mplayer -lavdopts vismv=1:debug=0x4000 ~/simpsons_movie_trailer.mp4
- Red Macroblocks: "I" encoded (You don't need a full "I Frame" to have Inter encoded data)
- Green Macroblocks: "P" encoded (Forward Prediction)
- Purple Macroblocks: "B" encoded (Bi-Directional Prediction)
Arrows represent the motion vectors used to move blocks around.
- http://libav.org/avconv.html "vismv"
- http://www.ffmpeg.org/ffmpeg-all.html "debug flags"
- http://www.mplayerhq.hu/DOCS/man/en/mplayer.1.html "−lavdopts"