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April, 2002 updated 5/15/02
Okay, so let's move on to other DV related capture card issues. Here's kind of a third reason why some users buy 4:2:2 capture hardware for their DV edits, even if they don't use any graphics: Offline. Take the Aurora Igniter for example. This system comes in different configurations. At the base system (with no options installed), you have YUV hardware that comes with Y/C and composite video I/O, RCA unbalanced audio I/O and Motion JPEG-A as it's compressed codec format. The Aurora Igniter's MJPEG codec is touted as one of the best in the industry for a compressed codec. You can really crunch those video files down to very small sizes and still maintain great visual quality. Since FCP's DV-Offline cannot output to an external video monitor and you cannot change the ratio of the offline compression, the use of the DV-Offline function can be limiting for some. With hardware like the Aurora Igniter, an editor can capture hours of footage from a DV source to the MJPEG codec at any compression ratio they desire, still maintain good video quality and edit their project to an external video monitor in real-time. When the edit is complete, simply do a batch re-capture of the clips needed in DV mode via FireWire. Now when you dump your completed project back to DV, your source clips will have zero generation loss in transmission. Depending on how involved you want to get into editing, or if your needs are requiring that your mixed media stay at an optimal level and budget allows for this, then looking into an uncompressed system for FCP may be a good idea. If you're starting to incorporate a lot of rendered graphic clips and effects, then an uncompressed system may be even more of an incentive for you (again however, except in the case of coming from and going to 4:1:1 DV). For those using any high-end digital decks like DigiBeta, IMX, D-5, D-9, or DVCPro 50, then an uncompressed system should practically be required in your edit suite! For those using component analog decks like BetaCam SP or MII, uncompressed is highly recommended for the most seamless quality. But if you're outputting to MiniDV, DVCAM, DVCPRO, 3/4", or VHS, you may find NO readily observable difference between DV-native and uncompressed editing. If you're thinking of adding hardware
to create a FCP uncompressed system, will it be for editing purposes
or CGI purposes? Maybe Both? Most uncompressed systems have functionality to drive the After Effects comp window to an external video monitor by selecting this in the AE preferences. These include Aja Kona, Aurora Igniter, Digital Voodoo and Pinnacle Cinewave for starters. However all but Cinewave can do a continual screen capture anywhere on the desktop, which can be fed to a video monitor. This is very suitable for image applications like (only to find their values are out of range when you finally do bring it into FCP). For Cinewave users, please check out EchoFire software for desktop capture through your Cinewave hardware. Digital Voodoo and Aurora Igniter also boast the best codec quality available for FCP (and even rivals most non-FCP NLE systems). For people rendering CGI to an uncompressed system's codec, this is very important. More details on codec quality are discussed further in this article.
Systems like Pinnacle Cinewave and Aurora Igniter give the user the option to fit their I/O needs. Whether it's SDI or yucky composite, the user chooses. With Cinewave and Igniter, you can get an analog break-out-box (BOB) with component, Y/C, composite as well as XLR and RCA audio I/O. An Igniter base system comes standard with Y/C and composite I/O with unbalanced audio I/O for the budget conscious buyer (component BOB is optional). Cinewave also has a new Pro BOB that includes 10-bit SDI I/O, multiple channels of audio output (when FCP supports it) but amazingly no Y/C I/O (yes there is composite). Cinewave and Igniter also both have the option to have SDI I/O in conjunction with the analog I/O. It's entirely user selectable. The other nice thing about a BOB with multiple I/O is that all the outputs are active. Your component signal can go to your deck/monitor, the Y/C signal can go to another deck or monitor and your composite signal can go to a 'scope or VHS deck for instant client approvals. The Digital Voodoo and AJA Kona cards have SDI video and AES/EBU audio I/O built directly on the PCI card. This can be very limiting to some potential buyers, but shouldn't in reality. A true SDI suite can be extremely pricey to build, starting with DigiBeta. For people wanting the best quality though, this is a non-issue. Keep in mind that using analog component to SDI converters will never give the full benefit from a true 10-bit, digital source. If you're not coming from a DigiBeta type deck, then you're just not using the full potential of the Voodoo or Kona card's awesome quality with converters. Should this be reason not to get a 10-bit SDI system? NO! Absolutely not. In fact, it is technically better to have an SDI-only system, even if all you have are analog sources. When you buy a system that has built-in analog I/O, you are relying on the manufacturer's hardware to do the conversion. If you buy a dedicated analog to digital converter, you are picking the best converter within your budget. Additionally, if for some strange reason your built-in analog I/O goes on the fritz, you must replace the entire card instead of just a little converter. It's also note-worthy that having a long analog "snake" from your BOB to your PCI card can induce 60-cycle hum. If you have long SDI digital cables and short analog cables to the converter, you've successfully reduced your chance of 60Hz interference. A side bonus of having a converter (as opposed to the conversion being built into the PCI card for a BOB) is that you can pull the SDI converter and use it for something else should you need to do so. Let's look at the cost factor as compared to an analog BOB. Let's look at the AJA Kona SD. It has built-in SDI I/O. Everything is totally digital. For complete analog component conversion, you'll need a video converter to the Kona, another video converter from the Kona and an analog audio converter like the Midiman Flying Cow for AES/EBU. For the price of a Kona SD and these converters, you're spending as much (or less in most cases) than other systems with BOBs. Remember, with a converter, you get SDI and analog. Obviously a BOB makes things very convenient and tidy, but sometimes, this is at the risk of quality. One way to gain multiple video outputs on an SDI to converter scenario is to (1.) daisy-chain the analog signals one after another, (2.) use other outputs from your video decks, (3.) buy a video splitter/distribution amplifier or (4.) buy a quality I/O router/switcher. All these solutions are either free or fairly inexpensive. Digital Voodoo is coming out with a new
product called the "Compound" card, which according
to them will be released in late May 2002. This card adds built-in
analog video I/O to the card's already SDI-native structure.
Component, Y/C or composite video is hooked up via a little tether
snake by means of a little DIN connector on one end (on PCI card)
and appropriate video connects on the other end. To me this seems
like a week link in the video chain with this DIN connector.
For me, I would rather have BNC connectors on a BOB, or I'll
simply use a converter with proper BNC connections on it. Note
also this card does not have analog I/O. For me this whole idea
seems a bit funky, but for other users, it may be a Godsend. Is High-Definition (HD) in your facility's
future? Keep in mind that although the Cinewave
HD can capture and edit in HD, its dual stream real-time capabilities
are lost to allow for the HD functionality. Cuts only or render.
However, it appears that the new Kona HD system will have some
RT included in its system. Keep your radar on for developments. This card was really designed to work for film editing (and in some cases, in conjunction with an application called FilmLogic now owned by Apple under the name Cinema Tools), but I use the Film card as my secret animation weapon! You can even render your clips at a true wide screen (or custom) aspect ratio without the black letterbox, i.e., 720 x 328 with no letterbox instead of 720 x 486 with a letterbox. FCP can play back your non-letterbox, vertically smaller clip with all the real-time functions in place. With this technique in place, you can substantially reduce your file size by half. How? First, you're at 24 FPS, not 29.97 FPS, thus eliminating 6 uncompressed frames for every second. Next, and most importantly, you're cutting your vertical size, which will decrease the amount of pixel data needed for each frame. Take a 5-second uncompressed clip for example. At 720 x 486 @ 29.97 FPS, my file size is 100.1 MB. At 720 x 328 @ 24 FPS, my file size is 54 MB. Render times of animations will also decrease. How? At 29.97 FPS with interlacing, the rendering application needs to render a separate result for both the odd fields and even fields. You're basically rendering 60 frames for one second of animation, not 30. . With this method, your rendering 24 progressive frames per second, eliminating interlaced fields altogether. Additionally, you're shaving 6 frames off every second of animation to reduce render times. And if you're frame size is vertically smaller like the 720 x 328 example above, then you'll save even more render time. In some case, your renders could be cut down by 70%! Animators without the Aurora Film card can still render to 24 FPS, but in the end, they'll have to render 3:2 pull down to view it on a video monitor, which is an added time constraint. With the film card, you can play your 24 FPS render on your video monitor with real-time 3:2 pull down. No more rendering! Unfortunately, there are no other uncompressed hardware manufacturers besides Aurora that make a comparable film card to add to their uncompressed systems for real-time 24 FPS playback and editing within D1 resolution. This is really too bad, as it can both be an incredible time saver and creative tool. Not all systems have a full set of
real-time capabilities. How much real-time functionality can
you sacrifice for other needs you may require? So what about the "other guys"? Aurora Igniter and Digital Voodoo are single stream cards, so for now, their real-time capabilities are limited, but they do have some; most importantly the new FCP 3-way color corrector. The Igniter cannot currently do a real-time dissolve between two clips, but the Voodoo can in limited fashion. The Voodoo needs an incredibly huge RAID array hard drive system to accomplish this and can only dissolve for about 3 seconds. Still though, better than nothing if you have the hard drives to do it. So what real-time functionalities would be sacrificed for other needs you require? The Cinewave is by far the best system for real-time functions, hands down, but it doesn,t have other functions some of these other systems hold. Take for instance Cinewave's offline mode. It's touted as the worst in the industry. If you need a system with awesome online quality and offline quality because you capture hours of footage for your edits, then maybe a Cinewave system isn't for you. Another trade off might be customer support or product development. This is an area Aurora shines in. They've been known to update and post a new driver in a day or two from a reported bug from "Joe User". The Igniter is their product, so they can put all their resources into it as opposed to having dozens of products to attend to. Another trade off might be that you want to integrate your 10-bit SDI equipment into an uncompressed FCP system with no need for a break-out-box (BOB). A Digital Voodoo or AJA Kona card would be in order then. Maybe you're willing to sacrifice real-time functionality for the best available codec quality like Digital Voodoo or Aurora Igniter. This is the next topic. For many, image quality is their highest
priority. How does codec quality compare against each other and
what do they mean to your finished product? Let's go back to the 4:2:2 theories. If general video was uncompressed 4:4:4, then there wouldn't be issues of how well a codecs perform. They would all look exactly the same... flawless. The strength (and in some cases, the weakness) of codecs is how well it can maintain a YUV image or encode an image in a "compressed" color space of 4:2:2, which again is half the color space resolution of a pure 4:4:4 scale. And don't forget... it must do all of this in real-time! In terms of YUV color space and never rendering to an RGB color space most of these uncompressed systems do quite well. But who doesn't render graphics, effects or titles? When you do render, you're going into RGB color space, and in this conversion process, codecs can diminish in quality. The Aurora uncompressed codec (8-bit) and the Digital Voodoo uncompressed codec (10-bit) both have the best quality so far and visually look identical. No contouring/banding on gradients and very little RGB edge blocking or "mosquito edges" (which is tough to accomplish in 4:2:2 color space). When it comes to color filtering from YUV to RGB, these two codecs do it the best. However, if you "look under the hood" and really investigate, the Digital Voodoo codec maintains the highest pixel accuracy of any 4:2:2 codec out there. For some people, image quality is the most important feature of an uncompressed system, or they wouldn't go get an uncompressed system in the first place. Broadcast networks require the absolute highest quality possible of your master tape since they'll be broadcasting your beautiful work through a series of transmission loss over and over again before it hits a person's television set, which in most cases will be worst factor in the chain! If image quality is at the top of your
list, consider the Digital Voodoo product and the Aurora Igniter
uncompressed product. For those with 10-bit and digital SDI equipment,
i.e., DigiBeta decks, SDI monitors, etc., then Digital Voodoo
is for you. For those with a tighter budget and use analog component
decks (like BetaCam SP), the Aurora Igniter is a top choice.
So what about the AJA Kona quality? I personally have not tested
the new OSX codec yet, but will shortly. But keep this in mind... So what about Pinnacle Cinewave? How do they stack up in the mix? Where real-time functionality is Cinewave's ultimate strength, its RGB to YUV codec quality is its weakness. Even with the Cinewave 16-bit codec, the majority of pixels are not holding true to the originals. There is still banding/contouring in heavy gradients, blocky "mosquito" edges and an incredibly large file size to boot (40 MB/second). It's also note worthy that since 10-bit SDI SDI (via the Pro break-out-box) is going to the Cinewave 16-bit codec, 6 bits of information are not being used. Thus, the 40 MB/s file is inefficiently being used. To make things even more interesting, the quality difference in the Cinewave's 8-bit codec and its 16-bit codec can be very small in some cases. However, many Cinewave owners say their 16-bit output to NTSC/PAL looks perfect. Whether it's due to the Cinewave hardware or the inherent way video output can be forgiving on display, this can all be true. However the issues still stands... when it comes to RGB rendering with multiple Cinewave clips or multi-generation passes, this is where the codec can suffer, mainly due to its poor color filtering. Again though, when it comes to basic YUV editing with not much rendering, all systems pretty much fair equally. But remember this, codecs are software based. Pinnacle, at any time, could update or even re-write their codecs and achieve quality that matches or surpasses Digital Voodoo or Aurora Igniter. It's all about continued product development and customer support, something Aurora, on the other hand, does uniquely well in. In my opinion, Pinnacle should dump the 16-bit codec and write a 10-bit codec. Simply throwing extra bits at the problem doesn't rectify a solution. This way they could also maintain RT functionality, lower the file size and stay in-line with a 10-bit source. It's not about the amount of bits, but how they are used. Is 10-bit better than 8-bit? If the codec is written correctly, yes, it can. There have been huge debates on the battle of 8-bit and 10-bit, so I would rather stay away from "bit wars." Some say it's mathematically provable to achieve the same results as a 10-bit codec, but in reality (and technically), the 10-bit Voodoo hardware and codec is still the best for maintaining the most accurate pixel replication. It seems without a doubt though that 10-bit architecture and codec software is the future for all these cards and the migration has already started. Apple DV Codec: As a side note, let's also briefly discuss the Apple DV codec under QuickTime 5.0, even though this isn't an uncompressed codec like the ones mentioned above. Any QuickTime version prior to 5.0 (technically version 4.1.3) produced pretty ugly DV results. It is imperative a user has the latest QuickTime version installed in their Macintosh to get optimum DV results. By comparison, the Apple codec pretty much has the same quality as Sony and Matsushita hardware codecs. Likewise, Apple's DV codec quality is comparable to Canopus and Matrox software codecs. It's better than the C-Cube hardware codec used in the RTMac, DigiSuite DTV/LX, Pinnacle products, and the majority of broadcast video servers! Go Apple! So how do these different codecs visually compare in quality? In fact, how do they compare to other mainstream codecs? When I was first investigating different uncompressed systems and their quality against each other, one of the things I did was download each company's codec and run renders in Adobe After Effects to see how well they stack up in RGB rendering. I created a codec web page, which shows how all the codecs render a complicated test image in After Effects: http://www.onerivermedia.com/codecs What are the highlights of all these uncompressed systems?
Okay, so maybe you're not going to SDI or HD. The different qualities in video decks and their prices are all over the board. Do you buy used or new? In some cases, buying a used deck from a reputable source can be a very wise choice. And these days, a high-end deck can be purchased for a great deal. I bought a used Sony BVW-70 BetaCam SP deck for the deal of the century. The guy that sold it to me even let me use it at my facility for testing and inspection for a full week before I even paid him for it! These deals exist if you look hard enough. But decks are only part of the equation. Do you need a nice little audio board to tie in all your sources to FCP? What about your external video monitor for playback? Do you need high-end reference audio monitors or will cheap ones be okay for your application? Single display or dual display? CRT computer monitors or LCD flat panel displays? Do you edit BetaCam SP but also need a DV deck since you're getting new clients that shoot on this format? Do you need to buy a nice quality flat bed scanner for photos? What about tape stock? You should always have enough tape stock on hand for surprise edits or client needs. You never know if they'll need two BetaCam SP masters, or ten VHS window dubs! Oh, and the thing I hate the most... cables. Do you bite the bullet and buy high quality cables for both video and audio? You should, it can make a big difference. A good printer is always nice too for videotape labels and such. Making everything look professional can really add value to your product. To date, Aurora Igniter is the only system that can run uncompressed video with Ultra DMA drives striped to a RAID array (although a SCSI RAID array is still recommended). Many uncompressed Igniter users run Ultra DMA hard drive systems and have had great results. This in itself can be a huge money saver for people. Let's not forget about all the software you'll need too. Final Cut Pro can work fine by itself, but in reality, you should have an arsenal of other tools. Adobe Photoshop seems to be used in any project, whether it's video related or not! Buying and learning Adobe After Effects could really add artistic value to your video projects with nice looking effects, bumpers, titles, etc. Adobe Illustrator can be a lifesaver too, especially when you want to maintain a client's logo with a perfect alpha channel in any resolution. For some, using a quality 3D application can add value to their workflow. Newtek Lightwave 3D is my favorite, but there are numerous 3D apps with assorted pricing to choose from. Do you need to purchase a video camera? This can be as tricky as buying the uncompressed system itself! As you can see, things really start to add up, and making the right choice for all of them can be mind-boggling. With enough patience and self-education, you truly can achieve the ideal system for your budgetary needs. Is there really a "perfect system"
that can cover everything? For now though, the key is finding a system that fits your budget and needs. Even with a fat budget, or no budget at all, each system has its pluses and minuses. In some cases, staying entirely in DV and not buying an uncompressed system can be the best choice for some people. It's really about doing your homework and how your educated findings fit into the format you need or use in relation to your output or client requirements. If you do end up buying an uncompressed
system, it's important you find out what you need first
or a reseller or company spokesperson, whether they are correct
or incorrect, may give you the impression of what you think
you may need. Best of luck, there's a lot of toys out there.
Just make sure you get the right ones! copyright©2002 Marco Solorio All screen captures and textual references are the property and trademark of their creators/owners/publishers.
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