[FFmpeg-trac] #3853(undetermined:new): silence in front of generated audio mpegts

[FFmpeg]

#3853: silence in front of generated audio mpegts
-------------------------------------+-------------------------------------
             Reporter:  mpapp        |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by mpapp):

 ../ffmpeg/ffprobe mpegtswithaudioonly.ts  -show_frames | grep audio | wc
 -l
 ffprobe version N-60562-g3e8b17f Copyright (c) 2007-2014 the FFmpeg
 developers
   built on Aug 13 2014 14:34:41 with gcc 4.4.7 (GCC) 20120313 (Red Hat
 4.4.7-4)
   configuration: --enable-libmp3lame --enable-pthreads --extra-
 cflags='-fPIC -m64' --enable-libx264 --enable-gpl
   libavutil      52. 63.101 / 52. 63.101
   libavcodec     55. 52.100 / 55. 52.100
   libavformat    55. 32.100 / 55. 32.100
   libavdevice    55.  9.100 / 55.  9.100
   libavfilter     4.  1.102 /  4.  1.102
   libswscale      2.  5.101 /  2.  5.101
   libswresample   0. 17.104 /  0. 17.104
   libpostproc    52.  3.100 / 52.  3.100
 [aac @ 0x36c6240] Estimating duration from bitrate, this may be inaccurate
 Input #0, aac, from 'mpegtswithaudioonly.ts':
   Duration: 00:00:05.15, bitrate: 125 kb/s
     Stream #0:0: Audio: aac, 44100 Hz, stereo, fltp, 125 kb/s
 216
 It has 216 frames

  ../ffmpeg/ffprobe audio.ts  -show_frames | grep audio | wc -l
 ffprobe version N-60562-g3e8b17f Copyright (c) 2007-2014 the FFmpeg
 developers
   built on Aug 13 2014 14:34:41 with gcc 4.4.7 (GCC) 20120313 (Red Hat
 4.4.7-4)
   configuration: --enable-libmp3lame --enable-pthreads --extra-
 cflags='-fPIC -m64' --enable-libx264 --enable-gpl
   libavutil      52. 63.101 / 52. 63.101
   libavcodec     55. 52.100 / 55. 52.100
   libavformat    55. 32.100 / 55. 32.100
   libavdevice    55.  9.100 / 55.  9.100
   libavfilter     4.  1.102 /  4.  1.102
   libswscale      2.  5.101 /  2.  5.101
   libswresample   0. 17.104 /  0. 17.104
   libpostproc    52.  3.100 / 52.  3.100
 Input #0, mpegts, from 'audio.ts':
   Duration: 00:00:04.88, start: 1.400000, bitrate: 151 kb/s
   Program 1
     Metadata:
       service_name    : Service01
       service_provider: FFmpeg
     Stream #0:0[0x100]: Audio: aac ([15][0][0][0] / 0x000F), 44100 Hz,
 stereo, fltp, 122 kb/s
 217
 It has 217 frames

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3853#comment:5>
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