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February 14th, 2009, 12:40 AM | #16 | |
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The benefits of Cineform are awesome for PC editing. I don't fully understand how it compares to ProRes, though. I used to think that ProRes was the Cineform of the Mac platform, but not that Cineform works on Mac and "supports ProRes," it turns out I don't know what the differences are at all. But I know you (Dan) work off a laptop when you're in the field, so the current incarnation of Cineform and it's dig. tool (called HDLink) won't help you much, based on how it brings in the files. There is hope, though - maybe. Several months ago, I was complaining to a Cineform tech about HDLink and he hinted that there would be a new version of that coming out "soon," and I got the impression that there would be batch tools. Maybe that is still in the making? |
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February 14th, 2009, 01:25 PM | #17 |
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Cineform would be the bomb if it supported multiple a space (and time) optimized workflows.
Workflow 1: I get home, copy my files to a folder, tell Cineform to create intermediates for everything, go to sleep, and edit the next day. Workflow 2: I copy my files to a folder, open Vegas, open a clip in the trimmer, create a region, and drag it to the timeline. I'm asked for a name, or can select an automatically numbered name. The segment is re-wrapped as a shorter copy of the original file (quickly), a Cineform intermediate is then created (thank goodness for multiple cores). I can edit immediately (and slowly) with the original sub-clip, or wait a bit and edit with the Cineform intermediate. The reason that I like to have a frame to frame match of proxies, intermediates and originals is that if there is ever a problem or a concern with quality or size, I can replace the proxy/intermediate with the original copy without losing timing information. Workflow 3: Similar to workflow 2, only no processing occurs. I simply trim clips, choose the regions, name the files and make a batch list. Once complete, I tell it to create the original sub-clips and intermediates. I return to the computer later to edit. This is best when I have fewer cores, and when I want to select my subclips as fast as possible without the CPU and HDD doing other chores. Am I missing anything?
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February 14th, 2009, 06:39 PM | #18 | |
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February 15th, 2009, 07:58 PM | #19 |
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Is there any advantage to using Cineform over ProRes in FCP?
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February 16th, 2009, 10:15 AM | #20 | |
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Regarding number 1: see our visual quality analysis pages comparing CineForm quality versus other compression that are sometimes used in post: Quality Analysis. As a quickie about this CineForm visual fidelity it up to 12-bit precision and supports up to 4:4:4(:4) chroma. Regarding number 2, we have been using all the Intel coding tricks for quite a while with heavy threading and SSE code Regarding number 3, we support AVI and MOV wrappers on both Win and Mac platforms for broadest compatibility. There are many system features built into CineForm compression that we'll save for a different class! |
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February 16th, 2009, 10:17 AM | #21 |
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Codecs are different than wrappers. Windows (AVI) and Mac (MOV) define specific wrapper layers underneath which exist the compression formats. This is done so the OS itself doesn't have to deal directly with a compressor. Once a codec is installed it obeys the interface mechanisms defined by the OS and the wrapper, at which point it becomes available as a general resource on the system to all other applications who support the respective AVI or MOV layers.
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February 16th, 2009, 10:29 AM | #22 | ||||
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February 16th, 2009, 10:32 AM | #23 | |
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February 16th, 2009, 10:36 AM | #24 | |
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February 16th, 2009, 10:47 AM | #25 |
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Simple question, good question. The answer is really workflow dependent.
If you intend for an HD 4:2:2 workflow only inside FCP then you're probably better off with ProRes because of its tight integration into FCP. It is why we added ProRes as a destination format within Neo Scene. However, if your workflow involves applications outside FCP on Mac, or Windows, then CineForm can be a big help because of our cross-platform capabilities. Even on Mac but outside FCP, ProRes files are interpreted as 8-bit files instead of 10 bit files (at least from earlier tests we performed). CineForm files are always 10 bit depth. CineForm also introduces the unique concept of "Active Metadata" which is best described as akin to an "Adjustment Layer" in Photoshop where you can add color adjustments as layers without disturbing the underlying file. This is a brand new concept that CineForm supports on both Win and Mac, and we have many, many features planned for this. Active Metadata is always performed in real time, and is application independent. So AM data applied in FCP will be properly interpreted in PPro or AE or QT Player. We have more discussion about Active Metadata controls in our Tech Notes section. If you need a 4:4:4 workflow, up to 12-bit precision, then CineForm is the only compressed solution that allows this. CineForm supports up to 4K (4096) spatial resolution also, but it is well known that FCP stops at 4000-wide. ProRes continues to work at higher spatial resolutions (4:2:2 chroma only) but its bit rate grows considerable. |
February 19th, 2009, 07:46 PM | #26 |
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Canon 5DII to 24p through Cineform
Okay, I am sure I am going to show my technical ignorance, but since this thread is about Cineform and the Canon 5d MKii, I have some questions:
In capturing to with Neo Scene, I assume I have not access to ask Scene to actually capture the footage as 60i. My reasoning is that I could then feed that into something Like DVFilmmaker, and render to a 24p. Heck, I have even used NeoHDV to render 60i material to a decent looking 24p in some projects.... Am I barking up the wrong tree ?
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February 19th, 2009, 08:26 PM | #27 |
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Cineform in Premiere Pro CS4
I've tried the latest Neo Scene and it appears to map color 0-255 to 0-255, with no option to map to 16-235. This means, when I import the Cineform file into Premiere Pro, I lose a lot of shadow and highlight detail as Premiere Pro won't let me access anything outside the 16-235 region.
Even if I reduce contrast or change brightness in Premiere Pro, I just end up with a brighter clipped black - the 'hidden' colors never become accessible. I have tried using the "render max bit depth" option and the procamp filter filter (as documented on various websites), but this doesn't make any difference with Cineform files. Previously I tried Neo HD and was able to use CoreAVC or FFDShow to squeeze 0-255 into 16-235. I lose some color resolution throughout the range by doing this, but this is preferable to losing 0-15 and 236-255. My questions are: 1) Is there a way to map 0-255 to 16-235 with NeoScene, or do I need to stick with Neo HD/CoreAVC to do this? 2) Is there a way to get Premiere Pro to access the 0-15 and 236-255 data (e.g by increasing brightness to shift 0-15 into 16-32 thus losing 219-255)? 3) Is there anything else I'm missing, or am I completely wrong with my understanding of what is happening? Thanks. |
February 19th, 2009, 11:13 PM | #28 | |
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http://www.dvinfo.net/conf/attend-wo...perwhites.html EDIT: It's about highlights, but it works on the shadows, too. Just bring up shadows with RGB curves or the fast color corrector. Do *not* apply any other effect whatsoever. As soon as you apply any other effect (including RGB levels), the image goes to pot. It amazes me that any NLE, especially a "premiere" one, would take the very little quantization space available (just 8 bits) and make it even smaller. Vegas and many others get this right. Hopefully CS5 wont be so limited. |
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February 19th, 2009, 11:30 PM | #29 |
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Yes, this is the technique I was trying, but it didn't do anything for Cineform files. Didn't do anything for 0-255 Lagarith files either. So maybe that technique is only compatible with certain codecs, like Canon XH-A1 HDV files.
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February 20th, 2009, 03:23 AM | #30 |
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Yes, I downloaded the trial of Neoscene and am having the same problem with Premiere. In fact, opening the transcoded files in Windows Media Player also shows the crushed blacks and highlights.
I filed a ticket with Cineform support and they advised me to download CoreAVC and set it up as described in this blog: CineForm Insider: Correction: Canon 5D is fine, tools are wrong. I tried all this and it didn't work. Support advised me to check an untranscoded clip in Graphedit to make sure that the CoreAVC decoder was being used. It appeared to be and I sent a screengrab to them. Still haven't heard anything back. If you figure it out please let me know! |
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