If you want true Bias Binding videos, go to youtube and search for Continuous Bias Binding. This is where you cut a square of fabric, cut in half, sew the 2 peices together, then mark the width of binding you want. Sew it into a sort of tube then cut with a scissors on the drawn lines.
I just did this last week. Made my own binding for making "Little dresses for Africa. A 12" square yielded about 60 inches of bias binding--unfinished width. Then you fold it as for binding a quilt or single fold or double fold bias binding. Of course, the larger the square--the more footage of binding you will get.