M4V and x265

Is there a profile setting for M4V files, as I'm not sure how to ad those to my profile,... I did ad it as a match container but its not an available option and my profile has an error and wont load.
Honestly looking for a profile for x265 as well, not sure if there is one... is there or is that not available in the program yet
ideas anyone
any input or information on where to look would be helpful
cheers all
Honestly looking for a profile for x265 as well, not sure if there is one... is there or is that not available in the program yet
ideas anyone
any input or information on where to look would be helpful
cheers all