Sound Sync - 3 Cameras

Jason71 wrote on 2/21/2015, 11:18 AM
Hi there, I've shot a friends Wedding Ceremony using 3 Cameras.

I was hoping to have 3 video tracks, 1 separate on-camera audio and basically jump between each track to pick out the most suitable scene whilst keeping everything synced with teh master audio (a separate track).

Now, this works to some degree, but I can't find an easy way of fading between tracks.

I've googled a bit (not even too sure what I need to look for!), and I've got some progress using the envelope feature, but this is pretty messy to do well as I have 2 envelopes (one to fade out the current track, another to fade in the new one).

I'm also getting the render jumping between the two tracks during a fade.

Ideally, I need to have all 3 tracks running and bring each one in and out with the main audio running.

I can see there is mention of "ripple" and I think this would otherwise help, but I'm worried I'd lose audio sync if the tracks are chopping into separate scenes.

Any suggestions/youtube links/terminology offered will be great. Currently, I'm not even sure what I need to look for.

Thank-you, Jason

Comments

mike_in_ky wrote on 2/21/2015, 4:04 PM
The approach I've used in the past for syncing 2 cameras is to use Video Envelopes. It should equally work well with syncing 3 cameras.

1. Put each cameras video event on a separate track.
2. Add a "Video Envelope" (Track Composite Level) to the top and middle video tracks.
3. The envelopes will show at the very top of each of those 2 video tracks as a dark line.
4. Add pairs of "points" to each video envelope to those dark lines where you want to fade one track in favor of another of the tracks. To do 1-sec fades, each point in a pair should be about 1-sec apart. So, when you pull the envelope line down on the top track, you'll see what's on the middle track. If you also pull the line down on the middle track at the same place, you'll then see what's on the bottom track.
5. Just keep playing around with pulling sections of track envelope lines up and down to get what video clips you want on the screen when you want it there.

It's actually pretty simple. I've used the technique many times.

Bill Myers has a good tutorial video on how to do this at -->

Bill suggests using an envelope on the bottom track, but you don't need to do that since the event on the bottom track will only show when the composite levels of the top and middle tracks are down to zero.

Good luck.