I have a video with a short scene that somehow got flipped horizontally. I need to flip the short clip (within the larger video) horizontally--not so that the short clip will play backwards, but so that every frame is flipped horizontally. Not rotated 180 (as that would make it up side down). The clip is flipped like a mirror. Hope that makes sense.
First, cut the longer clip into 3, to separate the reversed part from the rest of the clip. Then bring the clip into fusion, link the input to a transform node, then to the output. The transform node can flip horizontally on the right hand side panel options for it.
A shortcut to do this quicker is you can do it in the edit page also, by just selecting the clip and using the 'transform' attributes on the right hand side.