At 05:25 PM 1/10/2006, Jose Da Silva wrote: >Now imagine you are watching the news and they show an on-the-spot >segment recorded from a handy-cam type camera. I would think that you >are getting colourburst according to the portable camera and not >according to studio-quality colourburst. >I think the colourburst would be accurate for studio stuff (generated on >sight) or even film type shows and movies, but now you get a lot of >media recorded digitally, VCR tapes, etc, and pumped out via plain >VCRs, DVD machines, etc, ...all of which produce their own colourburst. >We may possibly be seeing the sunset on colourburst as an accurate >reference sent out by the TV services. I think that you will find that all such external sources are fed into a Time Base Corrector. This synchronizes the external source to the station master clock. Harold H may be able to shed some insight on this. I'll also ask a couple of my TV Broadcast tech buddies about this later this week as well. dwayne -- Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax Celebrating 21 years of Engineering Innovation (1984 - 2005) .-. .-. .-. .-. .-. .-. .-. .-. .-. .- `-' `-' `-' `-' `-' `-' `-' `-' `-' Do NOT send unsolicited commercial email to this email address. This message neither grants consent to receive unsolicited commercial email nor is intended to solicit commercial email. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist