On 27 Jan 2010, at 08:31, Mo McRoberts wrote: > that's a good point: I wonder how much of the broadcast output *is* > encoded in real-time? all of it?
I believe so. > after all, live programming is in the minority on BBC1-4, and assuming > things sit on sensible boundaries and are pre-packetised, you > shouldn't *need* to... in theory. I can envisage some nasty workflow > issues, mind, especially if chunks of the chain pre-date DVB's > deployment. There are some sutbleties I think (other than the fact that big chunks of the broadcast chain would need replacing) - like ensuring that the receiver's buffer doesn't over- or underflow at programme boundaries, and retiming all the stream components (which are currently synchronised to the PCR in the video coder, IIRC). Also, I'm not sure how well pre-encoded and real-time encoded video would play nicely with each other in a statmux - but it's not really my area of expertise. > ...or is this one of the (secondary) goals of the tapeless production project? It's a nice idea, but not a very good fit to the way DVB is broadcast at present. I don't think that the DMI project is looking into it, but again - not an area I know a lot about. :-) S - Sent via the backstage.bbc.co.uk discussion group. To unsubscribe, please visit http://backstage.bbc.co.uk/archives/2005/01/mailing_list.html. Unofficial list archive: http://www.mail-archive.com/backstage@lists.bbc.co.uk/
