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if the vidcaps don't work, you might consider just using the videos...
The whole vidcap thing starts back at the quality of the original camera work, lighting, and such. Video has very little latitude (difference between light and dark) which turns them into very flat images. The sharpness of the focus, the amount of movement, and other issues also contribute to these problems. Remember also that video cannot display as many colors as a still camera, and as such, there is a lack of spectrum.
Proper de-interlacing (there are techniques) and a some adjustments to the colors, brightness and contrast can help. Many videos are just not savable, often because the camera is hand held and never stops moving, which makes it VERY hard to get stable images without motion artifacts.
Poor quality in means poor quality out. Lower quality cameras (especially 1 ccd DBV cameras) are not going to generate high enough quality images to work from. Unless the video was shot with the intention of extracting stills, it is very unlikely that you will get good stills.
Alex
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