Hi Mark, you are pretty close:
> What I've concluded from what I've read (and seen on this list): > > 'ffmpeg [gen_opts] [in_opts] -i <infile> [out_opts] <outfile>' Yes, and it's documented like that at the start of the documentation: http://ffmpeg.org/ffmpeg.html#Synopsis ffmpeg [global_options] {[input_file_options] -i input_url} ... {[output_file_options] output_url} ... Then the detailed description ramps up quite steeply … > And I've read about filter graphs of course, but it's awfully cryptic > and there's no use examples. I know that filter invocation involves > operators such as '[x:y]' but I've not figured out what they symbolize > and how to use them in a command line -- I've tried dozens and dozens of > hacks. http://ffmpeg.org/ffmpeg.html#Advanced-options 5.11 *Advanced options* Input link labels must refer to input streams using the [file_index:stream_specifier] syntax (i.e. the same as -map uses). If stream_specifier matches multiple streams, the first one will be used. An unlabeled input will be connected to the first unused input stream of the matching type. HTH, Daniel _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
