  7.100
   libavdevice    55.  0.100 / 55.  0.100
   libavfilter     3. 65.100 /  3. 65.100
   libswscale      2.  3.100 /  2.  3.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  3.100 / 52.  3.100
 [tty @ 0x28fa260] Format tty probed with size=2048 and score=50
 [tty @ 0x28fa260] File position before avformat_find_stream_info() is 0
 [tty @ 0x28fa260] File position after avformat_find_stream_info() is 106
 Input #0, tty, from 'text_file.txt':
   Duration: 00:00:00.04, bitrate: 21 kb/s
     Stream #0:0, 1, 1/25: Video: ansi, pal8, 640x400, 1/25, 25 fps, 25
 tbr, 25 tbn, 25 tbc
 [AVIOContext @ 0x2902920] Statistics: 106 bytes read, 0 seeks
 }}}

 I tried with ffmpeg:
 - 1.2.1
 - from git today (version.sh outputs N-53047-ge751481).

 I'm on Ubuntu 12.04 64bits, the configure options I use for the custom
 build can be found above.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2568>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker


More information about the FFmpeg-trac mailing list