Sometimes user may ask for some featrues in hurry, I add the extra arguments in convert options so they can put arguments by themself before the new feature come (or never :grinning: ).
This is actually pretty helpful, because FFmpegParameters.CustomArguments would not be appended to the other parameters.
I'll accept this PR as a temporary fix.
Sometimes user may ask for some featrues in hurry, I add the extra arguments in convert options so they can put arguments by themself before the new feature come (or never :grinning: ).