EXERCISE 1 (VIMEO) — PROVIDE THE NUMERIC ID FROM THE VIMEO URL
EXERCISE 2 (VIMEO) — MOST COMMON TYPE, E.G. 'BENCH PRESS'
EXERCISE 3 (YOUTUBE) — PROVIDE THE VIDEO ID FROM THE YOUTUBE URL
EXERCISE 4 (MP4) — SAVE .MP4 FILE TO MEDIA/EXERCISES/ FOLDER
EXERCISE 5 (IMAGE FALLBACK) — USE WHEN NO VIDEO AVAILABLE YET, JPG/PNG