How to (actually) mask a pony in Sony Vegas, or Twizzle drinks too much and makes a useful tutorial

Quick bang out vid that I may write a proper description for and do annotations for later. It does take me longer during the description to mask this, but all subsequent frames are fast as fuck. You may notice I don t feather in this at all, nor did I go back to touch up. Normally I would do touchups, but I ignore feathering as I get the actual mask clean enough to not need it. This ll finish uploading while I sleep, so perhaps tomorrow night I ll do those annotations, description I mentioned.