[MEncoder-users] VHS capturing 2 avi

Allen lists at iisys.com.au
Fri Dec 16 23:40:43 CET 2005


> > 
> > Here is my command to then turn the above capture into a SVCD
> > mencoder -oac lavc -ovc lavc -of mpeg -mpegopts format=xsvcd -vf
> > scale=480:288,harddup -srate 44100 -lavcopts
> > vcodec=mpeg2video:mbd=2:keyint=15:vrc_buf_size=917:vrc_minrate=600:vbitrate=2500:vrc_maxrate=2500:acodec=mp2:abitrate=224 -ofps 25 -endpos 180 -o shrek.mpg shrek.avi

Sorry, I pasted in the wrong command.

mencoder -oac lavc -ovc lavc -of mpeg -mpegopts format=xsvcd -vf harddup
-srate 44100 -lavcopts
vcodec=mpeg2video:mbd=2:keyint=15:vrc_buf_size=917:vrc_minrate=1800:vbitrate=2500:vrc_maxrate=2500:acodec=mp2:abitrate=224 -ofps 25 -endpos 800mb -o ptf-10-SVCD.mpg ptf-10-900.avi

No scaling involved.  And my understanding is that I can crop, as long
as the dimensions are divisible by 16.  My generic DVD player plays the
720x576 SVCD content without any problem.

> svcd is 576 pixels high, not 288.. If this works on your player you
> got especially lucky..

Well, it did work.  But of course you are perfectly right that
interlaced should be at 576 pixels high. 

> Anyway if you're going to converto to single-field, you should just
> capture single-field to begin with. Don't bother capturing interlaced.
> And also don't use scale on interlaced content unless you know how to
> do it..

No, I want to keep interlaced if I can, because for the foreseeable
future, I'll only be playing back on a TV.  In the future, when large
LCD monitors become cheap enough to replace my TV, I'll re-encode the
movies accordingly.

The combination of my previous capture command, and the "corrected"
encoding command gives me near perfect SVCD-quality playback on TV of a
vhs tape.  

> Some RTFM is probably in order.. :)

I know :)  There are just so many options and many of the explanations
are a bit terse.  But I'll keep reading, experimenting, and looking for
suggestions wherever I can find them.

Thanks again,


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