mplayer-devel segmentation fault when scaling

[migmit@…]

I've installed Lion a couple of days ago, then port-uninstalled everything, port-cleaned everything (with --all option), then port-selfupdated and reinstalled the stuff I need. Now every time I try to use "scale" filter, mencoder gives me "Segmentation fault". Mplayer, by the way, works fine. Mencodering without scaling works fine. I've tried different sources, got the same result.

Here is what happens when I run mencoder (with debug variant enabled) in GDB:

(gdb) run Dropbox/Public/G.avi -nosound -vf scale=480:320 -ovc x264 -o G.avi
Starting program: /opt/local/bin/mencoder Dropbox/Public/G.avi -nosound -vf scale=480:320 -ovc x264 -o G.avi
Reading symbols for shared libraries +++++++++++++++++++++++................................................................................................................................... done
MEncoder UNKNOWN-4.2.1 (C) 2000-2011 MPlayer Team
163 audio & 363 video codecs
success: format: 0  data: 0x0 - 0x723102
AVI file format detected.
[aviheader] Video stream found, -vid 0
VIDEO:  [XVID]  500x400  24bpp  30.000 fps  1513.3 kbps (184.7 kbyte/s)
[V] filefmt:3  fourcc:0x44495658  size:500x400  fps:30.000  ftime:=0.0333
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
Opening video filter: [scale w=480 h=320]
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Unsupported PixelFormat 61
Unsupported PixelFormat 53
Selected video codec: [ffodivx] vfm: ffmpeg (FFmpeg MPEG-4)
==========================================================================
[mpeg4 @ 0x10097b700]Invalid and inefficient vfw-avi packed B frames detected
Movie-Aspect is 1.25:1 - prescaling to correct movie aspect.
[swscaler @ 0x10096c820]BICUBIC scaler, from yuv420p to yuv420p using MMX2
x264 [info]: using SAR=5/6
x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64
x264 [info]: profile High, level 2.1
Pos:   0.0s      1f ( 0%)  0.00fps Trem:   0min   0mb  A-V:0.000 [0:0]
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x0000000122800000
0x0000000100187fd1 in yuv2yuvX_MMX2 ()

[migmit@…]

Sorry, forgot about formatting:

(gdb) run Dropbox/Public/G.avi -nosound -vf scale=480:320 -ovc x264 -o G.avi
Starting program: /opt/local/bin/mencoder Dropbox/Public/G.avi -nosound -vf scale=480:320 -ovc x264 -o G.avi
Reading symbols for shared libraries +++++++++++++++++++++++................................................................................................................................... done
MEncoder UNKNOWN-4.2.1 (C) 2000-2011 MPlayer Team
163 audio & 363 video codecs
success: format: 0  data: 0x0 - 0x723102
AVI file format detected.
[aviheader] Video stream found, -vid 0
VIDEO:  [XVID]  500x400  24bpp  30.000 fps  1513.3 kbps (184.7 kbyte/s)
[V] filefmt:3  fourcc:0x44495658  size:500x400  fps:30.000  ftime:=0.0333
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
Opening video filter: [scale w=480 h=320]
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Unsupported PixelFormat 61
Unsupported PixelFormat 53
Selected video codec: [ffodivx] vfm: ffmpeg (FFmpeg MPEG-4)
==========================================================================
[mpeg4 @ 0x10097b700]Invalid and inefficient vfw-avi packed B frames detected
Movie-Aspect is 1.25:1 - prescaling to correct movie aspect.
[swscaler @ 0x10096c820]BICUBIC scaler, from yuv420p to yuv420p using MMX2
x264 [info]: using SAR=5/6
x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64
x264 [info]: profile High, level 2.1
Pos:   0.0s      1f ( 0%)  0.00fps Trem:   0min   0mb  A-V:0.000 [0:0]
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x0000000122800000
0x0000000100187fd1 in yuv2yuvX_MMX2 ()

[macports@…]

I have the same issue. I found it goes away when compiling x264 without the +asm variant.

[jeremyhu@…]

Please provide a crash report. Your gdb log doesn't provide much information. If you're going to do this in gdb, please provide a backtrace of the crashed thread and the output of 'info files' so I can see what library the crashing frame is in. My guess from the previous comment is that it's in libx264.dylib, but that does not match up with the backtrace sine libx264.dylib doesn't seem to have a yuv2yuvX_MMX2 symbol on my system.

[jeremyhu@…]

So far, 2 people have complained that they have this issue, but neither has posted a crash log. There's nothing I can do without a crash log.

[macports@…]

Crash log

[jeremyhu@…]

Does this occur with mplayer 1.1? What about the current mplayer-devel (updated today)?

[jeremyhu@…]

No response, closing.

[macports@…]

Sorry for the delay. I am on OS X 10.8 now, and the crash still occurs both with mplayer 1.1 and mplayer-devel. Let me know what else you need to be able to fix this.

$ port installed mplayer The following ports are currently installed:

MPlayer @1.1_1+mencoder_extras+x264 (active)

and later: $ port installed mplayer-devel The following ports are currently installed:

mplayer-devel @35203_0+mencoder_extras+x264 (active)

$ port installed x264 The following ports are currently installed:

x264 @20111210_0 x264 @20111210_0+asm (active)

[jeremyhu@…]

Can you provide a sample video file that triggers this issue?

[macports@…]

It is triggered with any video file. I tried all avi samples on ​http://istec.colostate.edu/me/facil/dynamics/avis.htm and mencoder crashes on all of them.

$ mencoder drop.avi -nosound -vf scale=480:320 -ovc x264 -o out.avi
MEncoder UNKNOWN-4.2.1 (C) 2000-2012 MPlayer Team
198 audio & 412 video codecs
success: format: 0  data: 0x0 - 0xa5000
libavformat version 54.27.101 (internal)
AVI file format detected.
[aviheader] Video stream found, -vid 0
VIDEO:  [IV41]  256x240  24bpp  30.000 fps  882.5 kbps (107.7 kbyte/s)
[V] filefmt:3  fourcc:0x31345649  size:256x240  fps:30.000  ftime:=0.0333
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
Opening video filter: [scale w=480 h=320]
==========================================================================
Requested video codec family [indeo4] (vfm=vfw) not available.
Enable it at compilation.
Opening video decoder: [xanim] XAnim codecs
Movie-Aspect is undefined - no prescaling applied.
[swscaler @ 0x10cf02470]BICUBIC scaler, from yuv410p to yuv420p using MMX2
x264 [info]: using SAR=32/45
x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
x264 [info]: profile High, level 2.1
xacodec: failed to dlopen /opt/local/lib/codecs/vid_iv41.xa while dlopen(/opt/local/lib/codecs/vid_iv41.xa, 1): image not found
VDecoder init failed :(
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
libavcodec version 54.56.100 (internal)
Selected video codec: [ffindeo4] vfm: ffmpeg (FFmpeg Indeo 4)
==========================================================================
Movie-Aspect is undefined - no prescaling applied.
Segmentation fault: 111%)  0.00fps Trem:   0min   0mb  A-V:0.000 [0:0]

[jeremyhu@…]

Works for me... you'll need to provide more info...

~ $ wget http://istec.colostate.edu/me/facil/dynamics/files/drop.avi
--2012-09-28 16:22:12--  http://istec.colostate.edu/me/facil/dynamics/files/drop.avi
Resolving istec.colostate.edu (istec.colostate.edu)... 129.82.224.53
Connecting to istec.colostate.edu (istec.colostate.edu)|129.82.224.53|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 675840 (660K) [video/x-msvideo]
Saving to: ‘drop.avi’

100%[======================================>] 675,840      488KB/s   in 1.4s   

2012-09-28 16:22:14 (488 KB/s) - ‘drop.avi’ saved [675840/675840]


~ $ mencoder drop.avi -nosound -vf scale=480:320 -ovc x264 -o out.avi
MEncoder UNKNOWN-4.2.1 (C) 2000-2012 MPlayer Team
198 audio & 412 video codecs
success: format: 0  data: 0x0 - 0xa5000
libavformat version 54.27.101 (internal)
AVI file format detected.
[aviheader] Video stream found, -vid 0
VIDEO:  [IV41]  256x240  24bpp  30.000 fps  882.5 kbps (107.7 kbyte/s)
[V] filefmt:3  fourcc:0x31345649  size:256x240  fps:30.000  ftime:=0.0333
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
Opening video filter: [scale w=480 h=320]
==========================================================================
Requested video codec family [indeo4] (vfm=vfw) not available.
Enable it at compilation.
Opening video decoder: [xanim] XAnim codecs
Movie-Aspect is undefined - no prescaling applied.
[swscaler @ 0x1027bb210]BICUBIC scaler, from yuv410p to yuv420p using MMX2
x264 [info]: using SAR=32/45
x264 [info]: using cpu capabilities: none!
x264 [info]: profile High, level 2.1
xacodec: failed to dlopen /opt/local/lib/codecs/vid_iv41.xa while dlopen(/opt/local/lib/codecs/vid_iv41.xa, 1): image not found
VDecoder init failed :(
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
libavcodec version 54.56.100 (internal)
Selected video codec: [ffindeo4] vfm: ffmpeg (FFmpeg Indeo 4)
==========================================================================
Movie-Aspect is undefined - no prescaling applied.
Pos:   2.2s     67f (32%)  6.44fps Trem:   0min   0mb  A-V:0.000 [0:0]
Writing header...
ODML: vprp aspect is 16384:15359.
Writing header...
ODML: vprp aspect is 16384:15359.
Pos:   6.1s    182f (99%) 14.32fps Trem:   0min   0mb  A-V:0.000 [467:0]

Skipping frame!
Pos:   6.1s    183f (100%) 14.40fps Trem:   0min   0mb  A-V:0.000 [467:0]

Flushing video frames.
Writing index...
Writing header...
ODML: vprp aspect is 16384:15359.

Video stream:  743.474 kbit/s  (92934 B/s)  size: 563801 bytes  6.067 secs  183 frames
x264 [info]: frame I:1     Avg QP:24.92  size:  4192
x264 [info]: frame P:105   Avg QP:27.13  size:  3906
x264 [info]: frame B:76    Avg QP:28.28  size:  1966
x264 [info]: consecutive B-frames: 16.5% 83.5%  0.0%  0.0%
x264 [info]: mb I  I16..4: 13.0% 78.7%  8.3%
x264 [info]: mb P  I16..4:  3.7% 29.5%  4.6%  P16..4: 32.0% 14.3%  4.0%  0.0%  0.0%    skip:11.9%
x264 [info]: mb B  I16..4:  0.8%  3.2%  0.4%  B16..8: 27.3% 10.0%  2.7%  direct:12.5%  skip:43.0%  L0:38.6% L1:41.6% BI:19.8%
x264 [info]: 8x8 transform intra:77.7% inter:79.5%
x264 [info]: coded y,uvDC,uvAC intra: 71.4% 0.0% 0.0% inter: 33.6% 0.0% 0.0%
x264 [info]: i16 v,h,dc,p: 19% 55%  4% 22%
x264 [info]: i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  9% 41% 13%  3%  5%  3% 13%  3%  9%
x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu:  7% 50%  9%  3%  6%  3% 13%  3%  6%
x264 [info]: i8c dc,h,v,p: 100%  0%  0%  0%
x264 [info]: Weighted P-Frames: Y:77.1% UV:0.0%
x264 [info]: ref P L0: 49.7% 17.6% 16.6%  7.7%  8.4%
x264 [info]: ref B L0: 92.3%  7.7%
x264 [info]: kb/s:743.47

[jeremyhu@…]

My x264 port wasn't built with +asm, try x264 with -asm

[jeremyhu@…]

From the Portfile:

#
# intel assembler optimizations using yasm continue
# to exhibit problems in some cases (see #19835)
# disable by default but can be enabled using +asm variant for the adventurous
#

[macports@…]

Thanks, that's exactly what I said 7 months ago in comment:3. Bug #19835 is about x264 not building with +asm. This bug is about it crashing mencoder when scaling. Not really the same thing.