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From: Petri Helenius <pete@sms.fi>
To: Amancio Hasty <hasty@rah.star-gate.com>
Cc: freebsd-multimedia@FreeBSD.ORG
Subject: Re: MPEG multicast receiver 
In-Reply-To: <199709160625.XAA00359@rah.star-gate.com>
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	<199709160625.XAA00359@rah.star-gate.com>
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Amancio Hasty writes:
 > Would you happen to know how may frames / sec is it trying to send and
 > at what resolution?

CIF resolution, 23.98 fps.

 > 
 > Also how does look compare to h.261?

MPEG has not changed since we last checked this, if you want to see
what 600kbps looks like, pull over
ftp://ftp.sms.fi/pub/Cisco/outgoing/c36p1_6.mpg (it's truncated I know
:-)

Pete

 > 
 > 	Tnks!
 > 	Amancio
 > 
 > >From The Desk Of Petri Helenius :
 > > Amancio Hasty writes:
 > >  > Curious, which platform is generating the mpeg stream?
 > >  >
 > > Precept's IP/TV. The only one I know of which does send RTP
 > > encapsulated stuff and not some mumbo-jumbo invented by a someone not
 > > having a clue about interoperability.
 > > 
 > > Pete
 > > 
 > >  > 	Tnks,
 > >  > 	Amancio
 > >  > From The Desk Of Petri Helenius :
 > >  > > Petri Helenius writes:
 > >  > >  > 
 > >  > >  >   I'm glad to report that I've successfully received MPEG video
 > >  > >  > directly live from a multicast MPV transmission using a little hacked
 > >  > >  > rtpdump (to get rid of the MPEG payload header) and mpeg-tv. It runs
 > >  > >  > nice around 10fps (without audio, I'm working on that :-) even on my
 > >  > >  > lowly P90. I'm just piping the data to mpeg-tv. MPEG-TV seems to be
 > >  > >  > quite loss-friendly, just some artifacts pop when a packet is lost
 > >  > >  > every now and then.
 > >  > >  > 
 > >  > > Commenting on myself, I got the audio working (though no
 > >  > > synchronization) by piping the audio stream to mpg123 and now I've
 > >  > > 1.5 megabit MPEG audio/video live decoder directly off the network
 > >  > > (though it makes me fairly short on CPU :-)
 > >  > > 
 > >  > > Pete
 > 
 >