Sounds about right DwarfHog! You’re lucky there’s anything there at all – often they have just gone completely out of range! One of their many talents – how to avoid having your image captured on camera! Now and then they let the guard down and perform nicely for the camera and that makes up for all the almosts, hogs dashing across at speed and part hogs.
Seriously, though, that is why I always recommend that people watch them in real time as well. You see so much more and if you are interested in behaviour it is really the only way. But, you will probably find it won’t be long before you have more clips saved than you know what to do with! My collection of memory sticks full of hog videos is growing alarmingly!