[Live-devel] Problem for Trick Play mode streaming

[Glen Gray]

Hey guys,

This has been covered before on the list if you check the archives.

In summary, VLC has no support for RTSP trickplay. However, it's coming, 
and hopefully soon. I know I keep saying that :) What your seeing when 
you fastforward is the rate of play on the ts buffer increase. But once 
the buffer gets emptied then the video stream breaks up, as it can't 
fill the buffer fast enough. What should happen is that VLC should tell 
the the RTSP server to increase the scale of play so that the stream 
feed to VLC contains the increased playback rate.

I've patches for VLC that allow trickplay support but only against 
Kasenna servers. I've been in discussions with the VLC guys about how to 
make those patches more generic so that they'd be accepted upstream by 
the project.

I've a working set diffs for this implementation for VLC 0.8.6a that 
just needs a small bit of work to fix up the KeepAlive mode on Kasenna 
servers (what we currently use). Then I'll be able to test against the 
live555 streaming server and make sure I've handled the non-kasenna way 
properly.

As per usual I'm swamped with other projects at the moment, so much so 
that I've been doing the 0.8.6a patchset in my limited free time. 
However, this is now becoming more of a priority at work as we need to 
be flexible in our VOD server, some customers have existing VOD servers 
for example.

I'll make an announcement to the list soon, with link to the patches and 
perhaps a source rpm or something.

Kind Regards,

Vinod Madhav Joshi wrote:
> Hi all,
> 
>       We are using Live555 streaming server to stream MPEG2 TS and VLC as a
> client.
> 
>       For normal streaming the streaming is fine.
> 
>       Also we successfully created .tsx of respective streams which are
> greater than 0 bytes.
> 
>       When we fast forward the video, for few seconds it will start it will
> display the video is being forwarded.
> 
>       But after 4-5 seconds the video will stuck up, which should not
> happen.
> 
>       What the problem can be here?
>       Anybody is facing the same problem?
> 
>       If anyone have more information about this please help us..
> 
>       Thank You.
> 
> _______________________________________________
> live-devel mailing list
> live-devel at lists.live555.com
> http://lists.live555.com/mailman/listinfo/live-devel


-- 
Glen Gray <glen at lincor.com>              Digital Depot, Thomas Street
Senior Software Engineer                            Dublin 8, Ireland
Lincor Solutions Ltd.                          Ph: +353 (0) 1 4893682