Tentacle does support AVCIntra (LongGop,422,444…) if Apple Pro Formats are installed on your system.
I can totally understand this from a users perspective and we would love to include the codecs into the app. But since the codecs belong to Apple there is no way that a small company like Tentacle Sync can get a license from them.
I am really sorry but the answer above is the only solution to get the codecs. Hope you understand.