Comment: ok to clarify, I have the clip or frame I want to add

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In reply to comment: there's a free program called (see in situ)

ok to clarify, I have the clip or frame I want to add

I just need to know how to delete a frame from a video. then insert the new picture in that frame. (without messing up the audio version of the video)

seems simple. but have not had success doing this.

any ideas?