avimerge(1) on Linux
The text b26239e995a1, as Debian 8 (Jessie), Debian 7 (Wheezy) shipped it. The page shows this text now.
merge several AVI-files into one
Flags it lists
-
-A -
-a -
-b -
-c -
-f -
-i -
-o -
-p -
-x