To join multiple 001 avi etc files 1. use cat filename.avi.* > filename.avi 2. But its not the safest. So, AVI files - avimerge -------------- **Description** > avimerge is a versatile tool. It can contatenate several > AVI files into one. It can also be used to fix an index of > a broken file and can also replace audio tracks or muxes > new ones. It can read raw AC3 and MP3 files for multplex- > ing. **Installation** `sudo apt-get install transcode transcode-utils` **Usage** You can merge avi files with: avimerge -i input1.avi input2.avi -o output.avi Its encoding-free, so joining the parts usually doesnt take much longer than a minute. **Options** Other available options are: Usage: avimerge [options] -o file...