# Matches Progress Lines in FFMpeg output
^frame=                              # frame=
\s{0,}(?<FrameNumber>\d+)\s{0,}      # Followed by the Frame Number
fps=                                 # fps=
\s{0,}(?<FramesPerSecond>[\d\.]+)\s+ # Followed by Frames Per Second
q=                                   # q=
(?<QuanitizerScale>[\d\.]+)\s+       # Followed by the Quanitizer Scale
L?size=                              # size=
\s+(?<Size>\d{1,}\wB)\s+             # Followed by the Size
time=                                # time=
(?<Time>[\d\:\.]+)\s{0,}             # Followed by the Time
bitrate=                             # bitrate=
\s{0,}(?<Bitrate>[\d\.exN/A]+)kbits/s(?>
  \s{0,}                             # Followed by optional duplicated frame count
dup=                                 # dup=
\s{0,}(?<Duplicated>\d+)){0,}(?>
  \s{0,}                             # Followed by optional dropped frame count
drop=                                # drop=
\s{0,}(?<Dropped>\d+)){0,}\s{0,}     # Followed by the Bitrate
speed=                               # speed=
\s{0,}(?<Speed>[\d\.N/A+]+)x\s{0,}   # Followed by the Speed