[MPlayer-dev-eng] MPCF: Features and Goals

[Alex Beregszaszi]

Hi,

> Hmm. There was some discussion on mjpegtools about this recently as it
> was regarded as a common problem. Certainly, mplayer will not play the
> AVI output of lavrec correctly until lavrec is finished (and sometimes
> not even then). Maybe it's a lavrec problem. Still, if mpcf will
> do it that's great.
it can be either a muxer,encoder,demuxer or decoder related problem ;)

i think's a problem of mplayer, it can't play avi files runtimely
downloaded (or generated) becouse of the usage of required indexes
and/or depeding on stream_end (anyway, it's on the todo list)

nut (mpcf) will success this, becouse it's packet based and normally
it doesn't even require an index

> > I don't see any difference, but the second is the main goal. Or if
> > we want to be politically correct, its purpose is mainly for
> > "archival" of your movies. :))
> 
> OK, but surely for archival purposes you want all the DVD-style
> gimmicks that some people here have been decrying and criticizing
> Matroska for including?
dunno how are thinking others, but i'm on the side of these extras.
anyway, the format should and _is_ extensible.

> > You're pretty much off-base, but I don't see how there's a
> > significant difference in requirements for the two.
> 
> Maybe one format can satisfy the demands of both uses, I don't know,
> it just seemed to me that the potential dichotomy had not been
> explicitly recognised in the discussions so far.
it can.
 
> > Anyway,
> > creation/manipulation doesn't really need a nice format; you're
> > going to be storing raw pcm audio and raw yuv frames anyway if you
> > want to be able to edit without losing quality...
> 
> Right, I use mjpeg rather than yuv. But there isn't AFAIK a simple
> format for such purposes that doesn't have at least one major
> drawback. It would be a shame if mpcf ends up a half-way house that
> doesn't fully statisfy either camp.
mjpeg is fine, but for the best quality, some lossless encoding is
preferred (also theres lossless mjpeg) - not a case in grabbing from
some VHS to archive it ;)
 
-- 
Alex Beregszaszi  <alex at naxine.org>
(MPlayer Core Developer -- http://www.mplayerhq.hu/)
  ZDNet.au: "Where do you see Linux in 5 years?"
  Alan Cox: "Hopefully world domination! (laughs)."