[Live-devel] Indexing of TS files for non MPEG2 video streams

[Sébastien RAILLARD (COEXSI)]

> -----Original Message-----
> From: Sébastien RAILLARD (COEXSI) [mailto:sr at coexsi.fr]
> Sent: mercredi 27 octobre 2010 09:22
> To: 'LIVE555 Streaming Media - development & use'
> Subject: RE: [Live-devel] Indexing of TS files for non MPEG2 video
> streams
> 
> 
> 
> > -----Original Message-----
> > From: live-devel-bounces at ns.live555.com [mailto:live-devel-
> > bounces at ns.live555.com] On Behalf Of Ross Finlayson
> > Sent: mercredi 27 octobre 2010 02:18
> > To: LIVE555 Streaming Media - development & use
> > Subject: Re: [Live-devel] Indexing of TS files for non MPEG2 video
> > streams
> >
> > >So, I've developed a small application (in .Net, so running on
> > >Microsoft Windows or it may also runs on Linux with Mono as no
> > >special library is needed). You can find it here:
> > >http://www.coexsi.fr/publications/live555-universal-indexer/ with
> > >some extra explanations. It creates a .tsx index file that is
> > >compatible with the one expected by the Live555 streaming server, but
> > >only indexing the starting of the PES sections with video data.
> >
> > Interesting.  Does this support 'fast forward' and/or 'reverse play'
> > at all, or just 'seeking'?
> 
> I don't think 'reverse play' and 'fast forward' will work as it may
> heavily relying on I-Frame.
> I've just did a quick test with VLC player and I confirm it doesn't seem
> to work.
> 
> I've finished the C implementation for Linux, after doing more tests,
> I'll post it.

The C program is done, it can also be downloaded here:
http://www.coexsi.fr/publications/live555-universal-indexer/
The binary was built and tested on Ubuntu 32-bits systems.

I think there are 2 smalls bugs involving integer overflow in the LiveMedia
library:

* In "MPEG2IndexFromTransportStream.cpp":
    u_int8_t pcr_frac = (u_int8_t)(256*(pcr-pcr_int));
must be replaced by:
    u_int8_t pcr_frac = (u_int8_t)(255*(pcr-pcr_int));

* In "MPEG2TransportStreamIndexFile.cpp":
  return pcr_int + pcr_frac/256.0f;
must be replaced by:
  return pcr_int + pcr_frac/255.0f;

> 
> > --
> >
> > Ross Finlayson
> > Live Networks, Inc.
> > http://www.live555.com/
> > _______________________________________________
> > live-devel mailing list
> > live-devel at lists.live555.com
> > http://lists.live555.com/mailman/listinfo/live-devel
> >
> >
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