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Unread 30-04-2003, 17:48
DanL DanL is offline
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Quote:
Originally posted by JosephM
BTW Guys, he wants good video screen capture.
'good' is relative.

I captured some of my robotics videos from a competition from the above-camera. I'd say I got a 'good' capture from a $400 camcorder as opposed to a $3000 camera like the kind sanddrag uses. If you have a $3000 camera, go for it. For the rest of us, well....

Also something that you want to consider is resolutions and resizing like Al began talking about. By 'video,' I suppose Ryan is talking about he wants to combine video footage with computer captures (Inventor, MAX, etc.) to make a little promo tape. If you're doing any serious work with those programs, you're using atleast a resolution of 1024x768. With my little camcorder, the highest capture size I could get is 720x480. So, there's going to be a significant amount of screen reduction anyways. Al talked about how standard tv signals (i.e. svideo) is 640x480. So basically, you want to take a 1024x768 resolution signal, resize it to 640x480 (for svideo), send it to the camera, and let the camera do whatever the camera does. This in itself is a considerably lossy process - not to mention the loss that you'll expierience in recapturing. I'm sure the more money you push into your equipment will get better results - i.e. a $3000 pro camera as opposed to a $400 family-geared camcorder. My advice is unless you're really into digital video editing, accept the lossiness and move on - that money can be spent on better things.

Actually, now that I think about it, this kind of process is VERY lossy. You're probably better off looking for some kind of SOFTWARE that captures the screen input.

Also something that you need to consider is size. Video can get REALLY REALLY REALLY big. I mentioned I captured some robotics videos at 720x480. Even AFTER DivXing them (DivX is a compression scheme that has been called the MP3 of video), a 4:22 long video file at 720x480 is 140megs. Although I did use a video/audio bitrate that was probably a bit too high (hmm... actually, now that I think about it, the bitrate was way high), it does give you an idea of the size that you'll need for 'good' videos. You'll also need a few gigs of harddrive space to store the raw footage BEFORE compression.

Anyways, the point of all this is that 'good' comes at a price. If you're a videophile, then sure - empty out the wallet. For the rest of us, well... yeah.

In conclusion: look for a software program for capturing your screen. There's gotta be something like that out there.
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Dan L
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