Jens M Andreasen wrote: > On Mon, 2009-09-21 at 17:51 -0400, Paul Davis wrote: > > >> its also true that there are variants of SMPTE that include subframes, >> which certainly help the accuracy, but its not clear to me how >> commonly this information is actually passed around. >> > > You will always have quarter-frames. No EBU/SMPTE without them. If you > have the "real" signal, you will then also have the 1KHz bi-phase to > adjust to. Once locked, you have the video signals pixel-precise > vsync .. > > Locate isn't that critical, would normally be set to place you 4 - 5 > seconds before the actual event (to give you a reasonable count-in) and > the punch-in/out would then either be performed from a cue-list or just > manually.
Yes, as I mentioned before, I started my tape recorder most times with a pre-roll around 2 bars, at 120BPM 2 bars are 4 seconds, but I only did it for audio at home. I worked for professional video studios and IIRC vsync needs some kind of additional BNC video connection. _______________________________________________ Linux-audio-dev mailing list [email protected] http://lists.linuxaudio.org/mailman/listinfo/linux-audio-dev
