I use Cyberlink’s PowerDVD for video-captures because it has a Step-Forward/Back button that I can move, practically frame-by-frame, to ensure I capture just the right moment. Then, I just tap “C” to capture, frame by frame, if I want.
To be honest, I never would pay for the retail version of any Cyberlink product because I don’t like them, as a vendor. But sometimes I find Burners including an OEM version of PowerDVD (v7+ is friendly to Win7&8), and there are software websites that claim to sell OEM disks in the $10 range. It’s worth that price to me because I’ve never see this Step-Forward/Back feature offered by other players.
If I can’t get PowerDVD, then I resort to VLC and accept that Pause Stops will be good enough.
(EDIT: Cyberlink has removed good features from PowerDVD - versions 5 and before offered manual Quality Settings for captures, but 7 and above have only Good/Better/Best settings, none of which are as crisp as the manual offerings. Dumbing Down strikes again.)