Apparently this is real. It sounds like someone doing their impression of Arnold but I guess it's not. You can weed through the comments on the youtube page itself if you want it verified.

Regardless...it's pretty damn funny.

It is the DVD commentary for the iconic flick Total Recall.  Arnold must think the viewer has some kind of visual/learning deficit as he describes literally everything that is going on during the scenes.

"She's trying to steal the suitcase".

Great insight, Mr. Schwarzenegger.  I appreciate it.