showriff version (return code: 0)
Contents of file version (0/0x0 bytes):
showriff -HELP (return code: 1)
showriff: invalid option -- '-'
showriff shows contents of RIFF files (AVI,WAVE...).
(c) 1994 UP-Vision Computergrafik for c't
unix port and some extensions (for avi) by Gerd Knorr
usage: showriff [ -j ] [ -e ] filename
options:
-j try to decode some mjpeg headers
-e don't stop on errors