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Show help if no cmd line options are provided at all.

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This safes the users time to find out which of -h --help -? works.

Originally committed as revision 20822 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2009-12-13 13:49:14 +00:00
parent 0dae3e13e3
commit e4637d6a60
2 changed files with 4 additions and 0 deletions
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3
ffmpeg.c
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@ -3985,6 +3985,9 @@ int main(int argc, char **argv)
/* parse options */
parse_options(argc, argv, options, opt_output_file);
if(nb_output_files <= 0 && nb_input_files == 0)
show_help();
/* file converter / grab */
if (nb_output_files <= 0) {
fprintf(stderr, "At least one output file must be specified\n");

1
ffplay.c
View File

@ -2539,6 +2539,7 @@ int main(int argc, char **argv)
parse_options(argc, argv, options, opt_input_file);
if (!input_filename) {
show_help();
fprintf(stderr, "An input file must be specified\n");
exit(1);
}