[FFmpeg-trac] #1055(avcodec:open): Playing wmalossless/decoding it to mp3 there is a loud noise at the end of the file

[FFmpeg]

#1055: Playing wmalossless/decoding it to mp3 there is a loud noise at the end of
the file
-------------------------------------+-----------------------------------
             Reporter:  bfo          |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  wmalossless  |               Blocked By:
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |
-------------------------------------+-----------------------------------
Changes (by cehoyos):

 * keywords:  wma wmalossless convert noise => wmalossless
 * status:  new => open
 * version:  unspecified => git-master
 * component:  FFmpeg => avcodec
 * reproduced:  0 => 1


Comment:

 For future bug reports: Please do not use other software (in your case
 libmp3lame) to test ffmpeg if this is not necessary; for audio decoding
 reports, I believe decoding to wav is preferred.
 Attaching the output file is usually not necessary.

 out.wav has the described severe audible artefacts after 30 seconds.
 {{{
 $ ffmpeg -i 03_Track_3.wma out.wav
 ffmpeg version N-38726-gad029c2 Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Mar 11 2012 16:49:53 with gcc 4.3.2
   configuration: --cc=/usr/local/gcc-4.3.2/bin/gcc --enable-gpl
   libavutil      51. 42.100 / 51. 42.100
   libavcodec     54. 10.100 / 54. 10.100
   libavformat    54.  2.100 / 54.  2.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 64.101 /  2. 64.101
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0.  7.100 /  0.  7.100
   libpostproc    52.  0.100 / 52.  0.100
 Input #0, asf, from '03_Track_3.wma':
   Metadata:
     WM/MediaPrimaryClassID: {D1607DBC-E323-4BE2-86A1-48A42A28441E}
     WMFSDKVersion   : 11.0.5721.5275
     WMFSDKNeeded    : 0.0.0.0000
     WM/EncodingTime : 1844674
     PeakValue       : 292
     AverageLevel    : 396
     track           : 3
     WM/UniqueFileIdentifier: ;
     WM/Provider     : User Feedback
     album           : Schritte International 5
     album_artist    : Hueber
     genre           : Miscellaneous
     IsVBR           : 1
     MediaFoundationVersion: 2.112
     title           : Track 3
     artist          : Hueber
   Duration: 00:00:31.98, start: 0.000000, bitrate: 618 kb/s
     Stream #0:0(eng): Audio: wmalossless (c[1][0][0] / 0x0163), 44100 Hz,
 stereo, s16, 1152 kb/s
 Output #0, wav, to 'out.wav':
   Metadata:
     WM/MediaPrimaryClassID: {D1607DBC-E323-4BE2-86A1-48A42A28441E}
     WMFSDKVersion   : 11.0.5721.5275
     WMFSDKNeeded    : 0.0.0.0000
     WM/EncodingTime : 1844674
     PeakValue       : 292
     AverageLevel    : 396
     track           : 3
     WM/UniqueFileIdentifier: ;
     WM/Provider     : User Feedback
     album           : Schritte International 5
     album_artist    : Hueber
     genre           : Miscellaneous
     IsVBR           : 1
     MediaFoundationVersion: 2.112
     title           : Track 3
     artist          : Hueber
     encoder         : Lavf54.2.100
     Stream #0:0(eng): Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz,
 stereo, s16, 1411 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (wmalossless -> pcm_s16le)
 Press [q] to stop, [?] for help
 Multiple frames in a packet from stream 0
 DTS 1346, next:1484512 st:0 invalid droping
 DTS 1532, next:1716707 st:0 invalid droping
 DTS 1717, next:1902463 st:0 invalid droping
 DTS 1856, next:2088219 st:0 invalid droping
 DTS 2043, next:2227536 st:0 invalid droping

 ...

 DTS 27120, next:27258157 st:0 invalid droping
 DTS 27306, next:27490352 st:0 invalid droping
 DTS 27538, next:27676108 st:0 invalid droping
 DTS 27770, next:27908303 st:0 invalid droping
 DTS 28002, next:28140498 st:0 invalid droping
 DTS 28281, next:28372693 st:0 invalid droping
 size=    5384kB time=00:00:31.25 bitrate=1411.2kbits/s
 video:0kB audio:5384kB global headers:0kB muxing overhead 0.000834%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1055#comment:2>
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