Here is a tech showcase about instant double jump.

This is a great tech which I think everyone should invest some time into.
It is a great replacement for buffered fh aerials from previous smash titles.

Please enjoy! =)

Timestamps and table of contents:

00:00 Intro
02:47 Inputs
05:18 Regulating initial momentum
05:45 IDJ with tap jump
07:25 Buffering IDJ out of animation

------The typical traits of IDJ aerials---------

09:04 Trait nr.1: Rising aerial at ground level with full hop multiplier
10:43 Trait nr.2: Aerials covering larger area
12:30 Trait nr.3: Frameperfect follow-up
13:40 Trait nr.4: Addition option before landing
14:36 Trait nr.5: Autocancel options
15:38 Trait nr.6: Extra late aerials
16:42 Trait nr.7: Instant momentum shift/cancel

--------------Character showcase------------------

18:10 Byleth
19:09 Yoshi
19:51 Jigglypuff
21:40 Mario
22:40 Chrom
23:10 Terry
23:42 Cpt. Falcon
25:09 Ivysaur
25:30 Samus
25:39 Pit/Dark Pit
26:10 Pichu

------------Miscellaneous use of IDJ--------------

26:31 IDJ with items
27:20 Buffered perfect spacing
27:42 Canceling Luma
28:06 Mii Swordfighter dair pratfall
28:39 Jokers bair to gun dash
28:47 Marths consistent tippers
29:06 Piranha Plants instant dair landing
29:50 Outro

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Link to Jugeeya's twitter:   / jugeeya  

My twitter:   / snasensmash  

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Music:

OST from Rivals of Aether by flashygoodness:
Fight and Flight
Main Menu
Lightning Pandemonium
Howl of the Forest
Elusive Master of Toxin
Fire's Last Hope
Sylvan Radiance
Ori and the Blind Forest Medley (Original work by Gareth Coker)
Glacial Bastion

Links to music from RoA:
https://flashygoodness.bandcamp.com/a...
https://flashygoodness.bandcamp.com/a...

OST from Octopath Traveler by Yasunori Nishiki:
A Settlement in the Red Bluffs
Oasis in the Sparkling Sands
A Sea Breeze Blows
Battle 1
Victors Hollow, Jewel of the Forest
How Amusing!

Link to music from Octopath Traveler: https://open.spotify.com/album/7CY5mN...

OST from Mario Kart 8:
Big Blue, Original music by ‎Naoto Ishida, arranged by Shiho Fujii, Atsuko Asahi, Ryo Nagamatsu and Yasuaki Iwata
Link:    • The Music of Mario Kart 8 - Big Blue ...