DVL-Digest 663 - Postings: Index FCP audio G4 Mac DVD RAM Drive relative qualities SCSI wide and narrow tips from pros transfer 50mbps-DV (SDTI) VX-2000 vs. DSR-PD150 FCP audio - Adam Wilt I was wondering what people are using for audio level monitoring in FCP? The level meters of whatever deck I have connected via FireWire, be it the DHR-1000 I have in my studio or the DSR-20 I usually use in the field. > Also, does anyone else get out of sync problem on capture I haven't -- at least not yet! Cheers, Adam Wilt G4 Mac DVD RAM Drive - Adam Wilt So it was developed just for archiving/removable storage I guess? Are > DVD Ram discs a Mac only format, that can only be read on Mac DVD Ram > drives? It's cross-platform if you write the disks in UDF format. If you format the disk as HFS+, of course, it's Mac-only. You haven't seen much DVD-RAM action on PCs yet, but the drives are available if you look for them. DVD-RAM simply hasn't taken off yet, and won't until the larger-capacity drives become more widely available. The market confusion between low-density and high-density DVD-RAM, the added FUD caused by DVD-RW, and the plummeting costs of CD-R and CD-RW haven't helped! > Why would one want to put data on a 30 dollar 3 gig disc when > they could put 640 Mb on a 1 dollar disc that is cross platform? Because (a) the disks are only around these days, and (b) they're BIG compared to CD-RWs, which when you have to save off 10GB of data look kinda puny and slow. > Has anyone here actually used the drive for this? And why? I similarly scoffed at the DVD-RAM drive in my G4 when I got it in February, but this weekend I'm schlepping huge amounts of material onto a couple of DVD-RAMs because it's the most hassle-free way to move the stuff off hard disk I have. The cost per bit on CD-R/CD-RW is still a bit lower, but when I factor in the time spent swapping CDs, DVD-RAM turns out to be surprisingly attractive. Cheers, Adam Wilt relative qualities - "Perry" David posted: >I would agree with everything in your list but the 1". The bandwidth of 1" is far superior to BetaSP and MII even though its a composite format. Despite that shortcoming, it still lays down a better signal.....< I hasten to repeat the list belonged to Adam Wilt, although I wouldn't disagree with most of it. I got offered an almost new 1" Sony BVH machine a few days ago, for nothing! Sadly I don't have room for it, and we decided that it ought to go to a worthy cause such as a college anyway. The bandwidth differences are less in PAL. I only ever did one serious production on 1", when I 'recreated' a famous TV film showing the railway journey from London to Brighton in 5 minutes, The scheduled journey was just over an hour but they warned me there would be two extra stops because of engineering works, and in practice it would take between 70-75 mins. The BVH-500 portable recorder only took 1 hour spools, but I found that I could overwind a spool with about 75 mins of tape with it flush to the outside of the reel. I got my friends at PAG to make an extra large battery pack, and it all worked very well. I was in the cab with the driver looking out the windscreen, which I'd thought to bring cleaning stuff for. There were a few enormous drops of rain about halfway, and one crushed bug which slowly oozed across the edge of frame, but otherwise uneventful. I had about 2 mins of tape left when we finished. You wouldn't think twice about achieving this now, and the tube camera pictures are nothing special, but it seemed a real adventure at the time. Perry Mitchell Video Facilities http://www.perrybits.co.uk/ SCSI wide and narrow - Perry Mitchell >I can't seem to find a reasonable explanation of SCSI-2 Fast and SCSI-2 Narrow, and if the two are interchangeable.< SCSI-2 offers both these possible increases in data speed compared to SCSI-1. 'Fast' doubles the clock speed and 'Wide' doubles the size of the bus. If you use both you thus have a data speed increase of four. I'm not sure how universal this is, but my Quantum Atlas 'wide' drives can certainly be used on a 'narrow' bus. You need a converter/connector and (if I remember) you need to set one of the little jumpers. SCSI has moved on of course, the last ones I bought are Ultra160 with a potential data rate of x16 compared to SCSI-1. tips from pros - "Perry" >By the way Walt, the scene with the saturation problem was pretty light. However, it was lit with florescent lights, could that be the problem?< Yes indeedee! Rather than give a full explanation here, start by reading the 'Articles' on my web site: http://www.perrybits.co.uk/ Now 'florries' can have very variable color temperature characteristics, I once found 23 different tube color types in my local Electrical store and that doesn't even start on all the specialist types used for video and photography. In general the more efficient types have a very strong green response and little in the red and blue. A video camera is less able to differentiate between the subtle difference between red and green that our eyes see, and the result is a very low color saturation, particularly in facial tones. The art of improving this (assuming you cannot replace all the tubes for 'warmer' variants) is to add extra lighting to improve the important parts of the shot (usually faces) without it being obvious. If you need to do this over a large area then you need some big guns! As well as extra color you usually need to improve the modelling, florries usually give a very flat light that comes straight down; horrible! One amusing story - for obvious reasons I like to turn off florry lighting whenever possible. I once did an interview in a high tech office building, and there were no light switches! The whole lighting system was controlled by a central computer (that nobody on site could access) and movement sensors in each room. These turned off the lights if nobody moved for 10 minutes. I did think for about 3 seconds of trying to do it with everybody keeping as still as possible, but decided it was too silly! Perry transfer 50mbps-DV (SDTI) - Adam Wilt I for one would love to see DV50 thru firewire... We can and do come thru > SDI of course but the machines that do this and the requisite input cards > (or an Avid) etc are more expensive than a 1394 transfer solution.... My own feeling is that the expense and scarcity of native-format transfer of DV50 is a large factor contributing to the less than explosive growth of this otherwise extremely attractive format. > I presume all we need is a Firewire Driver and a Soft DV50 codec (and a > cheap DV50 deck with 1394). Am I wrong? Basically you're correct. We could quibble about details, but essentially this is what's needed. > Oh yah and an FCP that is DV50 savy. All you need is a codec that plugs into QuickTime's infrastructure, and you're good to go. FCP is format-agnostic. Define a new preset for the DV50 codec and you'll be set. > Not to turn this into an advertisement but what solution does Omneon offer? Massive amounts of fibre-channel RAID, shared across 1394 networking. Imagine a format-agnostic SANcube on steroids with multichannel video I/O, with the video accessible as QuickTime files over IP as well. http://www.omneon.com. Not for the faint of heart or thin of wallet; current systems start around - and go up from there -- too steep for the small shop, but attractive to folks looking at stacks of ProFiles, MediaStream or MediaPool servers, or the big iron from EMC or SeaChange. Cheers, Adam Wilt VX-2000 vs. DSR-PD150 - "Perry" Carroll posted: >Has anyone got a good explanation of a good use for "user bits" on the 150? The manual is certainly obscure as to their possible application.< I'm testing a DSR-250P at the moment which I suspect is identical to the PD-150 in most features. The User Bits can only be used in the DVCam mode. You can set a single frame of timecode, ie. HH:MM:SS:FF and perhaps use the different parts of the code to represent things like tape reel no. and scene no. Alternatively you can set the system to record real time onto the User Bits. Perry Mitchell Video Facilities http://www.perrybits.co.uk/ (diese posts stammen von der DV-L Mailingliste - THX to Adam Wilt and Perry Mitchell :-) [up] |
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