I've been using some software called MotionPro for a couple of years to do simple video analysis. It's not in the same league as Dartfish or other products like that, but it costs less than $100 and allows you to view video of you skiing frame by frame or in slo-mo. The other great feature is split-screen mode where you can synchronise two videos and compare them side by side, frame by frame or at speed of your choice. Great if you have some video of pros to compare yourself to.

It's a good, affordable way to start analysing your skiing videos.

Here's the website:  www.motionprosoftware.com

Just for the record, I have no affiliation to this company other than as a fan of the software.