David Gilbert wrote: > make them unusable for recording simple RF. A DVR might not have that > problem, although noise and signal levels could still be an issue. It > might also be the case that any standard video recorder (or at least the > software associated with it) might try to insert sync pulses on playback.
The lossy compression strategies used in DVRs make them only suitable for moving picture for direct human consumption. They do things like only encoding the differences between frames, encoding the movement of blocks, transmitting a rough update to a frame and then refining it over successive frames if it doesn't change, and selective control of spacial frequency response. Because the compression is 3D (two in space and one in time), sync pulses are even more important to them. -- David Woolley "we do not overly restrict the subject matter on the list, and we encourage postings on a wide range of amateur radio related topics" List Guidelines <http://www.elecraft.com/elecraft_list_guidelines.htm> ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
