Re: [MPlayer-users] Encoding quality advices

[Steffen Barszus <st_barszus@xxxxxx>]

On Thursday 28 November 2002 23:07, Moritz Bunkus wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Hi.
>
> > Could this be published online somehow ? Maybe there comes other "guides"
> > too (looking at the people with great knowledge on this list) ?
>
> I itend to wait a couple of days for replies and then to integrate that
> part into my guide at http://www.bunkus.org/dvdripping4linux/ Problem
> is that I should probably rewrite several parts of that guide - it's
> basically over six months old, and you know how much mplayer (transcode
> as well, but not as much) has changed since then, and I don't have the
> time to do it properly. I'll see what I can get done this weekend.
>
Thanks a lot ...



> Another thing is that q=2 and q=3 look really good while the 'bigger'
> quantizers really lose quality. So if your distribution shows the
> majority of quantizers at 4 and above then you should probably decrease
> the resolution (you'll definitly see block artefacts).

So if I get it right, if I set the quantisizer to high, the codec has no 
chance to give frames with less detail a smaller bitrate and lacks bitrate on 
high-bandwith-needed scenes. Thats the vqmin and vqmax are all about, to 
steering the encoder on how to give the bitrate. 

BTW: If we had a container with AR-storage, this could save data on nearly 
don't lose quality, at least on tv-output. But this shouldn't be a quick 
hack. So better to dont have it as having a workaround.

Greets

Steffen