id,summary,reporter,owner,description,type,status,priority,component,version,resolution,keywords,cc,blockedby,blocking,reproduced,analyzed
1422,combining audio and video filters crashes machine,atlithorn,,"Summary of the bug: if you combine overlay and amerge in a filter_complex statement then the machine will start eating memory as soon as the shortest input file is complete and ultimately bring down the machine. Tested on Ubuntu 12.04 and a Debian as well

How to reproduce:
{{{
ffmpeg -i test1.flv  -i test2.flv -filter_complex '[0:0]scale=iw/2:ih/2,pad=2*iw:ih[left];[1:0]scale=iw/2:ih/2[right];[left][right]overlay=main_w/2:0;[0:1][1:1] amerge' comb.flv
ffmpeg version N-36926-g02827a3 Copyright (c) 2000-2012 the FFmpeg developers
  built on Jun  5 2012 15:47:40 with gcc 4.6.3
  configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-version3 --enable-x11grab
  libavutil      51. 56.100 / 51. 56.100
  libavcodec     54. 23.100 / 54. 23.100
  libavformat    54.  6.101 / 54.  6.101
  libavdevice    54.  0.100 / 54.  0.100
  libavfilter     2. 78.100 /  2. 78.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
Input #0, flv, from 'test1.flv':
  Metadata:
    creationdate    : Thu Apr 26 14:03:11
  Duration: 00:12:07.70, start: 0.000000, bitrate: 341 kb/s
    Stream #0:0: Video: h264 (Baseline), yuv420p, 592x444 [SAR 1:1 DAR 4:3], 10 tbr, 1k tbn, 20 tbc
    Stream #0:1: Audio: nellymoser, 11025 Hz, mono, s16
Input #1, flv, from 'test2.flv':
  Metadata:
    creationdate    : Thu Apr 26 12:42:07
  Duration: 00:23:35.37, start: 0.000000, bitrate: 220 kb/s
    Stream #1:0: Video: h264 (Baseline), yuv420p, 592x444 [SAR 1:1 DAR 4:3], 10 tbr, 1k tbn, 20 tbc
    Stream #1:1: Audio: nellymoser, 11025 Hz, mono, s16
[0:0 @ 0xa627200] w:592 h:444 pixfmt:yuv420p tb:1/1000 sar:1/1 sws_param:flags=2
[1:0 @ 0xa5da160] w:592 h:444 pixfmt:yuv420p tb:1/1000 sar:1/1 sws_param:flags=2
[ffmpeg_buffersink @ 0xa6272a0] No opaque field provided
[Parsed_amerge_4 @ 0xa51d2e0] Inputs overlap: output layout will be meaningless
[Parsed_scale_0 @ 0xa51c260] w:592 h:444 fmt:yuv420p sar:1/1 -> w:296 h:222 fmt:yuv420p sar:1/1 flags:0x2
[Parsed_pad_1 @ 0xa6278c0] w:296 h:222 -> w:592 h:222 x:0 y:0 color:0x000000FF
[Parsed_scale_2 @ 0xa51d8e0] w:592 h:444 fmt:yuv420p sar:1/1 -> w:296 h:222 fmt:yuva420p sar:1/1 flags:0x2
[Parsed_overlay_3 @ 0xa51ce40] main w:592 h:222 fmt:yuv420p overlay x:296 y:0 w:296 h:222 fmt:yuva420p
[Parsed_overlay_3 @ 0xa51ce40] main_tb:1/1000 overlay_tb:1/1000 -> tb:1/1000 exact:1
[Parsed_amerge_4 @ 0xa51d2e0] in1:mono + in2:mono -> out:stereo
[flv @ 0xa512ac0] removing common factors from framerate
Output #0, flv, to 'comb.flv':
  Metadata:
    creationdate    : Thu Apr 26 14:03:11
    encoder         : Lavf54.6.101
    Stream #0:0: Video: flv1 ([2][0][0][0] / 0x0002), yuv420p, 592x222 [SAR 1:1 DAR 8:3], q=2-31, 200 kb/s, 1k tbn, 10 tbc
    Stream #0:1: Audio: mp3 ([2][0][0][0] / 0x0002), 11025 Hz, stereo, s16
Stream mapping:
  Stream #0:0 (h264) -> scale
  Stream #0:1 (nellymoser) -> amerge:in1
  Stream #1:0 (h264) -> scale
  Stream #1:1 (nellymoser) -> amerge:in2
  overlay -> Stream #0:0 (flv)
  amerge -> Stream #0:1 (libmp3lame)
}}}

This bug is mentioned in comments to #1400 but I thought it warranted its own ticket.",defect,closed,normal,undetermined,git-master,fixed,,,,,1,1