By calling "cutmts" you will get this: cutmts version 1.0 Usage: cutmts -i file.mts [-o outputprefix] [-q] cutmts -i file.mts -o movie writes the output to movie0001.mts, movie0002.mts,... cutmts -i file.mts -O movie.mts writes the output to movie.mts cutmts -I file.mts prints file information So this means you have to type cutmts -i file.mts to edit the file named "file.mts" interactively. At every position the video is being played for roughly 1 second. 'r' plays it again. With the keys 12345 you can rewind, with the keys 67890 you can go forward. '0' means 10mins forward, '9' is 1min forward, '8' is 10secs forward, '7' is 1sec forward and '6' is 1/10sec forward. Keys '1' to '5' go symmetrically back (so '1' means 10mins back). When you are at the starting position of your part of interest, press the key 'a'. When you are at the last position of your part of interest, press the key 'b'. By typing 's' the resulting file will be written to video0001.mts. If it already exists, cutmts will increase the number to video0002.mts, video0003.mts and so on. -q switches on quiet mode, cutmts won't play any video, useful for debugging and piped commands like: "echo 7a9bsq | cutmts -i file.mts" By typing: cutmts -i file.mts -o blah the resulting files will be written to blah0001.mts, blah0002.mts, blah0003.mts and so on. If you only want to cut a file once and you know the times for start and the end, you type: cutmts -i file.mts -a 0:37 -b 1:25 and cutmts will write the passage in file.mts starting at 0:37 and ending at 1:25 to blah01.mts If you want to cut a file more often, you need to create a file which contains a timetable and type: cutmts -i file.mts -f name_of_the_timetablefile Please read README.timetable for details. cutmts only accepts one inputfile, so using wildcards like '?' or '*' in filenames will result in editing only the first file that matches.