[Ffmpeg-devel] realmedia file format
Tue Jun 7 22:32:32 CEST 2005
M?ns Rullg?rd wrote:
> Does anyone here know of a complete specification of the realmedia
> file format? There's a partial one on multimedia.cx, and a slightly
> different version of the same document is available on the helixplayer
> site. Both of these are missing information on the special treatment
> video packets seem to require, judging from lavf source code.
> Obviously, someone knows how to do it...
RealMedia is another of those "open" formats-- like QuickTime and RTSP
and CORBA-- that are infinitely extensible. They are designed to be
"open" standards that comfortably transport proprietary data.
My point is that understanding the general outline of the RM format is
not enough-- the interesting stuff is what they do with their own
proprietary stuff inside. I would like to document this based on what
various projects have reverse engineered... but I just can not build up
that much enthusiasm for Real's stuff.
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