[Live-devel] frame-by-frame transmission of RTP video

[Calkins, David S]

Can I just compress the frames to JPEG?

-----Original Message-----
From: live-devel-bounces at ns.live.com
[mailto:live-devel-bounces at ns.live.com] On Behalf Of Calkins, David S
Sent: Saturday, April 16, 2005 3:38 PM
To: LIVE.COM Streaming Media - development & use
Subject: RE: [Live-devel] frame-by-frame transmission of RTP video

The receiving client is written in Java and will be using the Java Media
Framework to receive the video, which I believe should be able to handle
the MPEG format.

I was originally hoping on sending raw, uncompressed video frames, but
it looks like that isn't an option, so I'll need to look into
compressing them in a format LIVE.COM supports.


-----Original Message-----
From: live-devel-bounces at ns.live.com
[mailto:live-devel-bounces at ns.live.com] On Behalf Of Ross Finlayson
Sent: Saturday, April 16, 2005 2:32 PM
To: LIVE.COM Streaming Media - development & use
Subject: RE: [Live-devel] frame-by-frame transmission of RTP video


>- we're only capturing video, no audio
>- the device provides us with discrete uncompressed video frames

Are you planning to compress these frames prior to transmission??  I.e.,

most people use a (hardware or software) encoder to compress video
frames 
(e.g., to MPEG-1, 2 or 4) prior to transmission.  Note that the
"LIVE.COM 
Streaming Media" code does not include software encoders.

Or are you instead planning to transmit raw, uncompressed video 
frames?  The IETF is currently defining a standard RTP payload format
for 
uncompressed video 
<http://www.ietf.org/internet-drafts/draft-ietf-avt-uncomp-video-06.txt>
; 
however, the LIVE.COM code currently does not implement this.

What receiving client(s) do you plan to use to recieve/view your
streamed 
video?  This should tell you what codec(s) (if any) you should use to 
compress the video stream.


	Ross Finlayson
	LIVE.COM
	<http://www.live.com/>

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