5D/7D and Pluraleyes

B

belker

Member
I am going to be recording double system sound on a shoot with a 5D and a 7D.
The busiest days will have a boom and four wires.
The director/editor will be using Pluraleyes to sync in post on Final Cut although I don't yet know which version of FC.
I will deliver a multitrack recording from a Sound Devices recorder. The first two tracks will be boom and lav mix, boom on track 1 lavs on track 2. Below will be all the ISO tracks.
I will be feeding the 5D/7D a scratch track via wireless. I will probably feed the Boom/Lav mix to the camera.
We will be slating all takes.

My question is how well does Pluraleyes work when syncing multitrack recordings? I will be handing off polywave files.
The mix track sent to the camera will not exactly match the total of the multitrack session. Will this cause a problem for Pluraleyes? Will the slate, which should be common across all tracks, be all that's needed for the automatic sync?

Thanks,
Belker
 
Last edited:
PluralEyes works by comparing the waveform of the audio embedded with the picture (your scratch track) to the waveform of the imported audio (your double system tracks).

It works best when the camera audio is the same as the imported track's audio that is used for comparison. You can select which of the imported tracks you want to use for comparison, but to make it simple, I would recommend making sure that whatever you record on track one of your SD recorder is the same audio that is being sent to the camera. If track one is your boom, and you're getting good dialog with it (because booms are best!), then assign that track output to the camera feed.

Claps will help if the editor chooses the wrong track to sync to, but it won't be as fast.
 
Fun fact: I've found (and asked around and had it confirmed) that on the 5D (you don't say whether M2 or M3, this applies to M2) the audio from the ONBOARD cam is out of sync with video! Yup. Had to slide my audio over a few frames on every shot. So if you're using that (not sure how it works if feeding a boom to the cam), pluraleyes will be syncing your out-of-sync onboard mic audio with your recorder, so you'll be hand syncing everything (my offset was not the same shot to shot.)
 
Josh Bass said:
Fun fact: I've found (and asked around and had it confirmed) that on the 5D (you don't say whether M2 or M3, this applies to M2) the audio from the ONBOARD cam is out of sync with video! Yup. Had to slide my audio over a few frames on every shot. So if you're using that (not sure how it works if feeding a boom to the cam), pluraleyes will be syncing your out-of-sync onboard mic audio with your recorder, so you'll be hand syncing everything (my offset was not the same shot to shot.)
Click to expand...

This is very true. I worked on a documentary that was shot on a 5D only to realize (after reading a thread about this on Creative Cow) that all audio was out of sync by 2 frames.
 
You must log in or register to reply here.
Back
Top