[Ffmpeg-devel] realmedia file format
Tue Jun 7 23:03:24 CEST 2005
Mike Melanson <mike at multimedia.cx> writes:
> 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.
Tell me about it...
> 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.
I'd rather not be bothered with it either. Unfortunately, I sometimes
come across files in that format that I wouldn't mind playing.
Realplayer is completely useless (displays 10 frames every 2 seconds),
so I guess my only hope is to cook something up myself using the
codecs from realplayer.
mru at inprovide.com
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