Once you've loaded in a video, you can begin the editing process. Any videos not directly supported by LosslessCut can easily be converted for editing by clicking on Convert to supported format in the File menu (This is just for preview and editing purposes only the final video will still be exported in the original format without any quality loss). LosslessCut can import from a variety of video formats, such as MP4, MOV, MKV, and more. Loading in a video is as simple as dragging and dropping it into the program. LosslessCut has a very polished and well designed user interface. This also means that LosslessCut can export videos much faster than a traditional video editor can.

As the name implies, LosslessCut manages to retain the original quality of the video you are editing by directly cutting and copying over the data stream, rather than actually re-encoding the whole video. 10-52-08 1920x1080_29.97fps_avc1-00.00.19.886.LosslessCut is a simple, yet powerful video trimming and splitting tool designed to be very fast and easy to use. I've other examples where I have video type or model in name and, then the above can't be used. In this case, when the file name consists of just date and time, I know the length of the original mp4 file. When copying tags from the original mp4 file, you used 'tagsfromfile '%%d%%19f.%%e' -all:all' in your example. Using your above examples and they are working perfectly.

Is losslesscut actually lossless