[Live-devel] H264 encoder

[Pering, Trevor]

Ross -- just to be pragmatic, about how much does such work cost (order
of magnitude)?  This would be for implement-and-release-as-open-source
kind of work... for implementing H264 or getting things to work for
MPEG4. (I'm basically in the position of either figuring it out myself,
or convincing the powers-that-be to pay for it.)

	Trevor
 

-----Original Message-----
From: live-devel-bounces at ns.live555.com
[mailto:live-devel-bounces at ns.live555.com] On Behalf Of Ross Finlayson
Sent: Wednesday, December 14, 2005 8:23 AM
To: LIVE555 Streaming Media - development & use
Subject: Re: [Live-devel] H264 encoder


>I am trying to plug a H264 encoder into the
>MPEG4VideoStreamDiscreteFramer -- is this going to work?

No.  "MPEG4VideoStreamDiscreteFramer" is for 'regular' MPEG-4 part 2 
video - not for H.264 (aka. "MPEG-4 part 10").

A separate "H264VideoStreamDiscreteFramer" class would need to be 
written to handle H.264.

>My hope was
>that H264 might work here, but I'm just relazing that there might be
>some Layer-2 vs. Layer-10 confusion.  Is the MPEG4 support in Live555
>layer-2 or layer-10, or both, or...?

Classes named "MPEG4Video" or "MPEG4ESVideo" apply to MPEG-4 part 2 
video.  Classes named "H264Video" apply to MPEG-4 part 10 video (aka. 
H.264, aka. AVC, I think).

>Now, I look at the code more closely, and there is an
H264VideoRTPSource
>class that is not used in any of the test programs.  Is this what I'll
>need to be using instead?

No, "H264VideoRTPSource" is for receiving *incoming* H.264 video RTP 
packets.  There is currently no support in the library for sending 
*outgoing* H.264 video RTP packets.  When someone wants to pay for 
this to happen, it will happen.


	Ross Finlayson
	Live Networks, Inc. (LIVE555.COM)
	<http://www.live555.com/>

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