This is an old thread BUT I am having the same issues with the F75. recently, the captioning has not been working. I am using the HD-SDI input so the settings for CC1 and CC2 in the VIDEO menu should not be applicable. I then turned to the VANC settings in the METADATA/HD VANC INPUT sub-menus. my settings are: “LINE 9” DID:0x61 SDID:0x1. I checked the input CC and all is good–just not recording or passing through? OLD post i know—could someone throw me a bone?..it’s Friday night for Pete’s sake.