[vlc-devel] Re: Trick mode support for MPEG2 TS

[yj]

It seems that VLC can play MPEG2 TS file with trick
mode support, and, the VLC can stream out streams,
is it possible for adding RTSP server support for VLC?



--- Måns Rullgård <mru at inprovide.com> wrote:

> Christophe Burgalat <c.burgalat at broadcastavenue.com>
> writes:
> 
> >> On Fri, 2006-03-03 at 02:00 -0800, yj wrote:
> >> > Hi,
> >> > I would like to know how to implement the Trick
> mode
> >> > support for MPEG2 TS stream.
> >> > Actually, I want to get a RTSP server with the
> above
> >> > feature.
> >>
> >> There have been patches submitted by
> glen at lincor.com to provide
> >> trickplay support with vlc and Kasenna servers.
> Works well.
> >>
> >> Kasenna's are not cheap though.
> 
> And there is no end to the pains they cause if you
> buy them.
> 
> > Yes but this patch only concerns VLC as a client,
> I'm right ?
> > It seems to be possible to integrate this feature
> also in VLC as a RTSP 
> > server.
> > I began to try developping it (in fact, fast
> forward only) and even if it 
> > sometimes work well, I'm not sure to do it the
> right way... I wonder how 
> > Kasenna server implements this feature.
> 
> The Kasenna server creates special fast forward and
> rewind streams by
> extracting I frames from the original file and
> fudging timestamps.
> When a client requests a trick mode the server
> switches to the
> corresponding place in the ff or rew stream.  The
> server also creates
> indexes that let it quickly map between timestamp
> and file offset for
> each of the streams.  At least this is all how it is
> supposed to work.
> It is very easily confused, and can get the indexes
> offset by several
> minutes.  And that's when it doesn't lock up in
> bizarre ways.
> 
> -- 
> Måns Rullgård
> mru at inprovide.com
> 
> -- 
> This is the vlc-devel mailing-list, see
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> 
> 


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