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Choppy Video when Editing to Digibeta
I posted this in broadcast video as well, but I figured I might also get some strong recommendations here.
I’ve been pulling my hair out for the last couple of days trying to get a good Digibeta master of a 30 sec commercial we had to retool a bit. Hopefully someone can lend some insight. Here is the problem:
The original spot was shot on 35mm. We then had a transfer completed that laid it off to HDCAM 1080i 59.94fps for coloring. We had them dub a Digibeta version for broadcast and digitize a version for us to keep back at our studio. This was captured as prores at 23.98.
I was recently instructed to swap out the end card so I built everything out in a FCP timeline matching the digitized version of the spot that we received. Through Compressor I output a 10-bit uncompressed SD version at 29.97 using the best motion compensated setting etc. This video looks fine.
I then create a master sequence in FCP matching the newly transcoded version of the spot. When I lay this down to Digibeta (sony dvw-a500) through our Kona 3, it looks like garbage. The video is stuttery, and there is some flicker in the interlacing. The end card, slate, and bars all look okay. It’s just the meat of the commercial.
I’m thinking the problem is the result of capturing interlaced footage to that prores 23.98p file, but then there is the fact that it looks just fine outside of the FCP timeline.
This is driving me nuts. Any assistance you can offer will be of great help.
Thanks.
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5 Replies
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sounds like maybe the field order is reversed.
what happens when you play out your timeline to your broadcast monitor?
does it look the same? -
It does look the same through the broadcast monitor. I had considered the field reversal as well so I recompressed with top first to no avail. I even tried with no field order, and that didn’t work either.
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Have you tried capturing it as 29.97, then you can see if Compressor can do a reverse telecine to get you back to 23.98.
But the question is why to you need to go to 23.98 since you are coming from 29.97 and going to 29.97?
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It was processed through a Davinci on HDCAM at 59.94, then digitized by them to the prores files at 23.98 some time back. I don’t actually have an HDCAM deck to re-digitize the files. The only thing I have are the 23.98 clips that I have to lay down to Digibeta.
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What you are actually working with is a little confusing.
Is your captured footage SD or HD, if it is HD you should use that as your preset for the timeline, make your changes and then use the Kona3 to downconvert to make it 29.97 to the digiBeta.
How does the original footage look going out to the monitor without any conversion through compressor?
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