[FFmpeg-trac] #5826(undetermined:new): Samplerate is wrong when M4A ALAC file converted to WAVE

[FFmpeg]

#5826: Samplerate is wrong when M4A ALAC file converted to WAVE
-------------------------------------+-------------------------------------
             Reporter:  liuwei       |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 When using newest git ffmpeg to convert a 96K samplerate alac m4a file to
 wav，the wav samplerate is 48K.
 But ffmpeg-2.7.2 is ok.

 ./ffmpeg -i 2L50SACD_tr01_multi_96.m4a test.wav


 git version 1.7.2.5

 This is newest ffmpeg log:
 ./ffmpeg -i 2L50SACD_tr01_multi_96.m4a
 ffmpeg version N-81555-g496d97f Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 4.4.5 (Debian 4.4.5-8)
   configuration: --prefix=/home/liuw/open_source/ffmpeg_git/ --enable-
 debug --disable-optimizations --disable-yasm --disable-asm --disable-
 pthreads
   libavutil      55. 29.100 / 55. 29.100
   libavcodec     57. 54.102 / 57. 54.102
   libavformat    57. 48.102 / 57. 48.102
   libavdevice    57.  0.102 / 57.  0.102
   libavfilter     6. 60.100 /  6. 60.100
   libswscale      4.  1.100 /  4.  1.100
   libswresample   2.  1.100 /  2.  1.100
 [alac @ 0xb45e470] Warning: not compiled with thread support, using thread
 emulation
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '2L50SACD_tr01_multi_96.m4a':
   Metadata:
     major_brand     : M4A
     minor_version   : 0
     compatible_brands: M4A mp42isom
     creation_time   : 2016-09-05T07:34:08.000000Z
     track           : 1/11
     disc            : 1/1
     album           : DIVERTIMENTI
     album_artist    : TrondheimSolistene
     artist          : TrondheimSolistene
     comment         : 2L50SACD All rights reserved Lindberg Lyd AS, Norway
     composer        : Benjamin Britten
     PERFORMER       : TrondheimSolistene
     title           : Britten: Simple Symphony 1
     encoder         : refalac 1.13, Apple Lossless Encoder
     date            : 14.04.2008
   Duration: 00:03:01.75, start: 0.000000, bitrate: 6873 kb/s
     Stream #0:0(und): Audio: alac (alac / 0x63616C61), 48000 Hz, 5.1, s32p
 (24 bit), 6872 kb/s (default)
     Metadata:
       creation_time   : 2016-09-05T07:34:08.000000Z


 This is ffmpeg-2.7.2 log:
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '2L50SACD_tr01_multi_96.m4a':
   Metadata:
     major_brand     : M4A
     minor_version   : 0
     compatible_brands: M4A mp42isom
     creation_time   : 2016-09-05 07:34:08
     track           : 1/11
     disc            : 1/1
     album           : DIVERTIMENTI
     album_artist    : TrondheimSolistene
     artist          : TrondheimSolistene
     comment         : 2L50SACD All rights reserved Lindberg Lyd AS, Norway
     composer        : Benjamin Britten
     PERFORMER       : TrondheimSolistene
     title           : Britten: Simple Symphony 1
     encoder         : refalac 1.13, Apple Lossless Encoder
     date            : 14.04.2008
   Duration: 00:03:01.75, start: 0.000000, bitrate: 6873 kb/s
     Stream #0:0(und): Audio: alac (alac / 0x63616C61), 96000 Hz, 5.1, s32p
 (24 bit), 6872 kb/s (default)
     Metadata:
       creation_time   : 2016-09-05 07:34:08

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5826>
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