Comments

Liam_Vegas wrote on 6/23/2005, 7:44 AM
Several ways to do this.. An easy with is to use the Mask feature in the pan/crop tool. Other ways include adding a track above and re-size/reposition a solid color black media generator.
Nat wrote on 6/23/2005, 8:50 AM
I think he means in time...
Liam_Vegas wrote on 6/23/2005, 9:43 AM
Wow.... I guess you may be right. How ON EARTH would you make any sense of a 1/3 of a frame? I don't quite get it.

Maybe Quantize to Frames is what he needs... but that's only truly relevant when trimming audio...

I'll be interested to find out what Avanti was really thinking of.
JJKizak wrote on 6/23/2005, 10:38 AM
I would also like to try that to experiment with video noise phasing, one track upon another but the entire clip would have to be able to be phase shifted linearly in relation to the other. Might work then again might not. I figured it would need just a teeny bit to get a different noise print per frame.

JJK
Chienworks wrote on 6/23/2005, 11:48 AM
I don't think that will work if you're using the same clip both times. You would have to have captured the original scene on two different tapes simultaneously. If you're simply using the same clip shifted slightly then Vegas will quantize them when rendering and you'll end up with identical frames lined up with each other, which won't make any difference.
JJKizak wrote on 6/23/2005, 12:51 PM
Your totally right. It would have to be done at capture.

JJK
farss wrote on 6/23/2005, 1:32 PM
1) You cannot trim 1/3 of a frame, I guess you could make a clip run for 1/3 of a frame less (the entire clipe would have to be reampled) so long as the next clip (which would also have to be resampled) started at a 2/3 frame offset). Ultimately though you must output complete frames. You can of course trim audio by 1/3 of a frame.

2) If you want to try an interesting and simple way to cancel noise or clean up very dodgy video try using motion blur. The effect produces frame integration. Obviously if you have a lot of motion you may not like the result but in some situations MB can be a real lifesaver.
I've had old VHS where the titles had hideous chroma flagging and noise, with 10 frames of MB it looked pristine, the background shots looked rather ethereal but overall it looked way better. Sometimes I've used MB and masked say moving lips, a bit of fiddling around but results were totally convincing.
Bob.
Chienworks wrote on 6/23/2005, 3:30 PM
Actually at capture isn't even soon enough. It would have to be done at the camera level while recording.
JJKizak wrote on 6/23/2005, 4:38 PM
The main objective (for me) would be to take an old VHS tape full of noise and garbage and make it look like a mini-DV tape through processing. I think someone will eventually come up with something even if the processor cost is a couple million. Even on the same lines as Sonic Foundry Noise reduction for audio, take a small sample of the video noise with a circle then push the button, wallah!

JJK
Chienworks wrote on 6/23/2005, 5:42 PM
Doesn't VirtualDub already have a filter for this?