[Live-devel] Live Media Server streaming for H264 over TS supporting trick mode

[Victor Domingo]

Thanks Ross,

But I still don't have a clear idea to start.
I would appreciate if you can tell me the few steps to start the
implementation of the H264/TransportStream Video server with trick mode.

I understand that I need to generate a .tsx file for the ts file containing
the H264. To do that we need to parse the stream to find I-frames. So, the
current implementations of MPEG2IndexFromTransportStream.cpp,
MPEG2TransportStreamIndexFile.cpp,MPEG2TransportStreamTrickModeFilter.cpp
have to be modified to support H264, isn't it? There is anything else to
generate the right index file?

Besides that, I've been reading the FAQ and I found an answer about 'trick
mode' for different media types and it says that the implementation of some
virtual functions of ServerMediaSubsession class are needed, is it true? Do
I need anything else?

Can you guide me a little bit?
Many thanks in advance
Victor



-----Mensaje original-----
De: live-devel-bounces at ns.live555.com
[mailto:live-devel-bounces at ns.live555.com] En nombre de Ross Finlayson
Enviado el: martes, 06 de octubre de 2009 4:04
Para: LIVE555 Streaming Media - development & use
Asunto: Re: [Live-devel] Live Media Server streaming for H264 over TS
supporting trick mode

>Is it possible to  generate only an index file (.tsx) for the 
>H264/TS file using our own indexer application?

No, not without significant changes to the index-file-creation code, 
because it currently assumes that the video data within Transport 
Stream files is MPEG-1 or 2 video.  (It needs parse this data to find 
the I-frames.)


>I understand that first I need to know the .tsx file structure, but 
>is it possible without changing your server code?

It *might* be possible to support this with no change to the server 
code; however, the code to generate the index file to begin with 
would need significant changes, as I noted above.
-- 

Ross Finlayson
Live Networks, Inc.
http://www.live555.com/
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