[MPlayer-users] Re: where is the extra information file created for

[Vijay gill]

Hi Rainer,

    Thanks for pointing that out about missing -lavcopts. I fixed that last
night, which means it had not been working for me at all before that. I am
amazed at the quality I got with default values! But now I have more
questions to ask

1)    I use lavccodec with mpeg4 as codec : How do the pass 1 and pass 2
work in this case? Like if there is some log file generated by pass 1 to be
used in pass 2, where does it go? Is it created and sued at ll, because I
did not see any such file(even during encoding I executed lsof to see list
of open files).
2)    I uses qpel for quarter pixel motion compensation. But colours start
spilling from one object to other. Is there any way to remoe this effect
other than not using qpel?
3)    Finally even if I do not give any options to -lavcopts parameter(that
is i do not specify -lavcopts and various parameters for it at all), I get
divx compatible movie and quality is excellent, and frame rate of conversion
is at it's peak. How does this work out because the documentation says I
must atleast provide divx4/mpeg4 parameter to -lavcopts.

Regards from
Vijay Gill
----- Original Message ----- 
From: "Rainer Koehler" <koehler at mpia-hd.mpg.de>
To: <mplayer-users at mplayerhq.hu>
Sent: Tuesday, July 01, 2003 11:50 AM
Subject: [MPlayer-users] Re: where is the extra information file created for


> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
>
> >     Sorry for being so naive on giving information. I am using following
=
> > script to do the job of encoding for me
>
> [sophisticated script snipped]
>
> My mailer had big problems with the encoding of your script, so I
> didn't decipher it in detail.  But I noticed two things: you don't use
> the string "lavcopts" anywhere (which happens to be the place where
> pass=1/2 are set, and you define a variable vcodec with the options
> for encoding, but you don't use it.
>
> Anyway, here is a little code snippet of one of the scripts I use for
> 2-pass encoding (in fact, 3-pass encoding, hence the -oac copy):
>
> foreach p ( 1 2 )
>   mencoder $in -o $out -vop scale=368:208,crop=352:180:0:30 -ovc
lavc -lavcopts
mpeg_quant:aspect=16/9:vcodec=mpeg4:vbitrate=${vbitrate}:vhq:v4mv:vlelim=-4:
vcelim=9:lumi_mask=0.05:dark_mask=0.01:vpass=$p -oac copy
>   ls -l $out
> end
>
> Hope this helps,
> Rainer
>
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