The old Mini-DV video cameras use the DV video format which only has I-Frames. If your video is MPEG2 then Cuttermaran is a capable and free tool for this task.Ī special case is video which only consists of I-Frames. For frame accurate cutting only the relevant GOPs will be completely reencoded. Then there is a technique called "Smart Rendering" which you can find in many NLE software. (StaxRip or any video encoding application which uses AviSynth can do this). This makes it easy to cut the video with frame accuracy. AviSynth decodes the whole movie frame by frame, then applies filtering and finally serves it frame by frame to the encoder. If you need to reencode the whole video anyways then AviSynth is the way to go. This means that encoded video can only be cut at I-Frame borders if you do not want to reencode at least partly. To decode them you will need to decode the whole GOP. Only I-frames can be decoded all for themselves, all other frames have references to neighboring frames. I should, however, eventually research what the difference between all those Video Output modes are rather than choosing a random one each time.I guess you know the concept of "intra" frames and "non-intra" frames in video encoding. I have not tested all the other modes, but I am almost completely sure that the re-encoding is what helps… so the particular mode should not matter. Save the resulting file -and- check that the output video is correct. To change the Video Output, I have to click the dropdown under “Video Output” on the left. So… I might want to only re-encode the front part and cut it off where I mean, import in the middle section? I have not tried that yet. However, re-encoding may decrease the quality of the video. I did not realize this the very first time, and I was very confused as I repeatedly saved and checked and found the result always identical.
If I try to trim the video and do not change the video output mode, it keeps going to the closest preceding I-frame. (I think I-frame is short for intra frame?). It will re-encode the file so that it does not get stuck on keyframes or I-frame or whatever you want to call it on export. When Avidemux 2.6 refuses to let me crop, trim, or generally cut off precisely where you want my video’s frames end, I should change the video output mode to something that is not “copy”.
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