[MPlayer-users] lossless codecs make bigger files than raw DV ?!

[D Richard Felker III]

On Wed, Feb 04, 2004 at 03:36:39PM -0500, The Wanderer wrote:
> D Richard Felker III wrote:
> 
> >On Wed, Feb 04, 2004 at 12:34:12PM -0500, The Wanderer wrote:
> >
> >>D Richard Felker III wrote:
> >>
> >>>On Tue, Feb 03, 2004 at 09:37:10PM +0100, Andrzej M. Ostruszka 
> >>>wrote:
> >>
> >>>>video -> lavc with vcodec=mpeg4:vhq:vbitrate=2000:vpass=1/2 -vop pp=lb
> >>>
> >>>At the very least, replace the outdated vhq with mbd=2 and use
> >>>trell.
> >>
> >>This comes up often enough, and is sufficiently far from obvious to
> >>the uninitiated, that I wonder if it might not be worth having
> >>trell set as default? The only downside is that it takes longer to
> >>encode, and it would be possible to include a notrell option for
> >>those for whom this is a problem.
> >>
> >>Just a suggestion, probably a bad one...
> >
> >Yeah, IMO it's a bad one. The default options have always been the
> >most "basic", canonical mpeg4 encoding, without special features or
> >optimizations. If you start trying to make the defaults optimal, you
> >run into lots of questions regarding which options are better than
> >others, and often the answer isn't easy. As long as the defaults
> >don't even try to be optimal, users have to do a little research to
> >learn what they should use, which is probably a good thing.
> 
> I don't suggest trying to make the defaults optimal, so much as ease the
> load on developers (etc.) who have to keep making the same suggestions
> over and over.
> 
> For most options, which ones are better than others is indeed highly
> debatable, but I've never heard anything which suggests that trell has a
> downside (or even an alternative against which to compete), aside from
> the increased CPU requirements. When there is no doubt as to what is the
> more optimal choice, as seems to me to be the case with trell, not
> making that choice the default strikes me as slightly odd.
> 
> Your point, however, stands, and your opinion on the matter is rather
> more prestigious and hence credible than mine.

Yeah, I understand what you're saying. I'm just going by 2 basic
principles:

1. Default should be bare-bones minimal mpeg4 without fancy stuff.
2. If the default is _bad_ quality, newbies will have to rtfm and
   learn how to encode properly. If the default is "mostly good"
   newbies won't rtfm and then they won't crop or they'll use bogus
   dimensions or they won't experiment with *cmp, mv0, 4mv, ...

Rich