[FFmpeg-trac] #2096(avcodec:open): Audio glitches when converting from flv/f4v - regression from previous verisons

[FFmpeg]

#2096: Audio glitches when converting from flv/f4v - regression from previous
verisons
-------------------------------------+-------------------------------------
             Reporter:  kirill_p     |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  important    |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  regression   |               Blocked By:
  speex                              |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by cehoyos):

 * keywords:  audio glitches,flv,f4v,speex => regression speex
 * priority:  normal => important
 * status:  new => open
 * component:  FFmpeg => avcodec
 * reproduced:  0 => 1


Comment:

 Regression since 0f1446a.
 {{{
 $ ffmpeg -i m.f4v out.mp2
 ffmpeg version N-48393-g8bc7422 Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Jan  2 2013 11:23:54 with gcc 4.7 (SUSE Linux)
   configuration: --enable-libspeex
   libavutil      52. 13.100 / 52. 13.100
   libavcodec     54. 85.100 / 54. 85.100
   libavformat    54. 59.100 / 54. 59.100
   libavdevice    54.  3.102 / 54.  3.102
   libavfilter     3. 30.102 /  3. 30.102
   libswscale      2.  1.103 /  2.  1.103
   libswresample   0. 17.102 /  0. 17.102
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'm.f4v':
   Metadata:
     major_brand     : f4v
     minor_version   : 0
     compatible_brands: isommp42m4v
     creation_time   : 2033-12-20 03:47:04
   Duration: 00:00:32.06, start: 0.000000, bitrate: 768 kb/s
     Stream #0:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p,
 640x480 [SAR 1:1 DAR 4:3], 732 kb/s, 29.88 fps, 30 tbr, 1k tbn, 60 tbc
     Metadata:
       creation_time   : 2033-12-20 03:47:04
       handler_name    : MainConcept
     Stream #0:1(eng): Audio: speex (spex / 0x78657073), 16000 Hz, mono,
 s16, 17 kb/s
     Metadata:
       creation_time   : 2033-12-20 03:47:04
       handler_name    : Speex Handler
     Stream #0:2(eng): Data: none (amf0 / 0x30666D61)
     Metadata:
       creation_time   : 2033-12-20 03:47:04
       handler_name    : Timed Metadata Handler
 Output #0, mp2, to 'out.mp2':
   Metadata:
     major_brand     : f4v
     minor_version   : 0
     compatible_brands: isommp42m4v
     encoder         : Lavf54.59.100
     Stream #0:0(eng): Audio: mp2, 16000 Hz, mono, s16, 128 kb/s
     Metadata:
       creation_time   : 2033-12-20 03:47:04
       handler_name    : Speex Handler
 Stream mapping:
   Stream #0:1 -> #0:0 (libspeex -> mp2)
 Press [q] to stop, [?] for help
 size=     507kB time=00:00:32.12 bitrate= 129.4kbits/s
 video:0kB audio:507kB subtitle:0 global headers:0kB muxing overhead
 0.000000%
 }}}
 out.mp2 contains audible distortions.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2096#comment:2>
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