More information on how to cut or extract videos on Avidemux can be read here - Simple cutting on Avidemux. You can now either delete this portion or click save to just extract and save this portion of the video. it's best to cut at a key frame for the start point otherwise. This will select the portion of video between the 2 keyframes. Avidemux has a simple editing feature, based on selection points, that can help you. To select a portion of video between keyframes, use the UP and DOWN arrow keys on your keyboard to find the first keyframe of the video portion, and click the [B button on Avidemux. you want to use filters (it is impossible to filter audio or video without. To ensure that you don't have to re-encode a video when you delete some some portions of it, just make sure that you select and delete the portion of video between two I-frames.Īvidemux makes finding keyframes or I-Frames very easy - just open the video in it, and use the UP or DOWN arrow keys to move between keyframes. you have to do precise cutting thats not possible to do on keyframes 4. If VidCutter does not work in your case then I think your approach indeed is your best bet. I would then use Avidemux to count the superfluous frames in the beginning and end of the video, and move the cut points by nFrames 40 ms inwards. H.264 and H.265 encoded videos have certain complete frames ( keyframes) that are called I-frames or Intra Frames. All attempted have just resulted in it rejecting the second half of the video to join (mp4box) or spitting out a video that after that first half second or so is just corrupted and does not play the rest (avidemux). I tried a two-pass process, in which I would encode the video once with starting the encode slightly earlier than the cut I want, and finishing it slightly after the end I want. It's also free, open source and available for Windows, macOS and Linux.
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