[MEncoder-users] Mencoder bug on ARM

alesan at manoweb.com alesan at manoweb.com
Sun Jul 1 18:41:21 CEST 2007

Hi, I have compiled mencoder on a linksys NSLU2 (200MHz ARM
CPU, 32MB ram, 500GB hdd). I tried to encode few pictures in
a video:

# mencoder mf://*.jpg -mf w=720:h=540:fps=25:type=jpg -ovc
lavc -lavcopts vcodec=mpeg4 -o test2.avi
MEncoder dev-SVN-rUNKNOWN-4.1.2 (C) 2000-2007 MPlayer Team
success: format: 16  data: 0x0 - 0x0
MF file format detected.
[mf] search expr: *.jpg
[mf] number of files: 7 (28)
VIDEO:  [IJPG]  720x540  24bpp  25.000 fps    0.0 kbps ( 0.0
[V] filefmt:16  fourcc:0x47504A49  size:720x540  fps:25.00 
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec
Selected video codec: [ffmjpeg] vfm: ffmpeg (FFmpeg MJPEG
VDec: vo config request - 720 x 540 (preferred colorspace:
Planar 422P)
Could not find matching colorspace - retrying with -vf
Opening video filter: [scale]
VDec: using Planar 422P as output csp (no 1)
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
SwScaler: reducing / aligning filtersize 1 -> 1
SwScaler: reducing / aligning filtersize 1 -> 1
SwScaler: reducing / aligning filtersize 1 -> 1
SwScaler: reducing / aligning filtersize 9 -> 8
[swscaler @ 0x608118]SwScaler: BICUBIC scaler, from yuv422p
to yuv420p using C
[swscaler @ 0x608118]SwScaler: using C scaler for horizontal
[swscaler @ 0x608118]SwScaler: using 1-tap C "scaler" for
vertical scaling (YV12 like)
[swscaler @ 0x608118]SwScaler: 720x540 -> 720x540
videocodec: libavcodec (720x540 fourcc=34504d46 [FMP4])
Illegal instruction

How can I proceed to debug this? The same works ok on a
standard PC.
In few words, I would like to batch encode images from my
digital camera:
and automatically upload the "time-lapse" videos on the
internet. Until now I used a x86-64 pc:

Thank you

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