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Should I get DualEyes or PluralEyes?

PluralEyes can do everything DualEyes can do (once the next round of updates is released). So if you use an editor that PluralEyes supports, you should get PluralEyes. Otherwise, get DualEyes.

What is PluralEyes?

PluralEyes is a companion application for Final Cut Pro, Vegas Pro (with support for other NLEs to come) that can automatically synchronize audio and video clips without the need for timecode, clappers or any special preparation.

Can PluralEyes be used when there are audio-only tracks, for dual-system audio?

Yes!

Should I sync first, or can I edit first and sync afterward?

We strongly recommend that you sync first. It's not impossible to do it the other way around, but too many things can happen during the editing process that can confuse PluralEyes (sound processing, sound mixing, fades, etc.). Also, PluralEyes will probably move clips around after the sync and that will mess up your edit.

If any of the cameras stopped during the performance can they still be synced using PluralEyes?

Absolutely! PluralEyes can sync every segment within a sequence, whether they are a single uninterrupted track, or broken up with starts and stops. There is no need to re-slate the camera when it restarts as long as it can still hear the shared audio of the event.

Can PluralEyes sync from a recorded soundtrack, like a CD?

Yes, which is especially useful for music videos and performances that accompany recorded music tracks. Just make sure the recording video cameras hear the audio as it is played during the event so that PluralEyes can synchronize them.

I can't find PluralEyes in the Final Cut Pro interface. How do I start it?

PluralEyes is a separate application that runs at the same time as Final Cut Pro. You will find it in the Applications folder.

Does PluralEyes work with iMovie, Final Cut Express, Platinum Studio, Pinnacle Studio, ...?

The video editors that PluralEyes is currently integrated with are listed on the product page. If you use an editor that is not currently supported by PluralEyes, you may be interested in our upcoming product DualEyes.

How does PluralEyes work?

PluralEyes compares the audio tracks in a sequence and uses a proprietary algorithm to synchronize them.

How long does it take PluralEyes to sync a project?

The time PluralEyes takes to synchronize varies with the number of separate clips in the sequence, but not on the length of the clips. Most projects sync in a few minutes.

How alike do the various camera audio tracks have to be?

PluralEyes can match audio tracks with a wide diversity of audio quality. If you can recognize the audio as taken at the same time, it is likely that PluralEyes can too. Even tracks with lots of noise and variation because of camera microphone differences can be matched with PluralEyes.

Does Pluraleyes correct for the distance between cameras?

The speed of sound is such that it travels about 1 frame for every 30 feet of distance between the cameras. PluralEyes will sync audio tracks without considering their physical distance, and a simple frame shift can bring far cameras into sync.

Does PluralEyes ever fail to match audio?

PluralEyes is usually better than most humans in finding audio clues that help it synchronize the clips. Any clips that fail to sync are placed in a sequence, or a region of a sequence, labelled "unsynced". Sync failures can usually be resolved by using one of the sync options (FCP, Vegas).

Can PluralEyes sync cameras that have no audio track at all?

No, PluralEyes needs audio to sync. It does not look at the video tracks at all.

Is there academic pricing available?

Academic discounts are available for purchases of five or more copies, typically to equip a student lab. Please send a message to and let us know how many copies you are interested in.

Does PluralEyes support Premiere Pro CS4?

Support for both the CS4 and CS5 versions of Premiere Pro has been announced. The beta will be available soon. Please sign up for our newsletter to be informed when it is ready.

Does PluralEyes support Premiere Pro CS5?

Support for both the CS4 and CS5 versions of Premiere Pro has been announced. The beta will be available soon. Please sign up for our newsletter to be informed when it is ready.