[FFmpeg-trac] #2425(avcodec:open): [regression] Smacker audio played with clicks

FFmpeg trac at avcodec.org
Tue Apr 2 23:45:21 CEST 2013


#2425: [regression] Smacker audio played with clicks
-------------------------------------+-------------------------------------
             Reporter:  Sergey       |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  important    |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  regression   |               Blocked By:
  smacker                            |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by cehoyos):

 * status:  new => open
 * reproduced:  0 => 1


Comment:

 Output file contains audible distortions, works fine with dec354b and
 FFmpeg 0.8.
 {{{
 $ ffmpeg -i 20130402_vc-error_sound-clicks.smk -ss 19 -t 10 out.wav
 ffmpeg version N-51524-gccc2537 Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Apr  2 2013 23:34:39 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl --disable-indev=jack
   libavutil      52. 24.100 / 52. 24.100
   libavcodec     55.  2.100 / 55.  2.100
   libavformat    55.  1.100 / 55.  1.100
   libavdevice    55.  0.100 / 55.  0.100
   libavfilter     3. 48.105 /  3. 48.105
   libswscale      2.  2.100 /  2.  2.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  2.100 / 52.  2.100
 [smk @ 0x1931f80] max_analyze_duration 5000000 reached at 5066160
 microseconds
 Input #0, smk, from '20130402_vc-error_sound-clicks.smk':
   Duration: 00:00:52.46, start: 0.000000, bitrate: 1843 kb/s
     Stream #0:0: Video: smackvideo (SMK2 / 0x324B4D53), pal8, 320x308, 15
 fps, 15 tbr, 15 tbn, 15 tbc
     Stream #0:1: Audio: smackaudio (SMKA / 0x414B4D53), 22050 Hz, stereo,
 s16
 Output #0, wav, to 'out.wav':
   Metadata:
     ISFT            : Lavf55.1.100
     Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 22050 Hz,
 stereo, s16, 705 kb/s
 Stream mapping:
   Stream #0:1 -> #0:0 (smackaud -> pcm_s16le)
 Press [q] to stop, [?] for help
 size=     861kB time=00:00:10.06 bitrate= 701.1kbits/s
 video:0kB audio:861kB subtitle:0 global headers:0kB muxing overhead
 0.009071%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2425#comment:3>
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