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HD Offline Codec
Hey:
I’m just about to start a project that has 50(!) HDCAM tapes shot at 23.98fps. The director/editor wishes to edit in HD… but does understand that it will have to be compressed in order to fit approx 2500 minutes of footage on the drives. My question to this list is: what is a good codec to capture? Apple ProRes? DVCProHD? I’ve got 2x500GB Glyphs for the project and need to fit all of the footage on those drives. I’m using Aja Kona3 & FCP Studio 6. The director will be editing on his own FCP system.
Thanks in advance 🙂
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14 Replies
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You would need almost the double of that capacity (1’875TB) to fit 2.500 minutes of DVCProHD in disk.
And think that you must always let some room to allow the HDs work properly.
Rafael -
Not to mention room for render files, etc, etc., etc.
David Roth Weiss
Director/Editor
David Weiss Productions, Inc.
Los AngelesPOST-PRODUCTION WITHOUT THE USUAL INSANITY ™
A forum host of Creative COW’s Apple Final Cut Pro, Business & Marketing, and Indie Film & Documentary forums.
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If you use the Kona card to capture the 1080 psf 23.98 to 720p23.98 DVCPro HD, I figure all of that footage (figuring 30 minutes per tape) will come out to 536GBs with 2 channels of audio.
DV 23.98 will be 276 Gigs.
So, if you capture 720p23.98 DVCPro HD, you will have less than 50% of usable drive space left.
If you capture SD 23.98, you will have less than 75% of usable drive space left.
By the way I figured it would be about 1500 minutes of footage. 2500 minutes across 50 tapes would be 50 minutes per tape. That would only be possible on large cassettes.
Jeremy
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[Jeremy Garchow] “2500 minutes across 50 tapes would be 50 minutes per tape. That would only be possible on large cassettes. “
HDCam tapes adjust the recording speed on the tape based on the frame rate.
So you get 32 min at 29.97 and 40 min at 23.98 on the same size cassette.
gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows -
I hear that, but that still doesn’t equal 50 minutes per tape!
🙂
Jeremy
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FYI…. the tapes are Sony BCT-40HD small format cassette. recording time at 24PsF is 50mins 🙂
Here’s another question for you guys… recording all of the material in DVCProHD… is it going to slowdown the system for the offline? Are we wrong for thinking that we can offline in HD? Is there a more compressed HD Codec? something between the date rate for HDV & DVCProHD? We are planing to online at a later date anyway.
thanks for the comments
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[Steve Cook] “recording time at 24PsF is 50mins 🙂 “
I get that, but I bet that each tape isn’t wall to wall 50 minutes. 🙂
I’d stick with DVCPro HD. You will still be able to edit with FCPs rt engine.
The next step down is to go to dv 23.98 which will cut your storage requirements in half. DVCProHD @ 720p23.98 is about the same as dv50 in SD. It’s really your best bet.
You could always get more storage as well.
Jeremy
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ProRes does have a lower “target” rate (88mbps) than DVCProHD at 100Mbps. Whether that’s enough to justify conversion…
If you truly want off-line, go DV25. Reconform later.
Cheers,
todTod Hopkins
Hillmann & Carr Inc.
todhopkins-at-hillmanncarr.com -
ProRes is 145 mb/sec and ProResHQ is 220 Mb/sec, now those will get smaller depending on frame size and frame rate, but they are still larger than DVCPro HD. DVCPro HD @ 720p23.98 is about 5 MB/sec. It’s about double dv25.
Jeremy
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Oops. 88Mbps is HQ. Regular is lower at 59Mbps.
Tod Hopkins
Hillmann & Carr Inc.
todhopkins-at-hillmanncarr.com
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