This app is a free tool for playing and converting videos in slow motion and fast motion. It has the following features: ● Slow motion play/convert: 1/8 (0.125x), 1/4 (0.25x), 1/2 (0.5x) ● Fast motion play/convert: 1.5x, 2x ● Partial slow motion/speed-up ● Repeat ● Mirror flip ● Add narration The narration feature is useful for sports video lessons.