[MPlayer-dev-eng] Re: Why is the mplayer-1.0pre3-dumpvideo.diff patch not applied?

[D Richard Felker III]

On Tue, Feb 17, 2004 at 12:07:24AM +0100, Balatoni Denes wrote:
> Hi!
> 
> 2004. február 16. 23.08-kor D Richard Felker III ezekkel a bolcs gondolatokkal 
> ajandekozott meg:
> > > IMHO -of rawvideo does make a lot of sense if you do transcoding to mpeg2
> > > with mencoder and want to use an external muxer because you can skip the
> > > -dumpvideo step.
> >
> > I agree, but this has nothing to do with what we were talking about
> > (which was dumping, not raw output).
> 
> I beg to differ. mencoder -nosound -ovc copy -of rawvideo (or dump) -o bla.m2v 
> blabla.mpeg would dump the video stream. 
> There already was a patch to add a dump output format to mencoder, but it was 
> rejected because of some cosmetics (I presume). If somebody was kind enough 
> to clean that up, imho it would be a usefull feature.

RAW AND DUMP ARE NOT THE SAME THING!!!! Raw (in the context we're
talking about) means to output a stream without any framing/container,
just the actual raw encoded frames one after another. These could be
frames that already existed, or ones which you just encoded. Dump
specifically means to write out the exact data that was there already.
In the case of video (-dumpvideo), it's basically the same as -ovc
copy combined with -of raw. But for -dumpstream, there's no analog
with mencoder because you don't want to remux, you just want to write
out the data _exactly_ as it was to begin with.

Rich