So sorry if you have problems with the video, but if you google youtube - using bias tape makers, you should find plenty.
The method I would use for making my own. Press several strips using the tape maker, place 2 strips wrong sides together, and sew lengthwise down the middle with a long stitch, (maybe loosen tension a tad - to pull out later). Make sure the edges are matching as you will also be sewing thru the back strip. I wouldn't make smaller than 1/2" tape, and that's daring. If you choose a wider 2" sashing, this method also allows you to pull strips of batting through after taking out those long stitches.
Seams easy - in theory.