I can't get the video to run Coff but most likely as AA62 says CDS. our UK CDS is (was in 2011) similar to US but initiated by pulling a pin from a 3 ring release with the retrieval winch. the US pulled a cutter blade incorporated into a kind of shackle trough the strap. Two rows of 48" wide baseboards hooked under a centreline vertical restraint beam.
To be pedantic the Dual Row Airdrop System (DRAS) was something used on C17 for 88" wide type Vs.
Thanks for the link @ICM I understood the parachutes were improvised from sheets. still 13 tons from a BE2 in 5 x 50 lb packages is quite a lot. Can we still do 24 one ton CDS in one go from a J?