Re: Synchronize Players

Gildas Bazin wrote:

> On Thursday 22 April 2004 11:52, Philippe De Neve wrote:
>  
>
> > Hi guys,
> >
> > I'm working on a project for synchronizing video sources. The intention is
> > to show 2 or more video sources each on a independent PC. On each pc a
> > player (favourably VLC:-) )is installed to playback the video. On each
> > player all frames have to be shown at exact the same time.
> > Does anybody have an idea how I can realize this? (Not by buying an
> > expensive videowall of course)
> > Can I adjust the source code of VLC so it sends  synchronization 
> >    
> information
>  
>
> > to the other players (which are also adpated to sync) so they can adjust 
> >    
> the
>  
>
> > time a frame is shown?
> >
> >    
>
> When playing from a network source, VLC will already synchronise itself to 
> the server's clock (which is sent inside the MPEG TS stream) so all your 
> VLC instances should be more or less synched. I say more or less because 
> there will still be a fixed delay between your VLC's (due to network 
> buffering or other issues). So to have a perfect sync you'll still have to 
> ensure that, on start, the streams are in sync with each other.
>
> Have a look at src/input/input_clock.c, this is where all the clock magic 
> happens.
>
> --
> Gildas
>
>  
I am actually working on the same project and I have been investigating 
in this area. I f you want to synchronise 2 or more video sources, you 
should work on the server side - VLS for example - and make the streams 
beeing synchronise at the sending time - for this you will need to 
modify a little bit the source code but  for more details sent an email 
on the VLS mailing list as this one is for VLC.
regards

adrian

--
This is the vlc mailing-list, see http://www.videolan.org/vlc/
To unsubscribe, please read http://www.videolan.org/support/lists.html
If you are in trouble, please contact <postmaster@xxxxxxxxxxxx>