View Full Version : 4:4:4 10bit single CMOS HD project
Obin Olson November 29th, 2004, 09:58 AM that is not needed! this board can do it if it's got a pci-x slot! I am not sure why I get FIFO overflow but it is NOT the cpu and should not be the pci buss..I am sending all the stuff off today for our programmer to have it all in his hands to work on and finish the thing
BTW the Bolex lenses look AWESOME..much much much better then the c-mount CCTV lens I have been using
Marin Tchergarov November 29th, 2004, 01:00 PM For sure the "FIFO overflow" error is software/drivers related!
As example - now I have similar issue -capture with DVIO.exe(a small,no preview,but RockStable capture application for IEEE 1394 ONLY)
gives me 100% CPU load and dropped frames in windows1* and 00% CPU/no dropped frames in windows2*!
* windows1 and windows2 are winXP SP2 installations on different partitions,not visible each other.
Steve Nordhauser November 29th, 2004, 04:19 PM Obin:
FIFO overflow means that the FIFOs on the capture card that buffer the streaming data are not being emptied as fast as they are filled. This means that you are running out of PCI bus bandwidth. On the frame grabber systems, the data is unpacked - 10 or 12 bits takes two bytes. The maximum pixel rate you can run at is 50-60MHz clock since that will put 100 to 120MB/sec across a bus that is rated at 132MB/sec max (not continuous since your OS likes to wander around, do some house cleaning, sweeping and ....washing windows at its whim).
Obin Olson November 29th, 2004, 09:49 PM Steve:
how come I can push 65mhz on one of the machines here at work? and the DFI board will only push 35mhz!! this does not seem ok ..am I wrong? when will the 64bit FG be out?
I am having a hard time taking this 32bit stuff much longer...
Wayne Morellini November 29th, 2004, 11:37 PM I don't think that it is the amount of memory bandwidth (lack of dual channel to split program from data might be something though). The amount of bandwidth that the card takes up (around 100MB's, to a number MB's persecond is a little like saying that the needle may overwhelm the hay stack, but that would need like a third party Elephant to try and sleep in the hay stack and sit on the needle, thus detroying the haystack in a rage to get out.
What Steve said is right, but I wonder why the same fifo's on a card have no problems in one machine and are in another (plus the speed issue), I still thiunk chipset issue, that the drivers have to handle. But doesn;t the chipset have it's own FIFo buffers to handle transfers to PCI bus devides?
I think the problem is that PCI32 capture cards (without compression, buffer or packing) are really like good for 720p.
Thanks
Wayne.
Régine Weinberg November 30th, 2004, 04:05 AM maybe everybody knows about, but:
http://www.elis.rug.ac.be/ELISgroups/tfcg/projects/microdis.html#mosarel
they have the reolution
merci
Marin Tchergarov December 1st, 2004, 02:02 AM Obin, did you try these BIOS setings on DFI board?:
1. "Disable Unused PCI Clock" or "Auto detect PCI clock"
2. "PCI Latency Timer"
[Edit] something is wrong with the forum engine - long posts didn't pass...
Wayne Morellini December 1st, 2004, 07:05 AM Has a four or ten thousand character limit (forget which) ussually tells you that they are beyond x length.
Rob Lohman December 1st, 2004, 07:34 AM The maximum length of posts on this board is 10.000 characters.
You can use the link "[check message length]" underneath the
input screen how much characters you are using. If you need
more simply split the message up into multiple posts (which
usually is a far better way anyway).
Obin Olson December 1st, 2004, 10:30 AM looks like windows XP is causing the FIFO overflow..does anyone know of windows 2000 drivers for the 855 Intel chipset and some drivers for SATA that work on the DFI board? that is the only problem with 2000, the drivers for SATA don't seem to work and the system is running the drives in PIO mode.
thanks for the help
Marin Tchergarov December 1st, 2004, 04:09 PM <<<-- Originally posted by Rob Lohman : The maximum length of posts on this board is 10.000 characters.-->>>
Then the problem is in my "TVset" :) -my "unsuccessful" post was about 700-900 chars...
Obin: here - http://www.abit-usa.com/downloads/driver/drivers.php?categories=1&model=79 you'll find "Intel Chipset driver v 6.2.1.1001" and "Intel Application Accelerator RAID Edition v4.10" -these are for all intel chipsets and all windows versions and not for Abit only.May be they are on DFI web page too...
You can try this trick on winXP (or w2k) :
start new installation (assume disk c: is fresh formated) and on the 1-st blue screen ,when you see the mesage (bottom) "Press F6 to ... bla-bla" press the F5 button! Then choose "Standart PC".
That way You'll lose some extras -no Hiperthreading,turn off is possible only by the Power switch on the case (press and wait 4 seconds) ...
However in that new installation the windows will be forced to follow the hardware desires and not bully them.
Obin Olson December 1st, 2004, 04:34 PM All hardware has been sent out to our programmer for final code writing and tweaking. As things stand we have the capture software working with 1/4 pixel quad preview in RAW 8bit color and Black and White. We have save to disk with 12bit raw files and 8bit raw files. We have 16bit tiff export. we have full control of the camera from the UI. the last steps are to get the software bug free stable and finish all the details of UI etc. After this it's a matter of getting CineForm or someone else to support the effort so that we can edit and do post work with the footage on a compressed version that will stay in 10/12 bit from shoot to final product.
Wayne Morellini December 1st, 2004, 09:23 PM Cool, Marlin, have to look information up on the exact differences, any ideas?
To All:
The problem here is that unless we export to a standard format, then there will be workflow problems. The only way to get around this (apart from write our own editor, or rewrite Cineralla to Windows and Linux) is to write a simple plug in for some good editors, one top end, one middle, and one cheapy to satify everybody. The good news, is that if the editor in question has a internal RAW master format, or just the ability to handle raw files once passed the parrametters to define an internal Raw format, then it is simply a matter of installing a convert routine, and raw format parameters, as the plugin.
So what do you think, suggestions for Windows, Mac, and Linux (Cinerrella)?
Where is Rob S anyway, haven't seen him for a while?
Rob L
I'm getting problems trying to submit as well, it just says connection closed by remote server etc. I used to be able to reload the page then paste text and submit, but not even that is working now.
Marin Tchergarov December 2nd, 2004, 03:53 PM <<<-- Originally posted by Wayne Morellini : Cool, Marlin, have to look information up on the exact differences, any ideas?
-->>>
Wayne,if you mean the differences between Standart HAL (Hardware Abstraction Layer) and ACPI HAL -I don't know all of them, nor I have links or so.
All I know(feel) is:
1. May be it's BIOS related,but when I install windows2000 (no Service Pacs) in ACPI mode-
all devices will use IRQ9 regardless what is set by the motherboard and the conflicts on IRQ sharing is the main reason I know this stuff-my Matrox based Editing station was very good on freezing random...:) ...and just found confirmation in google: http://64.233.183.104/search?q=cache:WsqW6ktfweoJ:www.turtlebeach.com/site/kb_ftp/5774036.asp+%22press+F5+instead%22&hl=en&lr=&strip=1
2. Many 3D games have much better performance (10%-30%) in Standart PC Mode - not checked (3-4 years ago I've read an article about that)
3. In my experience "Standart PC" mode is much more stable -no more blue screens of dead if once hardware is configured and work properly.
4. I guess pooling the devices is more optimized (more simple?) in Standart PC mode
5. If you have 2CPU system -only 1CPU will be discovered and used in Standart PC mode. May be "MPS Multiprocessor PC" mode is the equal mode for 2CPUs -I don't know since I don't like 2CPU systems. However Hiperthreading will work only with "Advanced Configuration and Power Interface (ACPI) PC" mode.
6 .No "turn off" and "hibernation".
...cannot remember more...
As "Happy End" I'll say that winXP and win2003 are 1000% better in stability and performance than win2000...
P.S. Quote from http://www.fceduc.umu.se/~jesruv98/info/acpi/acpi.html
...ACPI forces the peripherals to "wait for their turn" as they are used which is actually great if you have many peripherals since you get stability while using those periherals, but bad if you only have a few since performance is lost and no stability is gained.
P.S.2 I like the plug-in idea!...And Avisynth could be the "The choosed one"...IIRC such a plugin already exists???
Obin Olson December 2nd, 2004, 06:03 PM What we need is a group effort to build plugins that will work with the RAW files we are saving and or work with some sort of compressed 10bit files like CineFOrm
Adrian White December 2nd, 2004, 07:56 PM Would you be able to to edit 8bit avi files using Vegas Video 5?
Obin Olson December 3rd, 2004, 02:55 AM Vegas can edit 8bit fine. I have done it with both 720 and 1080p footage..what we need is the 10/12bit support for editing and also the support for a compressed format
Obin Olson December 3rd, 2004, 03:08 AM I guess I should also look at the MAC and Final Cut Pro as an option because of the native high-bitdepth suport of FC..I could look at encoding into the SheerVIdeo codec and editing on MAC...this would work for now untill some stuff is working on the PC
Barend Onneweer December 3rd, 2004, 04:39 AM At this point Premiere Pro 1.5 has 8-bit internal calculations, but if you work with 10-bit material in a cuts only timeline, the output to 10-bit will preserve all 10 bits. It's not perfect, but I'm guessing Premiere Pro 2.0 will support higher bit-depths.
So as long as you do filtering and FX in another application (e.g. After Effects) that supports higher bit-depths, you'll be okay.
Editing in RAW would be an idea, but might need too much work to implement. I'm not a programmer, but seeing how much work it already takes to get these capture apps to run... So the alternative would be to convert the camera RAW sequences to a format that is already widely supported. Also to streamline postproduction I'd hate to have all material exist in some kind of proprietary solution. So the conversion to Blackmagic 10-bit, SheerVideo or Cineform CODECS come to mind, with the first two offering support on both Mac and PC platforms.
The conversion from RAW to RGB could be done in Photoshop (batch processing), or After Effects (using something like Ben Syversons plug-in). It would be like 'developing film' before starting post. Not ideal, but no dealbreaker to me.
On a side note, I realize that people may be reluctant to work with uncompressed 10-bit HD because of storage and bandwith issues. I just put together an internal RAID5 system using a PCI-X SATA-RAID adapter with 8 Maxtor SATA drives (7200rpm 200GB). I'm getting 230 MB/s sustained write and 360 MB/s sustained reads. That's sustained - not burst. It cost me around 1700 dollars for 1,4 TB of effective RAID5 storage...
So there's a thought for 'affordable' uncompressed HD editing on PC.
Bar3nd
Jason Rodriguez December 3rd, 2004, 12:17 PM Are sustained writes always much slower than sustained reads?
Marin Tchergarov December 3rd, 2004, 01:01 PM Barend, Your thoughts sound PERFECT!
Thank You!
Jason, sustained writes are sometimes slower,but sometimes faster... in "real life"!
Joshua Starnes December 3rd, 2004, 01:17 PM Originally posted by Obin Olson : I guess I should also look at the MAC and Final Cut Pro as an option because of the native high-bitdepth suport of FC..I could look at encoding into the SheerVIdeo codec and editing on MAC...this would work for now untill some stuff is working on the PC
I still think this is the best solution. I know you've been working on PC because that's what you've got - and it's a lot easier to put one together for recording. But once you get to editing, for this project at least, you're better off on a Mac. On top of the Mac's native bit-depth support, you also have native DVCPROHD support - when you've finished your color correction and mastering, you have a widely used tape format to export for showing to broadcasters, distributors, or to use for a film out. Versus going all the way on PC where you going to have to cart harddrives around when you want to show some video (or film out), and the codecs you used as well.
Barend Onneweer December 3rd, 2004, 05:27 PM Choosing for a Mac solution because of DVCProHD support is silly. You could just as easily transfer to DVCProHD through HDSDI on PC (unless you want to edit in DVCProHD...). But the thought of using DVCProHD as a transport medium to get the material transferred to film is even stranger. You wouldn't want to lower resolution (if the source is 1080), compress and limit bitdepth to 8-bits and then transfer to film. Just rent an HDCAM SR deck for one day and transfer to HDCAM SR through HDSDI and get the cleanest picture on film as possible.
Anyway, FCP is a very viable solution, but not much more viable than what's out there on the PC platform, not for long anyway. But this is somewhat off topic.
Jason, like optical drives, hard drives tend to write slower than they read. It's just less work to read than to actually modify the bits. So these results were along what I expected from single drive benchmarks. They are also 'realworld' results, that reflect the HD editing situation.
Well, back to developing camera's ;-)
Good luck and keep up the great work everybody.
Barend
Rob Scott December 3rd, 2004, 05:54 PM Where is Rob S anyway, haven't seen him for a while?Mostly lurking -- still too busy to get much done on the project.
Joshua Starnes December 3rd, 2004, 06:43 PM Just rent an HDCAM SR deck for one day and transfer to HDCAM SR through HDSDI and get the cleanest picture on film as possible.
My understanding is that HDCAM is also 8-bit, but I could be wrong about that. It is most certainly going to compress the stuff we're going to be shooting anyway.
However, it doesn't matter. My point was that DVCPROHD was already supported by the software - you don't have to buy or rent any other equipment to get it to a point where someone else can watch it or it can be filmed out. It would save money and workflow headaches. And your average filmgoer or video watcher isn't going to see a difference between something that was sent to film or DVD at 1080p, or if it was a somepoint downconverted to 720p before getting to the point where they are looking at it.
The point of this project is to make something of a professional quality that doesn't cost too much and is more or less headache free. Why add more hassles than you have to?
David Newman December 3rd, 2004, 07:07 PM HDCAM SR supports 1920x1080 4:2:2 in 10bit. You are thinking of regular old HDCAM (which you generally won't use for film-out just like you should never use DVCPRO-HD for film.) For film-out D5 or SR will work as they are both full resolution 10bit compressors. All HD decks are HDSDI based, there is not point in rendering to DVCPRO-HD. There is no advantage to a disk based DVCPRO-HD, it loses one third the resolution over your source, and that is before it applies 8bit compression. Apple promotes DVCPRO-HD as a convient format, but it is only convient when used with a $27k deck and Varicam source (much lower quality than the cameras being discussed here.) A $1k-$2k HDSDI card allows you to send full 10bit HD to any desk , not just DVCPRO-HD. It seems if you go to the trouble of shotting and editing in high quality, you would rent an appropriate deck to master to.
Rob Lohman December 4th, 2004, 06:53 AM To all: there where some problems with the server. It has been
rebooted and everything should be working fine again now!
Wayne Morellini December 4th, 2004, 07:27 AM <<<-- Originally posted by Barend Onneweer :On a side note, I realize that people may be reluctant to work with uncompressed 10-bit HD because of storage and bandwith issues. I just put together an internal RAID5 system using a PCI-X SATA-RAID adapter with 8 Maxtor SATA drives (7200rpm 200GB). I'm getting 230 MB/s sustained write and 360 MB/s sustained reads. That's sustained - not burst. It cost me around 1700 dollars for 1,4 TB of effective RAID5 storage...
So there's a thought for 'affordable' uncompressed HD editing on PC.
Bar3nd -->>>
Yes, that has allways been the downside, but still cheaper then heaps of 35mm film stuff. That is why we shouldn't get to carried away with the price of other stuff, if we want to keep it affordable. But in the end, when you have a job, it is going to cost, unless you can backup to server tape!
The whole idea here was to do 4:4:4 raw for the benefit of the amazing clarity and detail that lesser formats ussually loose. The other problem was that while we can debate that RAW bayer equates 4:2:2, or 4:2:0, quality the truth is that there is a mismatch between the two pixel spaces and you are going to loose. So going o these comrpessed tape formats, or to 4:2:2 defeats the purpose a bit. If there is a $20 chip out there that could comrpess to lossless and visually lossless 4:2:2 or 4:2:0, I would say go for it. But without a lot of investment, this is the best for us.
Jason, like Barend said, particularly nowdays it requires a lot of power to flip a bit in the drive write cycle, where as sensing is still easy peasy.
To all, plugins:
If you are going to go to plugins, as said before, you might find native pathways, there might even be selectable bit depth format support above the packages specified max bit depth, built into the routines, support might be even easily programmable. Don't depend on what the package tells you or even the programming documentation sometimes, look at the programming API carefully for extras.
With this sort of thing, if people want Apple, the first person that goes to Apple and gets their support for a universal bayer 4:4:4 8-20 bit, multi-resolution format may take the market.
I don't know much of editor internals and which do plugins propperly, but would I be right in suggesting that (apart from the top editors popular here) that Vegas Lite would be the best mid line editor to make a plugin for? What would be the best low priced editor to write a plugin for (under $100 to free)?
Wayne Morellini December 4th, 2004, 07:39 AM David, a thought on your last post. We are dealing with 4:4:4 footage there must be RAW 4:4:4 tape format for things like Starwars, you could theoirectically hire, and then backup your drives onto something like this when production is over. Then you could re-use the drives. But lets look at it another way, we have 4:4:4 bayer, that's 8+ bits per pixel, 4:4:4 three chip is 24-bits per pixel. that's three times more than you need, so if we treat it as a data stream we could store three times more. Also we could use a lesser tape format as a data drive to backup to, any suggestions?
Now, speaking of suitable editors, if anybody is going to spend $1K, or $500, how's your versions of cineform, do they both support the bayer cineform system?
David Newman December 4th, 2004, 11:59 AM Wayne,
Yes to all of that. HDCAM SR does support dual link HDSDI what carries 4:4:4:4 RGBA -- maybe overkill for bayer data. But as they is no "mastering" tape format for raw bayer, YUV 4:2:2 single link HDSDI is perfectly suitable even for film out. I know that because I just saw the first feature film posted on a desktop PC using a compressed digital immediate (CineForm's) and presented on film in a large theatre (it used YUV 4:2:2 10bit for output.) It was a cast and crew screening so I'm still swarn to secrecy on the details.
The bayer development is still under wraps -- can't give details, but it seems like many of the proposed workflows only need a stand alone version of Prospect HD without the bayer stuff. Recording RAW bayer data to disk would allow of post conversion into 10bit YUV based CFHD fairly easily. I let you guys know when the stand alone version is available (it is coming soon.)
Barend Onneweer December 4th, 2004, 12:53 PM Mastering to bayer images doesn't seem like a very good solution to me. The only situation where you'd want this is if you edit in RAW images, and don't do any postproduction treatment whatsoever. I wouldn't want to convert my CGI and other special effects and treatments to bayer images...
I think the focus is best kept to an affordable high-quality acquisition workflow. As long as there are solutions to convert the RAW images, everyone can edit and master in a a format that suits their needs and budget: DVCProHD native (for minimal bandwidth and storage needs) to 4:4:4 uncompressed HD and visually lossless solutions like Cineform somewhere in between.
Bar3nd
Jason Rodriguez December 4th, 2004, 01:45 PM Why is everybody trying to edit HD natively???
The best approach by far is to edit a low-res NTSC DV-based, or M-JPEG based offline and then online the footage without any compression, etc.
Use that uncompressed 12-bit source as your master. Color correct the RAW footage, do whatever you want, but I think it's actually kind of silly to try and edit full-res HD when it means you have to compress, etc. and jump through countless hoops to "edit in HD".
Also while I think that Cineform or even DVCProHD is a nice format for editing, it hamstrings you if you have a good editor who's an AVID or FCP guy, not a Premiere Pro person. Apple's DVCPro won't work with AVID, and Cineform won't work with either program. This isn't a pro-mac, anti-pc argument, this is what are good trained editors familar with. Maybe with small independent stuff PremierePro or Vegas might be a nice choice, but by far the most experienced professional editors are going to be on AVID and then FCP.
So the best, most editing-app agnostic approach is an offline/online approach. Use a common everyday Quicktime format like DV that will work with AVID or FCP or even PremierePro, render to that codec in NTSC, edit your offline, and then online in whatever package you want with a high-bit-depth DPX or TIFF file sequence.
I guess if everybody here wants to edit stuff themselves then they can do whatever they want, but when you start to farm your editing jobs out to professional working editors (not in-house corporate industrials where there are a lot of Premiere Pro guys, but they aren't film editors), you're going to have to face a market that's dominated by AVID with FCP creeping in.
Also keep in mind that there are a lot of Meridian and AVBV-based AVID's still out there cutting film material in Hollywood or for Hollywood-destined stuff. Some Adrenalines too. Those guys, unless the Adrenaline folks have the latest updates can't edit in HD or these fancy codecs.
David Newman December 4th, 2004, 02:15 PM Jason,
You are "hamstrung" what choice you make there is nothing new to that; comprises are everywhere in the post-production workflow. Choosing a off-line vs on-line workflow is your choose, we know there are clear advantages and disadvantages to both. The workflow I just had involvement in, was off-lined on a AVID and on-lined on Premiere Pro run Prospect HD. There where no PC vs Mac issues here, the mixed workflow performed there individual tasks as needed. In the future we are going to see more direct on-lining not less, as the technology allows for this preferred workflow (overcoming the issues of storage and bandwidth.) There are far fewer "hoops" than you would imagine, editing in HD is getting easier, and biases against compression are fading rapidly. You just need the right sort of compression. ;)
Joshua Starnes December 6th, 2004, 12:58 PM Why is everybody trying to edit HD natively???
The best approach by far is to edit a low-res NTSC DV-based, or M-JPEG based offline and then online the footage without any compression, etc.
I'm not interested on editing HD natively, though if I could do an HD online on my Mac, I'd certainly jump at the chance. But it's not essential.
But it's eventually got to be cut somewhere - and while we hunt around for a good cheap codec that does what we want it to, we have to keep in mind that probably someone besides us is going to have to cut with it to. I for one don't look forward to having to carry harddrives with my images and codecs around with me when I want to get an online edit or a filmout done. Which is the main reason why DVCProHD seemed like a good idea at the time. Should have known it was too good to be true.
David,
This may have been asked before, but are there any plans for CineForm to support FCP?
David Newman December 6th, 2004, 01:08 PM Joshua,
Yes they are plans to support FCP in the future. Our codec technology is very portable and I'm sure it would run very well on G5s.
David.
Régine Weinberg December 6th, 2004, 02:42 PM is this a thread about edit
or camera ??????
I do guess a new thread about edit would be better
sorry
only my 5 cents
Joshua Starnes December 6th, 2004, 05:51 PM <<<-- Originally posted by Ronald Biese : is this a thread about edit
or camera ??????
I do guess a new thread about edit would be better
sorry
only my 5 cents -->>>
It's both, but more camera than edit. Whatever software we use to capture the images, if we can't edit them, then we've wasted our time and energy. So that has to be decided now as well.
Juan M. M. Fiebelkorn December 6th, 2004, 09:42 PM Doesn't anybody here know the old and good DLT tapes?
Fastest models go up to 72 MB/s
Jason Rodriguez December 6th, 2004, 11:25 PM Yes they are plans to support FCP in the future.
As another FCP user, this sounds really great (especially since you are the only one out there with a native Bayer codec)!
Jason Rodriguez December 6th, 2004, 11:29 PM You may have a much easier time editing with a compressed tape-based format like DVCProHD or another intemediate format like Cineform on the PC before you go down the DLT route. That's going to cost you some serious $$$'s, money you might as well spend on hard-drives which are faster and random access.
Juan M. M. Fiebelkorn December 7th, 2004, 12:44 AM I was just talking about data security never said to edit using directly the DLTs, that would be a nonsense.
Also if you want to output to a DVCproHD, wouldn't be better using DLT instead?
If a HDD hits the floor what happens?
What is the result if the same things happens to a DLT ?
I fact DLT aren't more expensive than disks or DVCproHD.
How much does a DVCproHD tape deck cost?
A 600 GB DLT tape costs something around $180.
How much goes for a simillar HDD ?
A DSR11 DVCAM tape deck costs around $2,500.
The highest SDLT tape drive costs around $4,000.
I can't see your point when you are saying $$$....sorry.
Also I didn't know there were disks faster than 72 Mbytes per second..... :)
Also if I were doing some shooting and need to travel a long a distance, going from cars to planes, etc , I'd for sure choose a DLT and be happy the rest of the road!!!!!
PS: (not related with you Jason) Sometimes it looks to me that people isn't talking about doing things the cheap way but more of some kind of price madness with ridiculous numbers like wanting to replace $ 2000 dollars products investing just $100........
What we are talking about here is having an "affordable" (doesn't mean cheap, bargain,free or the like) way of shooting High Definition with top quality.
I can't understand why if someone is able to buy a 30,000 new car he cannot invest $20,000 or $30,000 on professional equipment which is supposed to be used to generate some revenue.
What is the usual monthly income for everybody here?
Unless you are from a semideveloped country like I am, with a standard monthly income of less than $300 and technology prices from developed countries, then that kind of discussion begins to have no sense.
Sorry if I went too far...
Wayne Morellini December 7th, 2004, 03:48 AM Nothing extra special, some new micron models, no Altasens yet.
Wayne.
<<<-- Originally posted by Ronald Biese : is this a thread about edit
or camera ??????
I do guess a new thread about edit would be better
sorry
only my 5 cents -->>>
When there are cameras to discuss we tend to discuss that, otherwise we fill in time, keep the thread alive, and discuss other issues. Works out fine now days (in early days too much discusion at once, but now fine).
<<<-- Originally posted by Juan M. M. Fiebelkorn : Doesn't anybody here know the old and good DLT tapes?
Fastest models go up to 72 MB/s -->>>
Yes I tried to talk about this 6 months, or so, ago. $180 for 600GB tape is too close in price to an array of cheap 200GB harddrives, is there any cheaper? I suggest that existing decks could be used to backup drives (rent one or go and rent time on one) can DLT be rented day by day? HDD very durable, but would not trust them for long term archival storage, so tape would be good for that. In the end maybe we should pick the best HD format and convert finished productions to that, then studios, and TV could easily use that.
----------
Any thoughts on the new Sony HDV, it's mpeg2 compression apparently goes down to 4.7(4.3??):1. How good is it compared to vissually lossless?
To all, if we can get DLT/Tape cheap enough, we can backup to it and reuse more expensive drives. So we don't buy $3K of drives for each production.
Storing in Bayer Raw. This would gives us best quality to work from and re-edit in the future.
Joshua Starnes December 7th, 2004, 01:10 PM Any thoughts on the new Sony HDV, it's mpeg2 compression apparently goes down to 4.7(4.3??):1. How good is it compared to vissually lossless?
As I understand, it's fine as long as you don't need to move the camera at all.
If you try to pan or boom or do a nice dolly move - artifacts galore.
Wayne Morellini December 8th, 2004, 11:28 PM Good, that's all I needed to hear, the higher variable compression stated doesn't help in the most crucial area.
<<<-- Originally posted by John Nagle : Wayne,
Do you have any more info on the new Sumix cameras, I went to their site and there is no mention of them there. -->>>
Yeah, sorry I knew there was something I forgot to cut and paste in the rush, the address:
http://optics.sumix.com/products/cameras/index.html
John Nagle December 8th, 2004, 11:46 PM Thanks Wayne,
I found them, no real move forward there for the moment for what we want here.
One other thing of interest from Sumix, they are talking about a 3 sensor IBIS5A camera with global shutter that might be of interest.
Wayne Morellini December 9th, 2004, 12:26 AM Where did you read that, I am unobjective on the idea, a three chip Alatasens insread yes, yes, yes, with pixel shift like the XL1 and DVX100 has that canbe used to get much higher res, the IBIS struggles with colour global, maybe a new version of the IBIS5B or C with increased fill, but the A, I don't know?
Actually go over the dvx100 mod thread and look at our discussion over there at the moment. That camera will record a HD frame much bigger than 720p ;) If the same thing were done on a three chip 720p camera we would get much more than 1080p likely with better accuracy (definetly better sensitivity) than bayer 1080. If we went for it on a three chip 1080p camera we would end up well and truelly in SHD territory (exactly where we need to be). Very good thinking.
Steve what do you think, oh great camera Guru?
Wayne.
Jason Rodriguez December 9th, 2004, 01:07 AM Xpress Pro HD:
read about it here:
http://www.avid.com/company/releases/2004/041208__xpressprohd_prod.html
So first FCP, and now AVID (which also gives Windows people access to DVCProHD)-maybe Premiere Pro next?. I don't think they're using Quicktime, but at least you now have access to native DVCProHD on Windows, so you could theoretically go back-and-forth losslessly by using a tape deck and firewire and not doing any effects till your final edit (so that you can transfer the native bit-stream to tape without any renders and generation loss).
Juan M. M. Fiebelkorn December 9th, 2004, 01:09 AM (take note I'm not Steve, nor a camera guru ;) )
Really......how can I say this......coming from you dear Wayne...
Such a GREAT IDEA!
really good, pixel shift.I should have thought about it.....
Richard Mellor December 9th, 2004, 09:37 AM the 49.95 upgrade to hd, on avid express pro, is pretty cool too.
John Nagle December 9th, 2004, 11:52 AM Obin,
If you are around please let us know how you are getting on with the SI3300.
|
|