[MPlayer-users] Mencoder 1.0pre4 and DVD rip

[D Richard Felker III]

On Sun, May 09, 2004 at 07:34:28PM -0700, rcooley wrote:
> On Sun, 9 May 2004 19:09:10 -0400
> D Richard Felker III <dalias at aerifal.cx> wrote:
> 
> > All tests I've seen shown 2 B frames to hurt quality. 1 B frame
> > sometimes helps, but any more just hurt.
> > 
> > Rich
> 
> I would venture a guess that none of those tests were done on TV
> programs.

AFAIK they were done on several movies and at least one anime.

> The normal fade in/out that is commonly done on TV looks
> absolutely terrible without B-frames, and 1 b-frame just isn't enough. 

It only looks terrible if your bitrate is too low.

> Jusdging from visual quality, 2 is much better, and 3 is a small
> improvement over 2.  

PSNR would indicate otherwise.

> Although, I still don't use B-frames myself, knowing that they aren't
> very well supported, esp. in hardware players.

They also have other major drawbacks like bad decoding performance.

Rich