Render the results of the merging of these two captures back to another file.Ħ. Once you have fixed the capture, put it on the Vegas timeline and proceed as described above. If it does, use this AVISynth script to fix either of the two captures:
You therefore have a 50/50 chance of this happening. This is due to the fact that the capture card just sees fields coming in and then combines them into frames.
You may find that your second capture is off by half a frame. If it has, split the video that isn't synced to the audio and re-sync the two video tracks (you should have to do this more than once or twice, even for a long capture).
Check along the entire timeline to make sure that the video hasn't gotten out of sync. Use only the audio from one of the two tracks. To do this alignment, set the opacity of the top video track to exactly 50%, and then move the event on one track left or right one frame at a time until you have perfect alignment. Line the two up so they are frame accurate. You then take this video and line it up on the Vegas timeline directly above (or below) your original capture. That's right, capture the video a second time. For truly amazing results, repeat step 4. I find this works far better than my ATI Radeon 8500 DV capture card.ĥ. I am less certain, however, of its importance if you immediately digitize the signal.Ĥ. My understanding of what a TBC does is that it regenerates the sync signal which is extremely important if you are going to record the signal on another analog tape. Some people recommend using a Time Base Corrector between the VCR and your capture device. This defeats the "edge sharpening" circuit which makes some people think the picture looks sharper, but actually loses detail. Make sure you turn on the Edit switch (sometimes called "tape dub"). If such a thing doesn't interest you, by all means skip this lengthy post!Ģ. This is a description of what I have learned about how to get the best possible quality video from VHS tapes.
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