I have two
How do I merge these two files using a command-line or GUI?
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There's a dedicated tool to do this,
avimerge -o cd.avi -i cd1.avi cd2.avi
If not installed, install transcode: Avimerge is part of transcode package: https://manpages.debian.org/jessie/transcode/avimerge.1.en.html http://manpages.ubuntu.com/manpages/bionic/man1/avimerge.1.html
Avidemux can paste two videos together, at least if they have the same resolution and a few other constraints. Use “Append” from the “File” menu.
You can merge avi files with
avimerge from Transcode package:
avimerge -i file1.avi file2.avi -o output.avi
I know that it isn't GUI tool, but to have GUI you could use that script:
#!/bin/bash file1=`kdialog --getopenfilename ~/ \*.avi` file2=`kdialog --getopenfilename ~/ \*.avi` output=`kdialog --getsavefilename ~/ \*.avi` avimerge -i $file1 $file2 -o $output
kdialog so it's for KDE users, GNOME users should modify it to use Zenity...
What about using ffmpeg concat like that:
ffmpeg -f concat -i \ <(for f in $PWD/*.avi;do echo "file '$f'";done) \ -c copy output.avi
If you get an error Unsafe file name add
-safe 0 between
If you're not wedded to the AVI container format as output, you can get easy lossless joining of AVI files from MKVtoolnix GUI. https://forums.plex.tv/t/howto-joining-multi-part-movies-files-with-mkvtoolnix-gui/113211 (The instructions in this link boil down to: add the first AVI file, right click > append > choose second file, then click "start muxing").
This also works for subtitles, mp4 files, etc. It also has the advantage of an output file that is more reliable to play and stream on modern players.