I would like to use -c copy since I know where the I frames are but the closest I can come is specifying some time setting that makes no sense and then I obtain a video that does NOT start at the right time, or has audio alone at the beginning, or has no video, and more failures but never what I want. I have been trying every combination I can google and search this forum of -ss, -t, -to, input times specification, output time specification and combination of -ss input -t -to output. Using ffprobe, I have a list of all the frame types, scene change, and I frames (pts/dts times and frame numbers) All the parts start with a scene change with an I frame. Most of the time I wish to remove part b. What I am attempting it to do is cut and join videos such as a video with parts a- b- c.
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