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September 19th, 2006, 08:32 PM | #16 | |
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September 19th, 2006, 09:43 PM | #17 | |
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September 19th, 2006, 09:52 PM | #18 | |
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September 19th, 2006, 10:04 PM | #19 |
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Thanks Paolo. Another question; are you using the JVC deck HD50? I suspect that when I try to export back to tape, it's really the deck that causes the hiccups (because while it's going on and I am watching it on an HD monitor, all looks okay but the picture hiccups are on tape).
To be specific: 1. Does FCP have to re-encode the timeline back to HDV and then export that back to tape? If yes, how long does it take (Avid is about 3.5:1 ratio)? Also, is export to tape frame accurate (can you record the master say at 10;00;00;00)? 2. Can you transcode HDV 720 say to 1080i and/or downconvert to 480i?
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September 19th, 2006, 11:28 PM | #20 | ||
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Jiri.
I don't have the deck and I don't write back to tape. I save all the footage on multivolume DVDs, so I can't help you there, sorry :) Quote:
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September 20th, 2006, 02:48 AM | #21 | |
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Paulo, (alongside FCP studio) I'm about to take delivery of a new 24" iMac (2gb Ram, 2.33ghz...) - I don't suppose I have that many options for delivering HDV to this machine aside from FW to capture...the iMac does not have card slots so I'm presuming I won't be able to utilise a HD connect box or Black Magic card? From what has been said on here recently I feel I'm looking at a workflow such as DVHSCap (in mM2T files) - MPREG Streamclip (convert to quicktime file) - apple DVCPRO etc I'll probably follow the workflows posted by tim dahswood, david knaggs amongst others. Of course if FCP soon allows native 25p editing and I personally find the quality to be high then I'll use that, but it's good to know there are other (if a little more convoluted) options. |
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September 20th, 2006, 02:49 AM | #22 |
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...forgot to ask if any of those workflows would need to be adjusted if you already have 'compressor' - thinking more of the final down conversion stages.
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September 20th, 2006, 07:57 AM | #23 | |||
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September 20th, 2006, 11:06 AM | #24 | |
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Thanks Paulo...just hope it's an update rather than FCP v6 as I've only just purchased this :(
As for Shake, the company I've just purchased my mac and FCP from (at a good price) are currently selling this for nigh on £2000! I presume this has only recently become a plug-in for FCP? Looks like they haven't updated this s/w on their site - that's some price leap - apple and amazon have this for around £300! I've glance over the 'tree' structure which indeed looks interesting. Quote:
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September 20th, 2006, 12:17 PM | #25 | |||
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Is this going to affect the image quality? It can. Will you able to see it? Only tests can confirm it, but usually it's the case. If two instances of the same frame are not exacly the same, bit-by-bit, than you have altered the clip. FCP allows you to set the compression/encoding algorithm used in any sequence. This means that you can keep the original codec or decide to use a different one for the rendered files. Lemme explain: We have frame A (HDV), and we apply the effect F to it. Where does the resulting frame go? There are two choices, FCP can render the effect in real time thus not requiring any storage and applying the effect every time you watch a given frame. For intermediate frames, this means that it has to compute the frame from the last keyframe, apply the effect, and show the frame on screen. Some effects just can't be applied in this way. Magic Bullet is one that comes to mind. Time remapping is another. In those cases FCP has to take frame A, apply effect F and generate and store a frame B. B will be played and exported from that point on. Now, if you use the HDV codec for both input and output, it means that FCP will recompress the GOP containing that frame. Hence, you have a recompression even when the codec doesn't change. Because HDV is temporal compressed, the resulting frame B might be quite different than the bits generated by taking frame A and applying the effect F. For exmaple, because of the sequence of cuts, it could be now an intermediate frame when originally it was a keyframe. If you have a uncompressed or intermediate codec used for the render files the landscape changes quite a bit. The HDV frames are decompressed and then stored on disk. Each frame is a stand-alone entity, it doesn't depend on keyframes and can simply be referenced by any clip/sequence withotu further computation. When applying the effect, the resulting frame B will have the maximum fidelity afforded by the effect and the processing power of the NLE. When you export your final sequence for delivery you can simply create a reference QuickTime file. This is basically a collection of "pointers" that point to the individual clips in the rendering files. The speed of this export operations is phenomenal, just be sure that you fully rendered your footage. At this point FCP doesn't need to re-compress or re-process the rendered frames. Do you need to do this? It depends. It depends on what you shoot and what you need to do with the footage. If you play with chromakey, the above workflow is a must. I just wanted to make clear that just because ou're using native HDV codec doesn't guarantee that you will not re-compress your footage. It's unavaoidable and it's the nature of the codec. Hope this helps. |
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September 20th, 2006, 12:26 PM | #26 |
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And there is always the option to offline your sequence in HDV native, and then simply change the sequence codec to uncompressed (for output to HDCAM SR for example.) FCP handles rendering in 10-bit space so this method would give you the workflow speed of native HDV capture and editing, but output quality of one-step HDV to 10-bit Uncompressed conversion. You could also convert to 1080P at this stage. Very fast drives or a RAID array and Kona or Decklink card would be required to output to a deck.
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September 20th, 2006, 03:00 PM | #27 |
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This is a great thread guys. Thanks to Stephen, Tim, Paolo, et al!
Reading this thread (several times at this point), it would like there is no outright winner in the NLE wars, with maybe FCP taking the lead in October. Do any of the NLEs have a specific advantage over the others? IE - is one better at doing a film-out transfer and one better at doing a DVD only release? Are there any other, non-image, areas where one is superior, such as sound or compositing? Or are they all more or less slightly diferent flavors of the same dish? Thanks again guys, this has been a very helpful thread (maybe a sticky?) - john evilgeniusentertainment |
September 20th, 2006, 10:19 PM | #28 |
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It seems to me that page one of this thread is dedicated to PC and page 2 is deicated to Mac (so far).
I say pick your poison (PC or MAC). On the PC side I advocate and use Liquid for ProHD and can offer help in just about any regard via dvinfo.net or Creative cows Liquid forum. There are all kinds of solutions that can work and I think Cineform is pretty good for PPro but the easiest most direct method of editing ProHD (any flavor) on a PC is Liquid from Avid. It just works and works as advertised with every aspect of ProHD and DTE. Now, clearly, the technology doesn't get in the way of creativity and it puts a person at ease knowing they can be creative and not worry about post. The workflow is solid and predictable without work arounds. We are quite confident in the workflow and the expected results using Celco eXtreme Nitro film recorder & i³Ci (i cubed chemical intermediate) or Arri laser. S.Noe
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September 21st, 2006, 12:16 AM | #29 | |
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September 21st, 2006, 04:11 AM | #30 | |
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Once I start using FCP with the mac I'm sure it will make much more sense to me. Cheers, Dave. |
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