you can have a look on getstream DVB Streaming http://silicon-verl.de/home/flo/projects/streaming/ > Hi, > > On Tue, Oct 21, 2008 at 11:48:45AM +0200, Frank Schmirler wrote: > > On Tue, 21 Oct 2008 09:13:15 +0200, Theunis Potgieter wrote > > > What is exactly involved in changing it from streaming to multi- > > > casting, isn't it just changing the IP destination? Or does it > > > require repacking it from mpeg2-ts to something else? Sorry if this > > > is a stupid question. > > > > We are not limited to TS here - any of the formats streamdev can remux to > > should do. > > The ADB-Boxes use Multicast-TS. I have captured a transmission from my > IPTV provider. So you can take a look on it: > > http://www.makhutov.org/downloads/adb/ > > > I'd say the following things are required: > > - Use UDP instead of TCP for streaming (is it just switching from SOCK_STREAM > > to SOCK_DGRAM or do we need to do something more, e.g. fixed/max. packet sizes?) > > - Provide some way to select the channel for multicast transmission and stop > > it when it's no longer needed (probably via streamdev http server menu. Or do > > these kinds of settop boxes support some sort of control protocol to > > enable/disable the stream?) > > The boxes send IGMP Join / Leave Group messages, if you switch or turn > on a channel. > > Streamdev could listen for such messages an enable/disable the streams. > > The IGMP Join Group messages are send in an interval (1 messege/minute). > If an IGMP Leave Group message is recieved, or if no Join Message was received > during 2 minutes then the stream sould be stopped. > > The boxes also support HTML, so then can post data to a webpage, if the > channel was switched. I am not sure if all boxes support this. At least > the ADB boxes can do this. > > The best would be implementing the stream stop/start by using IGMP as > this is part of the IP-Multicast standard, so in theory all multicast > clients should support it. > _______________________________________________ vdr mailing list vdr@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
