SSFIV: Blocking unblockable attacks

EDIT: I ve realized why this technique works. The down, back input registers as a crouch block which cancels the last wake up frame into a crouching position. This makes the jump in miss the wake up frame, and when you hold back you re able to block correctly. This vid demonstrates a technique that can be used to correctly time the input for blocking hardtoblockable attacks in SSFIV Music: Digital Deadline br, br,