[FFmpeg-trac] #594(undetermined:new): Combination of transpose, scale, pad filters results in segfault

[FFmpeg]

#594: Combination of transpose, scale, pad filters results in segfault
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             Reporter:  ignat         |                     Type:  defect
               Status:  new           |                 Priority:  normal
            Component:  undetermined  |                  Version:  0.8.5
             Keywords:                |               Blocked By:
             Blocking:                |  Reproduced by developer:  0
Analyzed by developer:  0             |
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 Hi,

 when I am trying to execute following transcode I receive segmentation
 fault.

 ( I am trying to rotate initial video and then scale it down, adding two
 equal vertical black stripes on the left and right).

 What is most peculiar is that if I change pad to pad=152,270,0,0 this
 segfault does not happen.

 Please find ffmpeg output below:

 ffmpeg -v 9 -loglevel 99 -i rotation_-90.MOV -vcodec libx264 -r 20 -b 768k
 -bt 768k -vf transpose=3,scale=152:270,pad=480:270:164:0 -s 480x270 -an
 -preset medium -fastfirstpass 1 -profile baseline -pass 1 -passlogfile
 result.mp4.passlogfile -f rawvideo -y /dev/null
 ffmpeg version 0.8.5, Copyright (c) 2000-2011 the FFmpeg developers
   built on Oct 17 2011 15:23:13 with gcc 4.1.2 20071124 (Red Hat 4.1.2-42)
   configuration: --prefix=/usr/local/media-utils --enable-libx264
 --enable-libmp3lame --enable-shared --enable-libfaac --enable-libopencore-
 amrnb --enable-libopencore-amrwb --enable-small --disable-ffserver
 --disable-ffplay --enable-memalign-hack --enable-gpl --enable-pthreads
 --extra-cflags=-I/usr/local/media-utils/include --extra-
 ldflags=-L/usr/local/media-utils/lib --enable-nonfree --enable-version3
 --disable-decoder=amrnb
   libavutil    51.  9. 1 / 51.  9. 1
   libavcodec   53.  7. 0 / 53.  7. 0
   libavformat  53.  4. 0 / 53.  4. 0
   libavdevice  53.  1. 1 / 53.  1. 1
   libavfilter   2. 23. 0 /  2. 23. 0
   libswscale    2.  0. 0 /  2.  0. 0
   libpostproc  51.  2. 0 / 51.  2. 0
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x92b83a0] Format mov,mp4,m4a,3gp,3g2,mj2
 probed with size=2048 and score=100
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x92b83a0] ISO: File Type Major Brand: qt
 [h264 @ 0x92baa60] Unsupported bit depth: 0
 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x92b83a0] All info found

 Seems stream 0 codec frame rate differs from container frame rate: 1200.00
 (1200/1) -> 29.97 (30000/1001)
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'rotation_-90.MOV':
   Metadata:
     major_brand     : qt
     minor_version   : 0
     compatible_brands: qt
     creation_time   : 2011-10-25 10:56:51
     encoder         : 5.0
     encoder-eng     : 5.0
     date            : 2011-10-25T11:56:51+0100
     date-eng        : 2011-10-25T11:56:51+0100
   Duration: 00:00:06.84, start: 0.000023, bitrate: 10871 kb/s
     Stream #0.0(und), 41, 1/600: Video: h264, yuv420p, 1280x720, 1/1200,
 10815 kb/s, 29.97 fps, 29.97 tbr, 600 tbn, 1200 tbc
     Metadata:
       creation_time   : 2011-10-25 10:56:51
     Stream #0.1(und), 101, 1/44100: Audio: aac, 44100 Hz, mono, s16, 63
 kb/s
     Metadata:
       creation_time   : 2011-10-25 10:56:51
 [buffer @ 0x92c05e0] w:1280 h:720 pixfmt:yuv420p tb:1/1000000 sar:0/1
 sws_param:
 [scale @ 0x92bd620] w:1280 h:720 fmt:yuv420p -> w:480 h:270 fmt:yuv420p
 flags:0x4
 [transpose @ 0x92b75c0] w:480 h:270 dir:3 -> w:270 h:480
 rotation:clockwise vflip:1
 [scale @ 0x92b7540] w:270 h:480 fmt:yuv420p -> w:152 h:270 fmt:yuv420p
 flags:0x4
 [pad @ 0x92b7cc0] w:152 h:270 -> w:480 h:270 x:164 y:0
 color:0x108080FF[yuva]
 [libx264 @ 0x92bdda0] using cpu capabilities: MMX2 SSE2Fast SSSE3
 FastShuffle SSE4.1 Cache64
 [libx264 @ 0x92bdda0] profile Constrained Baseline, level 2.1
 Output #0, rawvideo, to '/dev/null':
   Metadata:
     major_brand     : qt
     minor_version   : 0
     compatible_brands: qt
     creation_time   : 2011-10-25 10:56:51
     date-eng        : 2011-10-25T11:56:51+0100
     encoder-eng     : 5.0
     date            : 2011-10-25T11:56:51+0100
     encoder         : Lavf53.4.0
     Stream #0.0(und), 0, 1/90000: Video: libx264, yuv420p, 480x270, 1/20,
 q=2-31, pass 1, 768 kb/s, 90k tbn, 20 tbc
     Metadata:
       creation_time   : 2011-10-25 10:56:51
 Stream mapping:
   Stream #0.0 -> #0.0
 Press [q] to stop, [?] for help
 Segmentation fault

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/594>
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