On 2025-07-27 15:45, Mark Filipak wrote:
On 27/07/2025 16.51, Jim DeLaHunt wrote:
...I understand that FFmpeg routinely monitors stdin while running... Oh, yes, of course. But-- But-- But my understanding is that > redirects to stdout.
I'm not sending anything to stdin. ...So, (?).
You are not sending anything to FFmpeg's stdin in your commands. It certainly seems like FFmpeg is receiving something on its stdin. So, perhaps something else is sending something to FFmpeg's stdin? Another agent in this situation is the Windows command shell, perhaps it is sending? But understanding the root cause is one thing. Preventing the symptoms is another, but perhaps that is enough. Does adding -nostdin to your FFmpeg invocations prevent the problem?