[utils] Clarify for redirecting STDIN in get_exe_version()

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Yen Chi Hsuan 2016-10-22 13:04:05 +08:00
parent 00ca755231
commit b64d04c119
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@ -1818,6 +1818,9 @@ def get_exe_version(exe, args=['--version'],
""" Returns the version of the specified executable, """ Returns the version of the specified executable,
or False if the executable is not present """ or False if the executable is not present """
try: try:
# STDIN should be redirected too. On UNIX-like systems, ffmpeg triggers
# SIGTTOU if youtube-dl is run in the background.
# See https://github.com/rg3/youtube-dl/issues/955#issuecomment-209789656
out, _ = subprocess.Popen( out, _ = subprocess.Popen(
[encodeArgument(exe)] + args, [encodeArgument(exe)] + args,
stdin=subprocess.PIPE, stdin=subprocess.PIPE,