[MPlayer-users] Re: MPlayer-users digest, Vol 1 #1132 - 16 msgs

[steffen]

On Tuesday, 11. June 2002 21:20, you wrote:
> Message: 14
> Date: Tue, 11 Jun 2002 20:40:20 +0200 (CEST)
> From: juNk <kitestramuort at tiscali.it>
> To: mplayer-users at mplayerhq.hu
> Subject: [MPlayer-users] Encoding speed (was Re: Problem with radeon)
> Reply-To: mplayer-users at mplayerhq.hu
>
> Ok. Now I'd like to figure out what can I do to increase my encoding
> speed.
>
> I am  using 3-pass encoding.
> After encoding audio i did:
>
> mencoder -dvd 1 -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=865:vpass=1 -oac
> copy -o madre.avi
>
So i will give my thoughts on encoding speeds ....
I have a athlon 800 and ripped a lot before under win.
1.) You have to try to stay in one colorspace, since converting  colorspace 
costs cpu power.
2.) you have to crop the black bars, because your video become totaly ugly 
because you waste a lot of bandwidth for the black bars and the black bars 
costs cpu power
3.) the codec you use : in the list here very often was said that libavcodec 
is the fastest so this thing is right
4.) if you try to get long films on one CD you have to reduce the resolution, 
because the smaller resolution needs less bandwith for the same quality -> 
better quality with the same bandwitdth. Scaling while you playing the video, 
doesn't harm the quality so much , than the to low bandwidth for a to high 
resolution. 

I get between nearby 25 fps using libavcodec + resolution e.g. 640x288 

I tried transcode / DVD::Rip a time ago and was was confused by 85 fps but in 
time he ripped the video without trancoding ( mencoder with ovc copy get it 
near 190fps) , and began to read something nearby 8-9 fps during transcoding, 
so I erased it from my partition and gave mencoder a try and I am absolutly 
happy. happy. The best of mencoder is to transcode the video directly from 
DVD without copy it to the HD so I dont need so much space like before.