Sorry if I've posted this in the wrong area, but this seemed to be the right place. I've uploaded a short clip of a video I'm trying to clean up:
http://www.box.net/public/anbcpeqtnv
Source is VHS using S-VHS via ADVC-100. You'll note the faint pattern of horizontal bands and the rolling of those bands (or some parts of them) from the bottom of the screen to the top. Is there a VirtualDub filter that can lessen this effect? Some other type of filter? Would a TBC help?
Thanks for any and all suggestions.
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I couldn't really see what you are describing, but in general, a TBC should help. Make sure the interference is not on the VHS tape itself.
Usually any type of interference that drifts up or down the screen can be helped by a TBC. They're not cheap, but if you do a lot of VHS conversions, it will be worth the cost. Some VHS decks, such as some JVC models and others have some type of TBC built in.
Here's a Wikipedia page on TBCs: http://en.wikipedia.org/wiki/Time_Base_Corrector
And some TBCs from B&H. There are a few below $250US: http://www.bhphotovideo.com/bnh/controller/home?O=breadCrumb&A=search&Q=&ci=2138
I can't think of any VD filters that would specifically help that much with your described problem, but there are a lot of filters available and you could try a few: http://neuron2.net/
And take a look at lordsmurf's site for some good information on filtering and restoration: http://digitalfaq.com/
This thread would probably get more answers in our Restoration Forum. Moving you. -
Thanks for the quick reply. The effect I am seeing does appear to be on the tape, but I wanted to see if I was missing something that could be done to lessen it before burning to DVD.
I had already looked at the info on Lord Smurf's site as well as previous topics in the forum here and the filter site you mentioned, but didn't find anything that seemed to deal with the problem I'm trying to correct. I've considered picking up a Datavideo TBC-1000 and no doubt will sometime soon. Just wanted some opinions on whether it would improve the output from this tape before I settled for my current results.
If anyone's got any other thoughts I'd appreciate your input as well. -
You're talking about about the fast flickering that's going on in the scene? Try MSU's Deflicker for VirtualDub
http://compression.ru/video/deflicker/index_en.html
Check out Dimitry's List of Vdub filters as well.
http://www.thedeemon.com/VirtualDubFilters/
There's a really talented programmer named Stolyarevskiy Sergey who recently translated some of his Vdub flters into english. Very slow site, though.
http://acobw.narod.ru/
Wait for the page to load - his English pack is towards the bottom. -
Are the lines on the VHS tape? Or do appear when capturing?
If they appear when capturing you may have a ground loop problem. Fix that and recapture.
If they are on the tape they are light enough that a mild temporal filter will eliminate them. Try Temporal Smoother at 3 or so.
You might try the Flaxen VHS filter too.
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