On Tue, 25 Oct 2016 12:33:57 -0600 Charles Buckley <[email protected]> wrote:
> I work in an environment at work where we do a lot of video broadcast over > IP. That is all UDP multicast. Luckily, it is an environment where single > dropped packet only corrupts that frame and section and is recovered the > next base frame (ie, anywhere from 1 to 16 frames). > > The reason we use UDP instead of other protocols is that UDP has no > handshake. It is unilateral. Other protocols would require some sort of > variation of a handshake to verify packet integrity. But, we also have an > inherent safety check in that a lost packet only affects the individual > frame. It does not propagate past that. In a RT situation with no check > within the data itself, I would go with the most streamlined an uncluttered > port and network path. > > I was not part of the discussion, so I do not know how the 7i92H works or > what sort of data you would send over the network. ... > ... If you drop a frame, it is not > the end of the world. ... Certainly not, usually it is a control loop. It is a lot faster than video, maybe around 20 times and there is also feedback sent the other way but amount of data sent is a lot less. Bandwidth and execution power required is relatively low although it must be available regularly at a frequency in the order of 1kHz. Not all systems are built so that this is available regularly all the time. ------------------------------------------------------------------------------ The Command Line: Reinvented for Modern Developers Did the resurgence of CLI tooling catch you by surprise? Reconnect with the command line and become more productive. Learn the new .NET and ASP.NET CLI. Get your free copy! http://sdm.link/telerik _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
