[MPlayer-users] MPlayer fails to play RV40 files

Roberto Togni rxt at rtogni.it
Tue Dec 25 15:39:52 CET 2007

On Tue, 25 Dec 2007 11:30:59 +0100
"Ulf Magnusson" <ulfalizer at gmail.com> wrote:

> On Dec 25, 2007 4:22 AM, compn <tempn at twmi.rr.com> wrote:
> > Ulf Magnusson <ulfalizer <at> gmail.com> writes:
> >
> > >
> > > Hi,
> > >
> > > MPlayer fails to play the RealMedia files from
> > > http://www.aduni.org/courses/algorithms/index.php?view=cw , writing
> > > "No stream found." to the log. RealPlayer plays them fine. I'm looking
> >
> >
> > hmm, video works with mplayer 1.0pre7 ...
> >
> > -compn
> >
> > _______________________________________________
> > MPlayer-users mailing list
> > MPlayer-users at mplayerhq.hu
> > http://lists.mplayerhq.hu/mailman/listinfo/mplayer-users
> >
> Is that a newer version than 1.0rc2? I just installed rc2 via
> MacPorts, and I still get the same problem:
> "
> Playing 05_lect_01.rm.
> REAL file format detected.
> Stream description: audio/x-pn-multirate-realaudio logical stream
> Stream mimetype: audio/x-pn-realaudio-recording
> Stream description: video/x-pn-multirate-realvideo logical stream
> Stream mimetype: video/x-pn-realvideo-recording
> Stream mimetype: logical-fileinfo
> Stream mimetype: logical-fileinfo
> Stream mimetype: logical-fileinfo
> No stream found.
> Exiting... (End of file)
> "
> Just out of curiosity, why isn't there a binary download for rc2 for OS X?

Very strange file. Should be a new format, since realplayer8 rejects it.
Basically the file is a multirate file (audio/video is available at
different bitrates in the same file).
The main difference with known multirate file is in the header layout:
instead of having one header for every audio or video stream, this file
has just two headers (one for audio and one for video) with all the
streams in it.
I still haven't checked the layout of the DATA section, the "standard"
multirate files are non-interleaved with one data block (+index) for
every stream.
also different from all known samples, this file does not use the same
codec for all the audio tracks (some are sipr, another one is cook).

I'll add support for this format, but it may take some time.

Btw the video track is RV20, not RV40.

About pre7: it's a very old version, that did brute force searching
for audio and video tracks, so it can find some video; it plays video
but audio is messy.

About rc2 for macosx: afaik it's in work, no idea when it will be ready.


Better is the enemy of good enough.

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