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Mixed frame varicam 24fps sequence trouble
Hello
I’m editing a film shot on Varicam and need some advice on workflow for Sync please.
The material is shot 24p at 59.94fps with a mixture of other different frame rates on the same tape.
The footage has been digitised using the DVCPRO HD 720p/60 setup, whole tape at once. Clips have then been frame rate converted so everything is at 24p and editing on a 23.98 sequence.
The problem I have is with actuality and other 24fps / 59.94 material where I want to keep the sound by using the 59.94 digitised material (pre frame rate conversion). The footage either judders or is out of sync on the 23.98 timeline (along the lines of expected behaviour I’ve read in other posts). It’s cured by rendering, but this is not particularly practical.
The solutions I’ve got are as follows, I’d appreciate any advice on the best route of these to take or any other :
1. Render and keep rendering and then render some more.
2. Redigitise the 24fps clips with 720p/24 setup (have no deck at the moment and footage already logged and subclipped).
3. Use the frame rate converted picture, manually re-sync the sound and create merged clips (having some joy with this if I render the master clip first to get the sync right).
Also I’ve tried converting the 720p/59.94 to 720p/24 using Compressor with very bad results.
I have more footage and a deck coming soon, but we want to keep shooting mixed frame rate and digitising in one go if possible.
Apologies for any 23.98 / 24 / 59 / 60 inconsistency, but I guess if you’ve got this far you know what I mean.
Steve
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4 Replies
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Are you saying that you are shooting both 24 and 60?
Or are you saying that you’re shooting 60 as 24 and conforming the picture to what you actually shot?
Please clarify.
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Shooting sync at 24fps (23.98) then slomo at frame rates up to 60fps. Digitised 720p60 (59.94) then using DVCPRO HD Frame Rate converter to convert slomos to 24fps and editing in a 23.98 sequence.
I then want to use the non frame rate converted material from the same tapes shot at 24 (23.98) digitised 59.94 in the 23.98 timeline as this still has the audio I want, unlike the Frame Rate Converted clips.
Hope that’s clearer
Steve
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Much clearer.
The only way to do this without rendering, or some other processor intensive equivalent is to recapture your 24p tapes at 24p.
Especially if you are not terribly deep into the process. because if you start doing it right now, and continue doing as such your finish will be way easier. What you’re doing now will just create problems that will keep coming up the further in you get.
The potential for issues when you go to Color Correction, Sound, Scoring, etc. could cost you far more in dollars than the time spent to solve the issue now.
And since this problem is primarily concerning the Production sound of your piece you really need to bite the bullet and get your footage into the machine the right way.
Hope that helps.
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Thanks very much for the advice Eric. We’ll review our workflow when the deck comes back.
At the moment we’re resyncing the audio to the frame rate converted video clips in the timeline and creating new merged subclips from the chopped up master clips.
This seems to be relatively quick and working well as long as we render the start of the clip to identfy the true first frame of the clip (i.e. the camera cut) before overlaying the frame rate converted master. If we sync up visually without rendering first and marking the cut point, then the clip and all subsequent clips are out of audio sync.
What we’re definitely not doing then is using any 59.94 video in the 23.98 timeline.
Thanks again
Steve
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