Detecting static/noise in video

[tripecac]

I'm using Vegas Movie Studio 8, converting standard 8mm videos (captured via DV camcorder) to DVDs.

My 8mm camcorder is different from the one I used to take the videos. Often, there is a burst of visual static about half a second after the scene changes. I think the original camera must have had a surge or something whenever I turned it off and back on again.

Here's an example:
http://tripalot.com/issues/videos/static.avi

Anyway, it gets tedious having to watch each video looking for those bursts of static. I'd love it if I could find a way to automatically detect each burst of static, so that I don't have to watch everything. Do you know if there's a way to do that, ideally in Vegas Movie Studio?

Thanks!

[tripecac]

Is there a way to detect scene changes? That might help...

[tinker]

I think you are looking for something that does not exist.
Once you download your footage to a computer it is just one large file, no scene change brake or chapters. You just have to go though it, cut parts out and make a transition, if you like, between scene change, like regular movie.
You can always fast forward in your editing software.

[tripecac]

You know how audio software can detect pops and clicks, perhaps by looking for large, quick changes in amplitude? I was wondering if there are tools for detecting sudden changes in video as well.

[SLK001]

You're looking for the holy grail of video editing.

In audio, a pop or a click is not always noise (RE: unwanted). Neither are large, quick changes in amplitude. What works well for one source, is crap on another.

You would probably be better served by doing this manually, using something like VirtualDub. The timeline slider can get you to bad points fairly fast. Your eye is infinitely better at detecting these noise areas than any program would be.

For your sample, I cut out 11 frames. It now looks pretty good (provided you are interested in a car with the hood -bonnet?- up as your subject matter).

[tripecac]

Ah, okay, thanks!

(I've been doing it manually in Vegas, which is probably similar in feel to VirtualDub)

[Safesurfer]

DVdate has scene detection by content that may help. You can split the DV file at each scene change which may make it easier to edit out the static. See http://paul.glagla.free.fr/dvdate_en_scenes.htm for documentation.

[tripecac]

Hmm, I'm having problems with manual static deletion. For some reason, Vegas keeps on rendering frames that I deleted. (See http://forum.videohelp.com/topic353834.html for more info.) Could the static be confusing Vegas somehow?

Update: Never mind, I just needed to set the preview Quality to Good, Best, or Preview (Full). Now I can see the static frames.

p.s. Safesurfer, are you a Cope fan?

[Safesurfer]

Hmm, I'm having problems with manual static deletion. For some reason, Vegas keeps on rendering frames that I deleted. (See http://forum.videohelp.com/topic353834.html for more info.) Could the static be confusing Vegas somehow?

Update: Never mind, I just needed to set the preview Quality to Good, Best, or Preview (Full). Now I can see the static frames.

p.s. Safesurfer, are you a Cope fan?

Yeah, haven't heard much of his newer output though!

Glad to see you got it all sorted.

[edDV]

Hmm, I'm having problems with manual static deletion. For some reason, Vegas keeps on rendering frames that I deleted. (See http://forum.videohelp.com/topic353834.html for more info.) Could the static be confusing Vegas somehow?

Update: Never mind, I just needed to set the preview Quality to Good, Best, or Preview (Full). Now I can see the static frames.

p.s. Safesurfer, are you a Cope fan?

Still monitoring on the computer monitor eh? You can lead a horse to water...

[tripecac]

I need my DV camcorder for both capturing and monitoring, and it needs to be in a different mode (and have different wires connected) for either task. I'm still in the process of capturing all 30 tapes, so I just leave it setup to capture.