====== frameinfo ======

  * [[https://ffmpeg.org/ffmpeg-filters.html#showinfo]]
  * [[framecount]]

Display frame information:

<code>
ffmpeg -fflags +genpts -i dvd_copy.mpg -an -sn -vf showinfo -f null - 2>&1 | egrep 'i:(P|T|B)'
</code>