[MPlayer-users] reducing size of files while conserving the audio/video quality
large at lilymarleen.de
Sun Aug 24 13:14:36 CEST 2003
if you are using gnome (or even if not), you might want to try the
gmencoder frontend. It's really a great tool, you can crop with preview,
setup all (I think) parameters that mencoder has, and it's easy to use.
Great think to gamble with parameters. And it does 3-pass out of the box.
I used far more low bitrates with lacv, like 360. Of course you get
kindof ugly results, but the files get really small :)
It depends on the result size and quality you expect, I think. You might
want to scale the image size down (for 360kbit I used 320*240). Of
course, this is really low quality, than.
I also suggest to use -lavcopts vhq:.... to set him to maximum encoding
quality. It won't take much longer to encode, but with better results.
The encoding parameters for a good result depend much on file size and
movie (southpark will be totally different than jackass), so you'll have
to try it out.
Maximo Ramos wrote:
>[Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
>I am running out of hard disk, and having a bunch of music videos, as well as
>many episodes of TV series (southpark, jackass), most of them in MPEG format,
>I've decided to reencode them to gain hard disk space.
>However, I am very new at this, and after reading encoding.html and
>encoding-tips.txt I still can't decide what options to use, like vbitrate for
>I tried the following:
>South_Park_S07E06_Lil_Crime_Stoppers.proper-ftv.ShareReactor.mpg is 219MB in
>mencoder South_Park.mpg -ovc frameno -oac mp3lame -lameopts br=3 -o frameno.avi
>mencoder South_Park.mpg -oac copy -ovc lavc -lavcopts vcodec=mpeg4:vpass=1:vbitrate=800:autoaspect:vqmin=3:mbd=1
>mencoder South_Park.mpg -oac copy -ovc lavc -lavcopts vcodec=mpeg4:vpass=2:vbitrate=800:autoaspect:vqmin=3:mbd=1
>The resulting file is 89MB and:
>I choosed vbitrate 800 because according with the man page that's the minimum,
>but I am not sure what vbitrate to use in order to preserve the audio and video
>I am going to reencode all my files soon, so If somebody was in the same situation
>and have found the best options for lameopts and lavcopts, please share your
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