Handy Seamless Transitions | Pack & Script - Project for After Effects (Videohive)

Features
Over 300 dynamic transitions
Requires After Effects CS5 and above
Without mediahodlers (adjustment layers system)
For any resolutions. Including: HD | Full HD | 2K | 4K
Compatible with Time Remapping
HST Script v.1.0 by Kogoduos is included (running in CC.2014 and above)
Detailed video tutorial included. Also, you can see the review here
AEP-file of Promo is included
Sound FX is included (based on pack of Mexikus)
Music used in the preview (not included): Epic by Mexikus
Font used in the preview (free): Muller