how i know the right key ?

[ahmedani]

i get

[
'e76626fae59f57b998ed5567b7b51ebe:4ec0ee7f1e8822ce 3511915947d0f717',
'3bf7ca4adf1c5f36a3d564c110a5c998:6b4a9e931543aeda 630a39d8ebfb6d3e',
'fa571d0623ca5005a97b204904b3b6d0:d9a3a98d41dab4d7 3d642bbace105194',
'c92fdaf48c975be9a84ebe5ffe4ede7c:4dafbab8b70e9e6a 028a7bc34b6f6436',
'0868b330d01054f3a7b66a9bdf187d16:a0d9c9a0759679d0 2ca7cb504342bed9'
]

[cedric8528]

mp4decrypt --key xxx:xxx --key xxx:xxx --key xxx:xxx --key xxx:xxx  --key xxx:xxx yourfile.mp4 decryptfile.mp4

[ahmedani]

thanks