[MEncoder-users] Mencoder quality settings ...

[Leopold Palomo Avellaneda]

A Dijous 03 Gener 2008, Grozdan Nikolov va escriure:
> On Thursday 03 January 2008 20:58, Leopold Palomo Avellaneda wrote:
> > Hi,
> >
> > probably it's a typical question but I don't have understood it although
> > i have read the documentation of mencoder. I have some streams of video
> > produced by a home video device. This streams are coded in mpg2. It uses
> > a lot of space.
>
> Hi,
>
> for H.264 video, maybe try out my 'h264enc' script. It has a "near
> lossless" preset in it using a CRF of 18
>
> http://sourceforge.net/projects/h264enc


that's advertising!!!! ;-)

one little question, it works with  MEncoder >= 1.0rc1 that is the debian 
package that I have.

Regards,

Leo





> > I would like to convert it to using another codec (for example xvid or
> > x264) preserving the _same_ quality (in terms of taking one frame from
> > both and not finding any difference). It's something like I have a bunch
> > of files and I compress it using bz2 or zip. I know that I always will
> > have the original. Some kind of lossless compression.
> >
> > I think that it's impossible because when I decode a frame and I recode
> > it it cannot be equal to the original. But for example, if I have a
> > photo, for example in tiff and I save it to jpeg, I can choose the % of
> > quality, understanding that a 100% quality jpeg is equal to the original
> > tiff using less space.
> >
> > In my case I don't care about the disk space totally but yes to have a
> > conversion to another more efficient codec.
> >
> > So, if I don't want to look in to the bitrates, etc, there's some way to
> > convert one stream in one format to another preserving the _same_ image
> > quality but less space?
> >
> >
> > Regards,
> >
> > Leo
>
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