Fred Jodry
Forum Replies Created
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(Guess!), .vob files might be some form of pointer files, subdirectory list, containers for time code blocks, or something else like menus. The answer hasn`t been e- mailed in my door in a mere hour. I haven`t even typed out the e- mail yet. But please stay tuned to the same bat time, same bat channel, as I ask someone who does it (on the editor) how, and as much as possible, why. I could sure ask why too as he also sent me one of those idiotic DVD types of, my, own show. Guys, type in what your machines, OSs, and available editors are. Some questions generate multiple answers possibilities.
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Andrew, give me your e- mail while I start researching this. The main way is to import the data into a video editor. You`ll be able to copy the DVD on to a folder on a hard drive. The editor will be able to get past the pointer files, unneeded menus, bogus bootups, and so on to yield usually, compressed audio + video file pairs you can reuse. (Diversion to dissolve editing follows:) Dissolve type editing requires converting the files there into uncompressed .avi or quicktime files for mixing (editing) with others of the same format if this type of editing is needed. educationalbroadcasting@hotmail.com
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Tom, Y, c~R, c~B is a rematrixing of R, G, B (and synchronization). Although it`s a pain to get a matrixing box to convert either one to the other, they`re made. The only advantage to using Y, c~R, c~B is that it has a clamped luminance signal Y ready to use for B/W uses. The common Synch- On- Green variation can cause green- purple black level drifting nightmares. Start a pencil notebook on equipment availability, technical terms, cable types, troubleshooting, and so on. Audio combining, synchronization, and extraction notes will hit the same notebook. Don`t insert AACS codecs and protection schemes during production or editing, one reason is that it will make your work more archivable; they can be put in at sendoff.
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Easy, if you`re not sure what security files configuration and horsepower you need, borrow a unit of what you`d like to get, zero it out, prepare it, put it through it`s paces, then thoughtfully zero it out before you return it. Here`s what security filtering you need: none. You need no security file (filename) filtering to protect your files from yourself, do you?
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What I want is a working machine and a full circuit diagram helps. It`s time for this cow to create the right unit when the usable units are in short supply.
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Nader, you described a display that goes purple in the lowlights and stays plain white or bloomed slightly greenish in the highlights. Just take your monitor to the TV repairman in your town. He`ll know how to adjust lowlight grid bias, screen voltages, highlights drive, and how to hit the weak gun with the CRT rejuvenator the same as I do. In fact, if the weak gun is spiralling down, he can over- do it on the CRT rejuvenator on the other two guns to weaken them into balance and you may still get years more use out of the display. The one thing a lot of TV fixers don`t know though is that although you should be experimental, most CRTs need for the screen voltages to be lowered and the grid voltages to be raised as the tube ages. Naturally, watch for a computer monitor to hit the curb with the same type of CRT as yours and don`t throw out the old one until you know better. The problem might be a chassis voltage drifting instead of a bad jug.
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Bingo. About twice a year, you set the lowlight or background potentiometers to a neutral dark grey representing black with the color knob normal and colorless black video coming in from the source. You set the highlight drive potentiometers or rheostats to an even white with full white video(-One of these adjustments usually minimized and the contrast control on the front pushing pretty high). When accessing “color temperature” adjustments on a monitor, it`s usually best to set the above adjustments on each “temperature” type then settle for the one that lacks grayscale problems the most. Monitors are not supposed to display an out of neutral grayscale in production as receivers are meant to be neutral too. (In other words, discard the discardable alternate temperatures). According to the NTSC, cameras may divert from reference white for artistic reasons but monitors add and subtract each primary display color from luminance gray in composite uses. [Cameras diversion follows]. Real white is around 4500 degrees Kelvin and you can balance your camera to it on an average outdoor scene by stepping in the open area and feeding a reflection off of a styrofoam sheet that`s pouring 4/5 blue skylight and 1/5 yellow sun. If you have a very directional white balance place marked in your viewfinder, try aiming it at the DARK TOP of a cloud in the sky. These are my own average daylight suggestions. A flashlight through a mild blue filter is a common daylight setting for a camera, and no filter on the flashlight for studio tungsten. My RCA TK-76 camera has an easy white balance. I turn the contrast pretty low, the brightness pretty high, then unscrew the viewfinder knob so I can white balance the camera in it`s own viewfinder. Ikegami hotshoe cameras can`t do this. I`ll get off this neutrally set color cameras diversion to get back on monitors. Monitors also have 3 (or only one) screen voltage adjustments. The lowlight, maybe -36 volts (variable!) grid voltage sets “black” or dim level. the screens (+75 volts for a week tube, +450 volts for a strong tube) set middle slightly low gray. The drive controls set plain peak or almost peak white, and a CRT rejuvenator followed by 5 minutes of running recovery sets the overwhites maximums the cathodes of each color will do. Unfortunately, tweaking all these controls means that the focus voltage will have drifted a bit, needing it, and the convergence adjustments to have a going over. If a focus adjustment knocks the colors a bit,you only have to touch the screen voltages to get back on track. My monitor is doing the “opposite” of a crt rejuvenator at present. A rheostat dims the cathodes almost a volt because these electron guns (Gross Bertha Howitzers) are presently shelling the other side to dust. Someday I`ll have to brighten them up to normal. Ikegami monitors have the screens and grids labelled incorrectly as each other, both on the monitor and in the manual. Sony monitors often have predistortion amplifiers that set grayscales and should never be tossed on a crt rejuvenator. Their pathetic cathodes seem to use an emitting layer on metalloid instead of thick kaolin and will immediately bridge to the grid without any advantages. You compensate for their weak guns by getting out the soldering iron and making their screen voltages adjustable to ridiculously low voltages positive of the cathode when they go weak. Did I cover everything? Fred
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“This would be the perfect scenario for the SSD drives”, J Garchow
Unless of course the vibration goes up enough to make them and the other equipment buy the farm. I`ve been thinking about using an outfitting of SSD to increase the speed of my Mac but aside from the rather pressing price of the drives, some manufacturers of SSD drives try to foist high density memory types on the unsuspecting buyer. Trying to find the right boot host cards and utility cards (hopefully the same card) can also get in the way. -
This is a little tongue in cheek but it tends to be true:
When not at work you tend to read and have the book, at work the manual. So wait, if you need a manual try going to a Hamfest and see if you can find one or one that`s similar. The same result for visiting TV stations. What I hate is when the manual is in the Library, the broken or unlearned equipment is on location, and the electricity and lighting crew doesn`t feel like going to location until there`s production activity. Recipe for doing things the slow way. Unfortunately it occured to me last night that it takes around 50 pieces of equipment to move latent vision, sound, and story from where it`s at to “between the headphones and behind the window”. It`s no wonder that someone is going to call me today over a piece of gear and ask, “$700?” and my answer will be, “No, much too much.” Not unless it`s glued on top of the seat of a 1923 Renault Model T or an International fire truck worth much more than it. Digital has made TV production go from easier than Radio to harder than Radio. Everywhere you have some analog equipment sucking it in you have to have an analog to digital converter next to it as well as a “cmos or bios” that tells a computer what it is, as well as a digital to analog converter to monitor or play it back. We know the rest. This stuff, especially the cmos, keeps us from easily building the endless equipment we need to get past the equipment storage. Try and find a piece of computer equipment that runs without software in an Operating System computer age. My Oscode Midi Box 2! Hi! -
The Author and Teacher, Peter Utz might have written an HD book before he retired. His previous books were just right for most people. Good at hopping between the technical stuff and the other world. His e- mail is something like, putz (at) att.net? You can look him up on the internet.