Controlling what get outputted to stdout when running external commands

[Daring_T]

I wonder if some of this is because the console is getting both stdin and stderr.

If you run handbrake [options....] > /dev/null do you get the output you're trying to ignore? If so, (and if you don't need the stderr information), then try adding stderr=subprocess.DEVNULL to have that stream ignored.

If you do need to parse the stderr stream, then setting it to stderr=subprocess.STDOUT should work to combine them.

I put the stderr stream inline with the stdout stream like shown above and that woked.

p = subprocess.Popen(command, stdout=subprocess.PIPE, text=True, stderr=subprocess.STDOUT)

Is there any reason as to why its is hard to capture two or three streams? If you have any good resorces on the topic I would a greatly aprecate it if you could send them my way.