Bret Williams
Forum Replies Created
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Bret Williams
July 21, 2005 at 11:35 pm in reply to: How do you block out or blur out someones eyes? To make them look “undercover”I’d probably just use crop for stuff this simple. Mattes take longer to render and aren’t real time. Blur is rt and so is crop.
OT- am I the only person that feels compelled to crank the brightness on the TV when the interview someone in silouhette?
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I’ve been there. I used qt to output something once when I was used to cleaner. So when QT uses bytes (8 bits to a byte, base 8 math carry the 1, etc.) I think it’s basically 8 times the rate. So if you’re used to 200kb (pretty low really) then I think it’d be around 30KB. There’s something to the upper and lower case. I think bytes is upper and bits is lower. But the problem is nobody seems to conform, so it doesn’t really matter.
Look at it this way, uncompressed video is 600KB a FRAME. So multiply that by 30 to get the KB/sec. 18000KB/sec at 30fps, 9000KB at 15fps. And that’s uncompressed! Let’s take it down to DVCam, 5:1. That’d be 1800KB/sec at 15fps. Now shrink the frame size to 320×240 which is 1/4 the size and you’ve got 450KB/sec data rate.
So that’s roughly double the rate you were using. You were only using half of the data rate of a full on DV broadcast quality signal which is 450KB/sec at 15fps and 320×240 size. Let’s not forget your frame size was actually smaller too.
Obviously the goal is to use an extremely compressed version, not a full quality qt for the web.
Wow, that was some fun math. I wonder if any of it was even close to right. 🙂
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Just wondering, what wasn’t free about the free tutorials I mentioned?
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Sorry, the directory I meant to paste in… https://www.bretwilliams.com/nlediting/images/quicktimes/
They’re all sorensen 3 with mp3 audio track. 500kbit/sec, 15 fps.
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Your 4 minute clips are around 60 megabytes! https://www.reginahammond.com/video/ Are you setting the data rate to 200 Kilobits (proper) or 200KB (kilobytes – whoa!). Cleaner works in kilobits. For DSL you can make a 500 kbit rate mov at 320×240 that instantly starts playinig and doesn’t ever stop. QT exports are referred to in KiloBytes. I can’t remember the exchange rate, but I think you should limit it to around 40 kiloBYTES. Maybe even less with yoru small frame size. FWIW, I’d increase the frame size to 320×240 for sure. Here’s directory of some of my QTs.
For a 4 minute video, like on your site, you should be looking at about 10megabytes. 6 times less than what you’ve got.
But hey, after it downloaded the 60megs, they really looked sharp! 🙂
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Since when does the computer sound come out speakers connected to firewire. Never has that I know of. Possibly you’re used to working with some other system or card that allows the system sounds (qt and itunes are system sound) to come out the card audio. It’d be nice.
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Google brought up the obvious – the macromedia web site. https://www.macromedia.com/devnet/mx/dreamweaver And a zillion others.
I assume you mean other than that?
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Bret Williams
July 20, 2005 at 3:30 pm in reply to: EDL Trace, or, “compilation reel” layoff and re-captureSounds like capturing to something other than tape is kind of a hassle to me. With tape, you just keep the project file (or edl, etc.) and recapture or reedit from the original tapes.
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Well FCP blows Avid away on that one. Whatever you name the media will the the name of the media ON the hard drive. You don’t actually need the original project anymore. They’re just QT clips on a hard drive in a file folder named what you named the original project.
On Avid, when we did this kind of thing we created a main project where all was digitized and common sequence and effect elements were kept. We’d then import those bins into whatever current project we were working on. It would be nice if in FCP the bins were separate elements like Avid, but they’re not.
However, you may find it helpful that FCP can open MULTIPLE projects at once. Although I really don’t advise it for beginners or Avid transients. If you do so, open the other project, copy and paste the clips or sequences you need, and immediately close the other project. Otherwise you might just start creating sequences or digitizing media in one project when you thought you were in another. Then, you delete one project or media from a drive, thinking that it’s done, approved, whatever and you don’t realize you just cannibalized another project.
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You can set up the svideo as an out as an alternative to the DV output. In version 3 it was a great way to get the real time onto tape before they had real time effects out the firewire port. The gamma was pretty wacked whenever I tried it. I used it on the laptop, and on the G4 with a graphics card that had an svideo out. People were buying those cards just for the svid out so they could get rt out to ntsc.
So there’s a setting in there somewhere. But since rt goes out the firewire now, why wouldn’t you use that Jon?