On 2022-11-13T22:18:15+0100, Michael Koch <astroelectro...@t-online.de> wrote:
> Is the "-" at the end an (undocumented) option of FFplay, or is it a batch 
> file operator?

The first, I guess.
I've found 'opusenc' (Opus command-line encoder) to print:

   Usage: opusenc [options] input_file output_file.opus

   [...]

   input_file can be:
     filename.wav      file
     -                 stdin

   output_file can be:
     filename.opus     compressed file
     -                 stdout

   [...]

But I also have lots of other binaries where the help-section doesn't mention 
the dash or stdin.
So I guess the developers assume it's common knowledge.

-- 
Reino

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