[mythtv-users] another mythencode.pl error

[Rob Snow]

I agree is seems counter productive to do the deinterlace twice, 
but..again..I couldn't get a clear answer on if this was required or not, so 
I erred on the side of caution and did them the same.  By the way, the 
.avi's produced by this don't always work with Windows.  I have no idea why 
and it seems to happen regardless of the patch version/mencoder version 
used. 
 
I really hope we get a -real- way to transcode soon instead of my hack.  My 
wife and I like to pop a few shows on our laptops for when we travel and my 
parents like to be able to schedule to record something when they are 
traveling and be able to watch it when they return.  Of course all of this 
is done on Windows boxen, hence the hack of mythencode.pl. 
 
-Rob 
 
 
On Sat, 28 Jun 2003 07:02:01 -0500, mOjO wrote 
> what about the de-interlace option?  is it really necessary to  
> perform that twice? could it be harmful to do that twice? 
>  
> the mplayer documentation is nice but if it answered all my  
> questions it would be 5x longer!!  haha... 
>  
> mOjO 
>  
> p.s. i guess this transcoding stuff is coming out soon so this may  
> all be a moot point... 
>  
> Rob Snow wrote: 
>  
> > Oops, looks like thats a bug (vpass1/2).  I'll get a patch to fix it as 
soon  
> > as we get the next patch via CVS.  Robert was away this week and was 
going  
> > to apply the patch this weekend. 
> >  
> > vhq/v4mv: Actually, I'm not 100% certain either way.  From reading the  
> > mplayer/mencoder lists it appears you should include them in the first 
pass  
> > in some questing/replies and not in others.  I don't have a definative  
> > answer, but my intuition tells me (possibly wrongly :) that you want the  
> > statistics from a pass that matches what you are going to be encoding 
with. 
> >  
> > -Rob 
> >  
> >  
> > On Fri, 27 Jun 2003 03:11:11 -0500, mOjO wrote 
> >  
> >>i probably shoulnt be saying "another" error... since the first one  
> >>i posted was probably just specific to my version of NICE but this  
> >>one looks like a plain old goof of the "i'm really too tired to be  
> >>coding but i'm at it anyway variety"... 
> >> 
> >>Please take a look at the code pasted at the bottom of this email. 
> >>notice the options for the second pass down below... 
> >>both passes are running with vpass=1 
> >> 
> >>i'm not an expert on mencoder or anything but i read the docs and  
> >>the second pass should say vpass=2 right? 
> >> 
> >>i have a question also... if the vhq and v4mv options are being used  
> >>on the second pass should they be getting used on the first pass  
> >>too? or is that unneccessary? 
> >> 
> >>thanks, 
> >>mOjO 
> >> 
> >>p.s. i know this belongs on the dev mailing list but i'm not on that  
> >>one so deal with it :-P 
> >> 
> >>-- SNIP from mythtv-0.91/contrib/mythencode.pl -- 
> >> 
> >>} else { 
> >> 
> >>                   print "Doing a two pass encode.\n"; 
> >>                   $pass1="$nicestr $mencoder -idx $path$show.nuv - 
> >>fps $fps -oac mp3lame -lameopts vbr=3:br=$aud_br -ovc lavc -lavcopts  
> >>vcodec=mpeg4:vbitrate=$vid_br:vpass=1 -vop lavcdeint,$scale -aspect  
> >>4:3 -o $outname.avi";                   $pass2="$nicestr $mencoder  
> >>-idx $path$show.nuv -fps $fps -oac mp3lame -lameopts  
> >>vbr=3:br=$aud_br -ovc lavc -lavcopts  
> >>vcodec=mpeg4:vbitrate=$vid_br:vhq:v4mv:vpass=1 -vop lavcdeint,$scale  
> >>-aspect 4:3 -o $outname.avi";                   print "\tPASS ONE=$pass1 
> >  
> > \n"; 
> >  
> >>                   print "\tPASS TWO=$pass2\n"; 
> >> 
> >>                   if(!$test) { 
> >>                         exec $pass1; 
> >>                         exec $pass2; 
> >>                   } 
> >>} 
> >> 
> >>exit(0); 
> >> 
> >>-- EOF -- 
> >> 
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> >  
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