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Need help!!! HDCAM and FCP using the BLACKMAGIC DECKLINK HD EXTREME
Anyone familiar with blackmagic Decklink HD Extreme with FCP? I have rented a HDCAM (JH-3) and having huge problems trying to capturing it to my computer (Dual-core 2.3GHz PowerPC G5, serial ATA HDD 7200 rpm).
It always searches for broken timecode and only captures in “non controled” and at a nonexceptable rate. Output is at 23.98fsp and down convert. What would the settings be for capture input and device control?
David
da***@********an.com -
7 Replies
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Correction to “down convert”. Meant to say “pull down”
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Hi David,
Do you mean that you’re outputting 29.97 from the deck or are you outputting 23.98 from the deck but capturing to 29.97 using the DeckLink card?
Why not try capturing directly with the 23.98 > 29.97 easy setup in FCP? You can then capture directly to 23.98 but output 29.97 during your edits.
regards
Kristian Lam
Blackmagic Design -
By 29.97fps, do you mean select 59.98fps? I ask because there was no 23.98 -> 29.97 easy setup. Is there an auto mode on setting the frame rate for playback on the HDCAM (JH-3) or do you have to know how it was captured? Right now it’s at 23.98psf (before it was set to 23.98pd and psf).
Another question… how fast does the harddrive speed need to be to capture 1080i HD video from the HDCAM deck? 7200rpm? 10200rpm? RAID? We did a test on our 7200 and the Decklink program said at 1080i 4:2:2 at 8 bits would be at 9fps… yeeeeesh.
David Chan
david@cinemachan.com -
yes – work at 59.94 (sorry about that) –
and you need about 220mb/sec to record uncompressed HD (about 128mb/sec to record DVCPro – this are real numbers, not theoretical from some spec sheet). You aint’ gonna get 220mb/sec from a single drive – not in the next 5 years – you must stripe multiple drives together (like 10 SATA drives, or a loaded Apple XServe RAID with 14 drives, or a nice HUGE array with 10 drives, like the U320RX).
Bob Zelin
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How about the CalDigit S2VR HD RAID? Is this a good one? Here’s the link:
https://www.caldigit.com/products.asp
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you try it, and let us know. They say that their 5 drive solution works with uncomressed HD.
bob Zelin
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Bob,
I do belive you have made a mistake here…
8bit Uncompressed 4:2:2 is 155.6 MB/s + sound + overhead so 200-205 MB/s is fine
DVCPRO HD is 12.5 MB/s (B – byte, b – bit) + sound + overhead so 17-19 MB/s is fine, thus single drive WILL DO!-Kaspar
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