[Live-devel] H263plusVideoRTPSink

[David Skiba]

Are there any open source H.263 encoder libraries you would suggest?

-----Original Message-----
From: live-devel-bounces at ns.live.com [mailto:live-devel-bounces at ns.live.com]
On Behalf Of Ross Finlayson
Sent: Friday, November 05, 2004 7:24 PM
To: LIVE.COM Streaming Media - development & use
Subject: Re: [Live-devel] H263plusVideoRTPSink

First, note that you should be referring to RFC 2429, not RFC 2190.

>I modified the testMPEG1or2VideoStreamer sample to use
>H263plusVideoRTPSink. I am using ByteStreamFileSource.cpp
>as the source for my data. When ever doGetNextFrame instead
>of reading from disk I call my H263 encode routine to encode a static
>image and pass that back.

OK, although I would have used "DeviceSource.cpp" as a model, rather than 
"ByteStreamFileSource.cpp".

>  1. Do I need to add a header to my data before I pass it back? It seems
>that H263plusVideoRTPSink is expecting two bytes of 0x00 on the front
>of the data.

The data generated by your encoder should be a proper H.263 frame.  As 
such, it should begin with two 0x00 bytes.  (If it doesn't, then it might 
not be valid.)

>  When looking at RFC2190 it describes an H.263 payload header
>before the bitstream.

Again, you should be referring to RFC 2429, not RFC 2190.

>  Is that something I need to add in addition to the two
>0x00 bytes?

No, "H263plusVideoRTPSink" adds this automatically.  All you need to do is 
deliver it proper H.263 video frames.



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

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