Along the way we answer some questions that we get asked frequently about PluralEyes, our product that automatically synchronizes clips without the need for timecode.
- What if some of the cameras are turned on and off during the shoot? Will that still work?
- Can I have an audio-only track? Because I made a separate high-quality audio recording. (This technique is known as dual-system audio)
- How do I get multiclips to work? I want to edit while seeing all the cameras at once in a multi-angle display.
For this example we shot a band with three cameras and a separate audio recorder. We've captured the clips and put them all into
To start editing we first make a sequence called pluraleyes and arrange the clips onto the timeline. Each camera goes on a separate track and the audio goes on its own track.
We start PluralEyes. (It's a standalone application in the Applications folder.) We press the Sync button. After a minute we've got a sequence with everything in sync. So right away we have the answer to the first two questions: we see that having cameras turned on and off is no problem, and having a separate audio track works just fine.
Multiclips will take a couple of extra steps, but it will be worth it. Final Cut Pro is a bit fussy about multiclips but once you've set them up they work great.
First we notice that PluralEyes says it couldn't make a multiclip because of the audio-only track. But even if it could you wouldn't like the result. Final Cut puts every clip into a separate angle. We have three cameras so you would expect three angles, but Final Cut would give you 17 angles, one for each clip. This is not very useful.
So here's what we do. We're going to export the tracks as separate movies and make a multiclip from those. It's very easy. In the pluraleyes output sequence, make only the first video track visible and mute all the other audio.
Now
This makes a QuickTime reference movie. It only takes a few seconds and we don't have to worry about using up disk space because the movie just has references to the original clips and so is much smaller than they are.
Do this for each of the three camera tracks. We could do it with the audio track too, but we have other plans for that. We now import the reference movies back into Final Cut. We're going to put them into a sequence called pluraleyes. We'll reuse the existing sequence with that name. Put them on the tracks they came from and make sure they are all lined up at the beginning of the timeline. That will keep everything in sync.
We now go back to the PluralEyes application and press the Multiclip button. This looks at the clips in the sequence called pluraleyes and makes a multiclip from them, using their positions to determine the timing within the multiclip.
We now have a multiclip with just three angles and all the clips synced up. There will be times when a particular angle is blank when the camera was turned off, which is exactly what you would expect.
We could just start our editing with that multiclip but we're going to do something to make our lives easier. It's nice to have a multiclip, but it's also nice to have a view that shows when the cameras are on or off. Fortunately, we can have both.
Go back to the original synced sequence. We're going to add the multiclip to this sequence. First we make room for its audio by moving our audio-only track down.
Finally we double-click the multiclip to bring it up in the viewer, set the Playhead Sync to Open and start editing. As we play, we can watch the playhead in the timeline to see when the cameras are going to go on or off. That helps us make the decisions as to when to switch cameras.
That may have sounded a little complicated but it's easy after you've done it once. To summarize, we really just did three things:
- Sync the clips (using PluralEyes)
- Export each video track to a reference movie
- Make a multiclip from the reference movies (again using PluralEyes)
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