[FFmpeg-trac] #5738(avcodec:new): alac encoding regression

FFmpeg trac at avcodec.org
Tue Jul 26 19:12:03 EEST 2016


#5738: alac encoding regression
-------------------------------------+-------------------------------------
               Reporter:  cehoyos    |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  important  |              Component:  avcodec
                Version:  git-       |               Keywords:  alac crash
  master                             |  abort regression
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 Forum user madhartigan has reported an alac encoding regression since
 3ef5de0f19774e2c3dd9b08ba2e8ab7241a4862a
 {{{
 $ ffmpeg -i ph160628d1_09_Things_People_Do.flac -acodec alac -f null -
 ffmpeg version N-81118-gfb91850 Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 4.8 (SUSE Linux)
   configuration: --enable-gpl --enable-libvpx
   libavutil      55. 28.100 / 55. 28.100
   libavcodec     57. 50.100 / 57. 50.100
   libavformat    57. 44.100 / 57. 44.100
   libavdevice    57.  0.102 / 57.  0.102
   libavfilter     6. 49.100 /  6. 49.100
   libswscale      4.  1.100 /  4.  1.100
   libswresample   2.  1.100 /  2.  1.100
   libpostproc    54.  0.100 / 54.  0.100
 Input #0, flac, from 'ph160628d1_09_Things_People_Do.flac':
   Metadata:
     COMMENT         : powered by nugs.net
     ALBUM           : 2016/06/28 Philadelphia, PA
     COPYRIGHT       : 2015, Phish
     TITLE           : Things People Do
     URL             : http://www.livephish.com
     ARTIST          : Phish
     ALBUM ARTIST    : Phish
     ENCODER         : X Lossless Decoder 20151214
     ENCODEDBY       : nugs.net
     DATE            : 2016
     track           : 9
     disc            : 1
     GENRE           : Rock
   Duration: 00:02:49.32, start: 0.000000, bitrate: 963 kb/s
     Stream #0:0: Audio: flac, 44100 Hz, stereo, s16
     Stream #0:1: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown),
 1700x1700 [SAR 72:72 DAR 1:1], 90k tbr, 90k tbn, 90k tbc
     Metadata:
       comment         : 32x32 pixels 'file icon'
       title           : Enter description
 [null @ 0x22e4660] Using AVStream.codec to pass codec parameters to muxers
 is deprecated, use AVStream.codecpar instead.
     Last message repeated 1 times
 Output #0, null, to 'pipe:':
   Metadata:
     COMMENT         : powered by nugs.net
     ALBUM           : 2016/06/28 Philadelphia, PA
     COPYRIGHT       : 2015, Phish
     TITLE           : Things People Do
     URL             : http://www.livephish.com
     ARTIST          : Phish
     ALBUM ARTIST    : Phish
     GENRE           : Rock
     ENCODEDBY       : nugs.net
     DATE            : 2016
     track           : 9
     disc            : 1
     encoder         : Lavf57.44.100
     Stream #0:0: Video: wrapped_avframe, yuvj420p, 1700x1700 [SAR 72:72
 DAR 1:1], q=2-31, 200 kb/s, 90k fps, 90k tbn, 90k tbc
     Metadata:
       comment         : 32x32 pixels 'file icon'
       title           : Enter description
       encoder         : Lavc57.50.100 wrapped_avframe
     Stream #0:1: Audio: alac, 44100 Hz, stereo, s16p, 128 kb/s
     Metadata:
       encoder         : Lavc57.50.100 alac
 Stream mapping:
   Stream #0:1 -> #0:0 (mjpeg (native) -> wrapped_avframe (native))
   Stream #0:0 -> #0:1 (flac (native) -> alac (native))
 Press [q] to stop, [?] for help
 Internal error, put_bits buffer too small
 Assertion s->buf_ptr < s->buf_end failed at libavcodec/put_bits.h:108
 Aborted
 }}}
 Encoding works fine (and is bitexact on decoding with FFmpeg) if I disable
 the assert.
 The file can be found with Google and at
 https://www.datafilehost.com/d/c8c7d514

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5738>
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