Recording sound separately
Posted 20 October 2005 - 08:49 PM
Posted 20 October 2005 - 09:56 PM
Posted 26 October 2005 - 01:52 PM
Posted 26 October 2005 - 02:22 PM
just to review, in film, to record SYNC sound, you'll need:
1 - a QUIET camera that runs at constant 24 fps
2 - a sound recorder that also runs at constant 24 fps.
Getting this stuff over to your computer can be done in a variety of ways.
Just want to make sure the shorthand I'm seeing here isn't misleading someone.
Posted 03 November 2005 - 11:39 AM
Posted 03 November 2005 - 12:01 PM
OK, so say you have an Arri BL with a crystal sync motor and a Tascam DAT. I don't understand how you're physically supposed to connect the two. I mean, does the crystal motor regulate the DAT's power supply? That doesn't seem right. What is the "4-pin XLR" on the sync motor for? I assume that's how the actual syncing is taking place...?
You don't need to physically connect a crystal-sync 24 fps camera and a crystal-sync sound recorder (although many DAT's aren't crystal, they are close enough). You just need to shoot a slate and clap it at the head of the scene after the sound has started rolling, transfer the sound to your editing system, and line-up the sound of the clap to the image of the clap on the film. If this is a time-code DAT, you can also get a "smart slate" with time code displayed on it, "jam" it in sync with the DAT so that the same time code is displayed, and then shoot it at the head of the scene, then line-up the time code numbers on the DAT in your editing system with the time code numbers on the frame of film. But clap the slate just in case.
Or you can send your sound tape to the telecine facility with your film and have them sync it to your picture themselves onto the videotape. Either way, you need a slate at the head of the shot and you need to clap it.
Posted 03 November 2005 - 12:48 PM
I'm not sure I've ever come across a helically-scanned tape deck that wasn't taking its servo controls from some kind of crystal timebase. Really?
Posted 03 November 2005 - 12:56 PM
Thanks for your help.
Posted 03 November 2005 - 06:50 PM
I would be surprised that in a thousand dollar dat they would not have a crystal involved. There are even cyrstals in my X-box controllers.
I would also wonder just how efficient can charge-loop timers be, or even TTL given that temperature can affect the speed at which they clock.
Posted 03 November 2005 - 07:31 PM
Posted 03 November 2005 - 08:03 PM
1 - crystal sync/timecode = constant speed guaranteed.
Otherwise there can be drift -- regardless of whether you're taking about digital, analog, or whatever.
2 - if you're shooting for quick-cutting, you still want solid elements in longer takes for your footage. A general rule is ten seconds on each end of a take, just in case. You don't want to get stuck in edit, with all your filmstock shot, actors gone home, etc. and realize you're missing a beat here and there beause you were too cheap to give yourself some coverage on either end.
That said... yes, online editing gives more leeway and it can certainly be done that way. It'll be a big hassle, though. Be SURE and keep very detailed and complete camera and audio logs!