Perhaps you should only reply when that reply actually has something to do with the question at hand? Nobody cares about "the general case", because it has nothing to do with OP's question specifically about ffpmpeg. Honestly I get the impression that you like to hear yourself talk more than provide any helpful insight.

In reply to Re^4: Passing an in memory scalar to an external command as an argument by wee
in thread Passing an in memory scalar to an external command as an argument by Rodster001

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