sync

auggybendoggy wrote on 10/9/2006, 9:14 PM
Guys,
I did a wedding with 2 cameras.
1 a panasonic dv953
1 sony hdrfx1

they don't seem to sync.

The pana actually has a better mic on it. So I'm using the audio on from that camera. However when I add in the sonys video I can make it sync but later down the vido its not on. Is this normal?

I'm thinking are they at different hz? or frames?

The sony was taped in HD while the pany is in SD.

Any thoughts.

Aug

Comments

Serena wrote on 10/9/2006, 9:35 PM
Same frame rate etc.
To do what you were hoping to do you have to sync the cameras' timecode, which is a bit of a business. Now you'll have to adjust audio or video to maintain sync by cutting. Presumably you're cutting between cameras, so that's a good point to make the needed adjustment back into sync. Or cut in silences if you need to shorten the audio. Watch ambient sound. If you need to extend in silences make sure you have ambient sound on another track. Always good to record wild audio of ambient sounds (which change quite a bit in a church) for just this purpose. Your live audio will never be silent in the pauses, and a cut may be obvious because of the discontinuity in background sound. If you have an ambient track you can fade down the live audio in the pause and bring up the ambient track, so covering the cut. If you haven't got an ambient recording, extract bits from live sound and loop.

EDIT: restoring sync in this way is effective and simple. Quite a few people record crucial audio on separate audio recorders (e.g. MP3 in the grooms pocket) and if each holds steady speed cutting to sync just takes a little more time. You need to identify key dynamics, such as lips coming together for M, P, B. Mark those on audio and video and bring them together. In your case you have audio with each video track, so not a problem.
Spot|DSE wrote on 10/9/2006, 9:42 PM
It's likely that their clocks are *slightly* different, it's not an unusual occurence.
Serena offers some very common solutions. Another solution is to find a long period of silence and create a loop with it for room tone, be sure it's reasonably lengthy.
Lay up your tracks, sync as much as allowable, then cut everything to your main camcorder for perfect lip sync. The ambience/room tone loop will hide those edit/cut points, or should, anyway.
auggybendoggy wrote on 10/10/2006, 7:18 PM
guys I found out why.

I changed hit my stop button a few times when I saw they were doing something that was not going to be on the video...
I'll never stop it again.

This means my video does not line up with his. (953 to the fx1)
also I changed my tape out near the end and lost about 1 minute of video.

Then to top that all off I took all my clips that I dloaded from my 953 and rendered them to ONE VIDEO FILE!!!! AAAAAARRRGGGG!
so seeing cuts is hard becuase I pre-edited them out.

I've learned my lesson well.....

I do plan on purchasing a multitrack (8 track) to capture the audio...
I hope that syncs up ok????

any thoughts.

I'm looking at the Korg d888

Auggy