[FFmpeg-trac] #5326(avfilter:new): amix returns oom although memory is still available

[FFmpeg]

#5326: amix returns oom although memory is still available
-------------------------------------+-------------------------------------
               Reporter:  cehoyos    |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  important  |              Component:  avfilter
                Version:  git-       |               Keywords:  amix
  master                             |  regression
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 http://thread.gmane.org/gmane.comp.video.ffmpeg.user/61613
 A user provided a testcase that (changes file output and) shows a spurious
 error message since a08fb398
 {{{
 $ ffmpeg -i in_cut.mp4 -i in.m4a -filter_complex "[0:a][1:a]amix[outA]"
 -map 0:0 -map [outA] -qscale 2 out.mov
 ffmpeg version N-79000-g66edd86 Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl
   libavutil      55. 19.100 / 55. 19.100
   libavcodec     57. 28.100 / 57. 28.100
   libavformat    57. 28.101 / 57. 28.101
   libavdevice    57.  0.101 / 57.  0.101
   libavfilter     6. 39.102 /  6. 39.102
   libswscale      4.  0.100 /  4.  0.100
   libswresample   2.  0.101 /  2.  0.101
   libpostproc    54.  0.100 / 54.  0.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'in_cut.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2mp41
     title           : LP 37
     date            : 2016-03-10
     encoder         : Lavf57.28.101
   Duration: 00:00:05.02, start: 0.000000, bitrate: 3811 kb/s
     Stream #0:0(eng): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D),
 yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 3579 kb/s, 60 fps, 60 tbr, 15360
 tbn, 60 tbc (default)
     Metadata:
       handler_name    : VideoHandler
     Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
 stereo, fltp, 221 kb/s (default)
     Metadata:
       handler_name    : SoundHandler
 Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'in.m4a':
   Metadata:
     major_brand     : M4A
     minor_version   : 512
     compatible_brands: isomiso2
     title           : LP 37
     date            : 2016-03-10
     encoder         : Lavf57.27.100
   Duration: 00:00:05.02, start: 0.021333, bitrate: 131 kb/s
     Stream #1:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
 stereo, fltp, 128 kb/s (default)
     Metadata:
       handler_name    : SoundHandler
 Please use -q:a or -q:v, -qscale is ambiguous
 Output #0, mov, to 'out.mov':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2mp41
     title           : LP 37
     date            : 2016-03-10
     encoder         : Lavf57.28.101
     Stream #0:0(eng): Video: mpeg4 (mp4v / 0x7634706D), yuv420p, 1920x1080
 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 60 fps, 15360 tbn, 60 tbc (default)
     Metadata:
       handler_name    : VideoHandler
       encoder         : Lavc57.28.100 mpeg4
     Side data:
       cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
     Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo,
 fltp, 128 kb/s (default)
     Metadata:
       encoder         : Lavc57.28.100 aac
 Stream mapping:
   Stream #0:1 (aac) -> amix:input0 (graph 0)
   Stream #1:0 (aac) -> amix:input1 (graph 0)
   Stream #0:0 -> #0:0 (mpeg4 (native) -> mpeg4 (native))
   amix (graph 0) -> Stream #0:1 (aac)
 Press [q] to stop, [?] for help
 Error while filtering: Cannot allocate memory
 frame=  301 fps=276 q=2.0 Lsize=    4106kB time=00:00:05.01
 bitrate=6705.1kbits/s speed= 4.6x
 video:4020kB audio:79kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.170816%
 [aac @ 0x2213940] Qavg: 8620.615
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/5326>
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