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Editing HD music video on G5 Quad
Hope this newby is not asking embarrassing questions but my 3 calls to Apple techs gave me three different answers. I’ve been given a music video to make a few cuts and effects on. I received it as an uncompressed HD qt. movie, 20 gig file. The end product is to be a digibeta tape back to the client, and they want to sell the music video on itunes. The client doesn’t know much detail other than they want to keep it as high a quality as possible.
My system stops and starts if I try to edit it uncompressed (70meg/sec). I’m using an internal drive with lots of free space; no raid. Should I compress with ProRes 422 so I can handle it? I think i could then “print to video” on a borrowed hd camera and hand that off to make the digibeta copy. Given the final destination of the project it seems like wasted effort to keep it totally uncompressed all the way through. Option 2 would be doing some sort of online/offline edit where I match back to the original uncompressed clip. The apple tech says this would require “a lot of reading” on my part; and i guess on his part too. Any suggestions much appreciated.
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5 Replies
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You can’t do HD uncompressed without Raid.
You can do SD uncompressed (1 stream) without issue though.
I have done this kind of project before as well, (hd music video being output to digibeta) just use compressor to downsize it to SD resolution. Make sure the resize and frame filter is set to best quality.
Make sure you ask them if they want full screen Anamorphic or Letterbox on the digibeta tape.
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[Mike Green] “My system stops and starts if I try to edit it uncompressed (70meg/sec). I’m using an internal drive with lots of free space; no raid.”
Uncompressed HD is generally 125 – 200MB/s. You require a RAID to edit this properly. ProRes HD should really be cut on at least a two drive RAID as well.
Walter Biscardi, Jr.
Biscardi Creative Media
HD and SD Production for Broadcast and Independent Productions.STOP STARING AND START GRADING WITH APPLE COLOR Apple Color Training DVD available now!
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I want to do some pans and zooms, so make sense to bring the large uncompressed HD file into a regular dv ntsc timeline(at 16:9) and let FCP 6 reduce it to fit; so I would have some extra size for the panning etc?
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if you “pan and scan” that way using final cut pro it will look terrible when your done.
Final Cut Pro does not yet have the ability to rescale HD to SD without adding visual artifacting and aliasing. I wish apple would fix that since most editing apps can do this with high quality.
You would want to use After Effects or motion to do that.
Is that what your client wants?
Most of the time that would be a full screen 16:9 anamorphic (ideal for DVD Mastering) or 4:3 letterbox digibeta (ideal for broadcast)
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I opted for the ProRes 422 compression instead of converting to SD at this stage. Apple touts it as a way to work in HD on standard drives and it’s working great so far with one of my internal drives. 1280×720, HDTV 720p (16:9). For the panning I had to do, I enlarged a piece to 120% to allow for short pan.
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