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24p DV to 24p HDCAM
Hi,
I have DVX-100 24pA NTSC DV footage in a 23.98 sequence. I want to uprez to HDCAM NTSC 23.98. The post house I’m working with recommends this workflow:
1. Within FCP, create a Quicktime 10 bit uncompressed 4:2:2 (23.98 progressive)
2. 10 bit Quicktime (23.98 progressive) transferred to Digibeta 29.97.
3. Digibeta feeds into Snell & Wilcox Ukon and converted to HDCAM 23.98 progressive.I want to maintain optimal quality as my film will be showing in a large theater on HDCAM. The post house maintains that they do conversions like this all the time, and say I need a Digibeta in order for the HDCAM to run off of timecode. We’re using the Snell & Wilcox Ukon as supposedly the hardware uprezzers are superior to software.
My questions are:
A. Is it necessary to convert to 29.97 Digibeta? By making a 23.98 sequence into 29.97 and then converting back to 23.98 seems like it might create pulldown issues and doesn’t seem right.
B. Can the Snell & Wilcox Ukon, Teranex or other HD uprez boxes directly convert Quicktime 10 bit uncompressed 4:2:2 to HDCAM? I don’t see the point of going to Digibeta just to run off of timecode.It seems like there’s the old Hollywood (expensive) way of doing this, and the DVX-FCP way that eliminates waste and high cost. Let me know if the workflow they recommend is the best option.
Thanks,
Alexander -
2 Replies
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Any of the hardware up conversions would be better than doing the same in software, but I don’t quite understand why you’d need to change it to digibeta first. Why not just run it from DV to HD. Usually the less you recompress the better…
Jerry
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I didn’t really mention all the steps:
1. Within FCP, create a Quicktime 10 bit uncompressed 4:2:2 (23.98 progressive)
2. 10 bit Quicktime (23.98 progressive) transferred to Digibeta 29.97.
3. Digibeta feeds into Snell & Wilcox Ukon and converted to HDCAM 23.98 progressive.
4. The HDCAM 23.98 does not have titles. Capture HDCAM footage into FCP and lay into HD sequence.
5. Lay SD titles into FCP HD sequence and they should upconvert.
6. Export FCP HD sequence and capture to another HDCAM tape now with titles.Our 1st try, we skipped #4-6 and the titles have changed from a solid yellow to white/yellow banding. I guess the Snell & Wilcox doesn’t handle title upconversions well.
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