Capture setup; use VirtualDub 64, filters?
I wrote to lordsmurf and he recommended I post here to receive responses.
I am trying to figure out a few things and I am looking for some help before starting up the project. Background
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64 bit VDub and v.10.x are no-no's. You can't mix 64-bit apps and 32-bit filters, nor can you run 32-bit Avisynth scripts and codecs in 64-bit VDub. 64-bit version of these programs are extremely limited and not expected to improve in the future. There is nothing wrong with the extensive 32-bit resources available for Windows. If anyone tells you 64-bt is "faster", make them prove it. Quote:
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Good luck. http://www.digitalfaq.com/forum/vide...-settings.html |
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Did you decide on the storage format on computer? Keeping lossless, MPEG, etc? Quote:
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Get the standard 1.9.x version of VirtualDub found in the forum. Use that for capture. It has many filters pre-loeaded, so you can also use it later for filtering/restoring if needed. Quote:
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Thanks. I reviewed the Virtualdub settings thread recommended and have a few questions.
- Using the histogram is mentioned. Any advice on how to fix issues with histogram if see signal outside of 16-235 even after cropping? It mentions using brightness and contrast but not sure in what order or how to best do this. (Lordsmurf - do you use this in the same way?) - The settings recommended also indicate not to sharpen VHS, but the setting shown is 128. Was that just default and it should be left there? - The volumes histogram shows volume levels. Should I use this to help set incoming volume level to the right level and do you have guidance for setting recording volume? I hesitate to base sound on my computer speakers given they are not great speakers. - What is Audio input vs Audio source? Also not sure how to choose between audio line vs audio tuner in the Audio Source options. - Lordsmurf, for resolution, you mention never use less than 720x480 or 720x576. Is one of these better or recommended over the other? Thanks for your help. |
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Which value would you try first? Take a deep breath and try brightness first, if it needs fixing. If black levels don't need fixing, I'd suggest you try contrast if the brights are too hot. You'll note that both controls tend to interact to a certain degree, so you might have to jockey back forth to keep things straight. If the darks don't need fixing and the brights don't need fixing either, there's not much for you to do except to turn off cropping and start the capture. The guide goes into detail about brightness and contrast controls, and the details are pretty basic. Brightness adjusts black levels, contrast adjusts highlight levels. If your bright highlight values are flowing off into the red on the right-hand side of the histogram, you would lower contrast. If your dark values are flowing into the red non-safe zone at the left side of the histogram, you would increase the brightness control. If you crop off unwanted borders and let the tape play briefly and find that the histogram changes but you are still within the 16-235 range, there's nothing to do. On the other hand if you see that the darks looks grayed-out and foggy, you likely have black levels set too high and could lower blacks until they just barely touch the left-hand red area or lie jut beside it. If the brights look too dim or flat, try adjusting contrast. Remember, though, that a night scene isn't going to have a lot of bright values unless you have something like a room lamp, street light, searchlight, or other bright object in the dark frame. Quote:
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With other devices like USB cards, the audio input and the audio source itself are usually the same, unless you have somehow managed to misread the card's instructions and are feeding your audio line into your sound card instead of into the USB device itself. Cards differ, but USB cards are usually the "source" and there's usually no choice for "input". Quote:
720x576 = PAL format, 25 fps. If you mix the wrong frame size for your input format, you have borked your capture and will have serious processing problems later. |
I downloaded VirtualDub 1.9.11 from the site and was ablw to get it working. However, I cannot seem to control volume levels in capture. I can change the speaker volume no problem, but it has impact in the volume meter. Also, clicking on Windows mixer does nothing.
I have uninstalled my VC500 drivers and reinstalled, same issue. Some additional detail: Under audio devices the only option that works is 0 Capture Device. The other options include 1 Analog Audio In (usb 2.0 video capture) and 2 Conexant Polaris Audio Capture. With the selection of 0 Capture Device I hear audio but not for the others. With this selection, under audio inputs I have no options and under Audio source I have No source or Audio Line. Any advice? This is driving me crazy as I have not been able to find any solutions by searching the internet. |
One correction. I reinstalled the 64 bit version of Virtualdub. When I click mixer there it pops up but changes do not impact the bars in the volume meter. Otherwise everything is the same.
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