divx encoding vob files

Timothy Smith timothy at open-networks.net
Thu Jun 16 21:52:44 GMT 2005

Sergey Zaharchenko wrote:

>Hello Timothy!
>Thu, Jun 16, 2005 at 07:52:16PM +1000 you wrote:
>>i've been looking how to encode vob files into divx avi files, and 
>>without fail following any of the howto's i google resulted in failure.
>>i have mencoder installed, vobcopy. i have the vob files and they play 
>>perfectly. what do i need to execute to convert them into mpeg4 avi files?
>So you need to fit a DVD onto a CD;)
>Here's what I did. For each .vob file
>mencoder -oac lavc -ovc lavc -lavcopts \
>acodec=mp3:abitrate=192:vcodec=mpeg4:vbitrate=800 -vf scale=512:384 \
>-o your.avi your.vob \
>then concatenate the avi's 
>cat your1.avi your2.avi ... yourn.avi > all.avi
>and then fix the resulting avi with
>mencoder -idx all.avi -ovc copy -oac copy -o result.avi
it doesn't have to fit on a cd, just a single layer dvd. so only a small 
reduction in size is needed.
initally when i tried your command it errored whinging about not having 
a subfont.tff, so i just pointed it to a generic ttf i had, it then 
bombed out with this

mencoder -oac lavc -ovc lavc -lavcopts \
acodec=mp3:abitrate=192:vcodec=mpeg4:vbitrate=800 -font 
/usr/X11R6/lib/X11/fonts/bitstream-vera/Vera.ttf \
-o 1.avi  the_video_you_wanted1-1.vob \

Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
VDec: vo config request - 720 x 576 (preferred csp: Mpeg PES)
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
The selected video_out device is incompatible with this codec.
VDecoder init failed :(
Opening video decoder: [libmpeg2] MPEG 1/2 Video decoder libmpeg2-v0.4.0b
Selected video codec: [mpeg12] vfm:libmpeg2 (MPEG-1 or 2 (libmpeg2))
Building audio filter chain for 48000Hz/2ch/s16le -> 48000Hz/2ch/s16le...
Writing AVI header...
ODML: Aspect information not (yet?) available or unspecified, not 
writing vprp header.
VDec: vo config request - 720 x 576 (preferred csp: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
videocodec: libavcodec (720x576 fourcc=34504d46 [FMP4])
Illegal instruction (core dumped)Trem:   0min   0mb  A-V:0.004 [0:0]

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