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[ffmpeg] Clarify rationale for pipe(-) exclusion in _ffmpeg_filename_argument

This commit is contained in:
remitamine 2016-04-16 21:49:13 +01:00
parent d868f43c58
commit b9f2fdd37f

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@ -175,6 +175,7 @@ class FFmpegPostProcessor(PostProcessor):
# Always use 'file:' because the filename may contain ':' (ffmpeg
# interprets that as a protocol) or can start with '-' (-- is broken in
# ffmpeg, see https://ffmpeg.org/trac/ffmpeg/ticket/2127 for details)
# Also leave '-' intact in order not to break streaming to stdout.
return 'file:' + fn if fn != '-' else fn