I uploaded a short (50 sec.) video on vimeo where you can see how to rotate 180 degrees a clip in Premiere Pro. It is intended for users of a 35 mm depth of field adapters on consumer/prosumer camcorders (I used it for my footage with Canon HV30), such as Twoneil, Redrock M2, Letus35, DIY and so on, but you can adapt instructions for a 90 degrees clip rotation 😉
Even if it has italian language instructions, I added english callouts for everyone to understand !-)
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