Using ffmpeg-python to call global (pre -i input)

[FuugoClay]

Hi there,

How do I call [pre input] global ffmpeg commands (with ffmpeg-python)? Because these occur after calling ffmpeg but before the -i (input), I am not sure how to do this.

tldr: I am attempting to build a fairly complex set of ffmpeg actions (which is how I found your ffmpeg wrapper) including amd/nvidia hardware encoding, HLS packaging/transcoding, muxing subtitles, etc. I am willing to sort out custom filters to be added to your growing list, as I run into them.. when I am comfortable manipulating this python method of processing ffmpeg :-)