[MPlayer-users] Problems Encoding A 130min movie

[martin pavon]

 --- Alvaro Gonzalez <tma4 at yahoo.es> escribió: > [Automatic answer: RTFM
(read DOCS, FAQ), also read
> DOCS/bugreports.html]
> Hi,
> I am triying to encode the episode I (practicing)
> It is aproximately 130 min.
> In the normal scenes there is no problem, but in the battles the quality
> is 
> very low.
> I use this command lines for video:
> mencoder -dvd 1 -ovc lavc -lavcopts
> vcodec=mpeg4:vhq:vpass=1:vbitrate=585 
> -oac copy -o epii.avi 
> and the same but vpass=2 for the second pass
> In a forum people said to me two things:
> First: They don't encode in less than 900 Kbits/sec

First I'm very far from be an expert so ... 
Well, 585 is low indeed. Perhaps you may compress the audio to make space 
for the video; you can try with

-oac mp3lame -lameopts abr:br=128 or with
-oac mp3lame -lameopts abr:br=96

in this case you can try with vbitrate=624 or 656
(assuming your target is burn it in one 700mb cd!)

Also, I don't remember but I guess that Ep 1 is widescreen 2.35:1,
you must cutt of the black bars  and scale. For cutt off the blackbars
try with

mencoder -dvd 1-ovc lavc  -lavcopts vcodec=mpeg4 -nosound -o /dev/null
-vop cropdetect

(I suppose that this works on the fly, I allways rip the dvd to the HD
first)
you get something like 
crop area: X: 4..715  Y: 56..420  (-vop crop=712:364:4:56).000 [755:0]

you need -vop crop=712:364:4:56

To scale, since the videobitrate is so slow, I suggest 

scale=512:224 or even scale=480:208

so your second pass may be
mencoder -dvd 1 -ovc lavc -lavcopts vcodec=mpeg4:vhq:vpass=2:vbitrate=656
\  -oac mp3lame -lameopts abr:br=96 -vop scale=480:208,crop=712:364:4:56 \
-o epii.avi 

Any way, I would use two cds

> Second: Ask here for help
> 
> I have another problem: 
> In the second pass it has worse quality.

I don't know

Regards, 

Martín
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