[MPlayer-dev-eng] Fwd: Re: [xine-devel] RealMedia Demuxer (placeholder buffer types)

[Arpi]

hmm. interesting comment on AC3 in realmedia files. they are not liba*
compatible, needs LE<->BE conversion first...

--------- Forwarded message ---------
From: KAY Robin <komadori at myrealbox.com>
To: xine-devel at lists.sourceforge.net
Subject: Re: [xine-devel] RealMedia Demuxer (placeholder buffer types)

> Maybe you could use ffmpeg's or mplayer's one as base...
> just to allow you spending more time on codecs interface. we're interested
> too, alex or mplayer team already tried it but he found its c++ stuff too
> messy so gave it up

Well, it can't say I'm looking forward to the C++ either ^_^. My demuxer for
xine is progressing nicely but I've had a look ffmpeg's demuxer and it's
certainly a useful resource.


> mplayer already plays .rm files with rv10 video, but for rv20/rv30 we need
> realmedia codec plugins. also the rv10 decoder (from ffmpeg's libavcodec)
> segfaults sometimes :(

More to the point, RealMedia files can be used to encapsulate AC3 audio for
which xine already had a decoder for. This would be a great way to testbed
the demuxer. You "could" do the same thing with RV10 as well then we'd start
running in the same mess as BUF_VIDEO_AVI. I'm prepared to take AC3 as a
special case because (I gather from ffmpeg) the demuxer has to convert the
Real AC3 stream (be) to a standard one (le) first so it's not the same format
as sending AC3 data down the BUF_AUDIO_REAL fifo. I would be *very* grateful
if people either email* or point me in the direction of RealMedia files known
to have AC3 audio streams.

--Robin Kay--

* Not too massive via email please.


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