Many of video capture applications support GStar when used with analogue Video capture card. I capture images only in FITS format and I use Maxim DL (mostly for processing) but mainly AstroVideo. It is only video capture program I know that will capture video frames of with exposure time you can specify, subtract dark frame, align the image with previous one and stack it on fly. So if you want to take 150 exposures with other capture programs you would end up with 150 images or video clip with 150 frames. Then you would have to subtract darks, align images and stack them. With AstroVideo you can specify to take 3 subs of 50 images and you finish with 3 images that are align and have darks subtracted.
I have not used Video capture program that comes with GStar so I cannot comment on it.
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