[Live-devel] h.264 indexer

[Sébastien RAILLARD (COEXSI)]

Dear Nouri,

 

I didn’t know that avidemux was creating an index file. It seems to be used
for subtitling synchronization.

It may be possible to convert this index file to as .tsx file for live555
but I can’t find in the avidemux source code where the index is created, how
it is created and the file format of the idx file.

 

Sebastien.

 

 

From: live-devel-bounces at ns.live555.com
[mailto:live-devel-bounces at ns.live555.com] On Behalf Of Mojtaba Nouri
Sent: lundi 22 novembre 2010 06:54
To: live-devel
Subject: Re: [Live-devel] h.264 indexer

 

Dear Sebastian
I have seen your indexer, but couldn't you use a library (like ffmpeg) to
detect all h264 frames and make a complete index file? 
Btw, Has anyone seen the avidemux software? It builds an index of the opened
file (which can be in various formats and codecs) that represents a report
if its frames. I attached an index file that it made. does it seem to be a
good start point?

On Mon, Nov 22, 2010 at 12:12 AM, Sébastien RAILLARD (COEXSI) <sr at coexsi.fr>
wrote:

I don’t think it’s the only thing to change.

Also, for indexing H264, the equivalent of the I-Frames must be located in
the stream, and that is really harder than with MPEG2 video.

By the way the indexer code isn’t really easy to understand.

That why I did a small and external TS indexer based on the starting of PES
payload.

 

 

From: live-devel-bounces at ns.live555.com
[mailto:live-devel-bounces at ns.live555.com] On Behalf Of Mojtaba Nouri
Sent: dimanche 21 novembre 2010 10:54
To: live-devel
Subject: [Live-devel] h.264 indexer

 

Hi Ross

I am trying to improve the indexer to index a h.264/ts file. 

Could you tell me which parts of the indexer are write regardless of the
codec?

In particular I see the following comment in the code

// Note: The following works only for MPEG-2 data #####

Is this the only part that depends on MPEG-2? 

I could use any information.

Thanks.


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