In editing, cutting or trimming is the most basic means of optimizing a video. PiTiVi is a Non-Linear video editor first and foremost, and so it doesn't have a 'copy' mode, which would prevent any track-mixing and any video effects.Q:'Can Avidemux cut video file without re-encoding? I need a detailed guide. So you still get some video re-encoding, though minimal. Smart copy will ask you for a value for the quantizer to use – 4 or 5 is generally OK. So in our example, frames ab and nop would remain unchanged, while frames jkl would be re-encoded to use a different reference frame. Smart copy will leave most frames unchanged, but re-encode the part that lost its reference images with a fixed quantizer. If your file uses MSMPEG-4 (DivX -) 3) or MPEG-4 video, you can use smart copy mode. However, with some specific codecs, Avidemux can do 'Smartcopy' as explained here on the website Usually too few to notice, but they are there anyway. Effectively, 'Copy' mode can only split on keyframes, and that means that unless you chose a keyframe to split on, your resulting video will have a few more frames than what you intended. You might have noticed that this cutting doesn't actually work always with exact precision. That's why you can't use video filters in this mode. The 'Copy' mode works by copying the raw compressed video from the original file (container) into the new file (container). It also means that no video filters can be applied. Cutting/splitting videos without re-encoding can only be done in 'Copy' mode. You have probably noticed that Avidemux has several 'modes' of work. PiTiVi is a Non-Linear video editor first and foremost, and so it doesn't have a 'copy' mode.

Cut video without re encoding avidemux