09.03.2021, 22:23
I hope so 
I also asked on Vegas Creative software forum, there are guys that use HD camcorders footage, might know the answer, as well as sent an email to TMPGEnc support team.
I am surprised that there is no already found a solution, a sett of settings for x264.
Looks like only TMPGEnc (a Japaneses company) has SW tools to get this done right and supports other Japanese companies that manufacture HD camcorders. It might be something special in the header of Japanese camcorder file that TMGEnc recognizes and gives a green light to accept as compliant. And there is no way to create artificiality that AVCHD 2.0 compliant file with x264.
I also asked on Vegas Creative software forum, there are guys that use HD camcorders footage, might know the answer, as well as sent an email to TMPGEnc support team.
I am surprised that there is no already found a solution, a sett of settings for x264.
Looks like only TMPGEnc (a Japaneses company) has SW tools to get this done right and supports other Japanese companies that manufacture HD camcorders. It might be something special in the header of Japanese camcorder file that TMGEnc recognizes and gives a green light to accept as compliant. And there is no way to create artificiality that AVCHD 2.0 compliant file with x264.