[Ffmpeg-devel] Re: [PATCH] DVCPRO50 support

Roman Shaposhnick rvs
Tue Mar 7 06:20:04 CET 2006

On Fri, Mar 03, 2006 at 09:21:00PM +0000, Mans Rullgard wrote:
> Roman Shaposhnick <rvs at sun.com> writes:
> >
> >   Just to make it clear -- I don't care how industry names things,
> >   but the fact that these 3 flavors of DV have the same picture encoding
> >   algorithms with small amount of knobs designed to address bitstream
> >   constraints and differences in sampling -- make them all just a DV
> >   codec in my book. Now, I do understand the convenience factor of having 
> >   them as separate codecs -- but lets not be confused by the ffmpeg's
> >   current restrictions.
> In that case, using separate codec IDs would be like using separate
> codec IDs for main profile and high profile MPEG2.  Nobody does that.

  Right. Things like -target XXX seem to be more appropriate somehow.

> >   Now, DVCPRO 100 is, in fact a different CODEC regardless of the name
> >   being similar to the DVCPRO 50.
> Sort of like MPEG4 isn't all that much like MPEG2, and MPEG4 AVC is
> yet another animal?

  Well, I stand corrected. It seems that even DVCPRO 100 is just a variation.


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