id	summary	reporter	owner	description	type	status	priority	component	version	resolution	keywords	cc	blockedby	blocking	reproduced	analyzed
1400	Segfault, using -filter_complex	burek		"Summary of the bug:
When running the following command line, a segmentation fault message appeared:

{{{
$ ffmpeg -i 1.flv -i 2.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' out.flv
ffmpeg version N-41142-g8f61526 Copyright (c) 2000-2012 the FFmpeg developers
  built on May 30 2012 13:40:37 with gcc 4.6.3
  configuration: --enable-static --enable-shared --enable-gpl --enable-nonfree --enable-postproc --enable-libx264 --enable-libaacplus --enable-libmp3lame --enable-libopenjpeg --enable-zlib
  libavutil      51. 55.100 / 51. 55.100
  libavcodec     54. 23.100 / 54. 23.100
  libavformat    54.  6.101 / 54.  6.101
  libavdevice    54.  0.100 / 54.  0.100
  libavfilter     2. 77.100 /  2. 77.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
[h264 @ 0x9797680] reference picture missing during reorder
    Last message repeated 3 times
[h264 @ 0x9797680] Missing reference picture
[h264 @ 0x9797680] decode_slice_header error
[h264 @ 0x9797680] concealing 576 DC, 576 AC, 576 MV errors
[h264 @ 0x9797680] reference picture missing during reorder
    Last message repeated 1 times
[h264 @ 0x9797680] Missing reference picture
    Last message repeated 1 times
[h264 @ 0x9797680] reference picture missing during reorder
[h264 @ 0x9797680] Missing reference picture
Input #0, flv, from '1.flv':
  Metadata:
    encoder         : Lavf54.0.100
  Duration: 00:15:04.99, start: 0.000000, bitrate: 157 kb/s
    Stream #0:0: Video: h264 (High), yuv420p, 512x288 [SAR 3:4 DAR 4:3], 250 tbr, 1k tbn, 50 tbc
    Stream #0:1: Audio: aac, 44100 Hz, stereo, s16
[h264 @ 0x9798da0] reference picture missing during reorder
    Last message repeated 3 times
[h264 @ 0x9798da0] Missing reference picture
[h264 @ 0x9798da0] decode_slice_header error
[h264 @ 0x9798da0] concealing 576 DC, 576 AC, 576 MV errors
[h264 @ 0x9798da0] reference picture missing during reorder
    Last message repeated 1 times
[h264 @ 0x9798da0] Missing reference picture
    Last message repeated 1 times
[h264 @ 0x9798da0] reference picture missing during reorder
[h264 @ 0x9798da0] Missing reference picture
Input #1, flv, from '2.flv':
  Metadata:
    encoder         : Lavf53.31.100
  Duration: 00:15:00.49, start: 0.000000, bitrate: 431 kb/s
    Stream #1:0: Video: h264 (High), yuv420p, 512x288 [SAR 3:4 DAR 4:3], 50 tbr, 1k tbn, 50 tbc
    Stream #1:1: Audio: aac, 44100 Hz, stereo, s16
[buffer @ 0x9ae4b40] w:512 h:288 pixfmt:yuv420p tb:1/1000 sar:3/4 sws_param:flags=2
[buffer @ 0x98ab100] w:512 h:288 pixfmt:yuv420p tb:1/1000 sar:3/4 sws_param:flags=2
[buffersink @ 0x9ae4a40] No opaque field provided
No channel layout for input 1
Segmentation fault
}}}

(warnings about ""reference picture"" are due to live capturing of h264 stream, so some starting key frames are missing I guess, but both videos play normally)"	defect	closed	normal	avfilter	unspecified	fixed	crash				0	0