http://download.blender.org/peach/bigbuckbunny_movies/

> ffmpeg -i big_buck_bunny_1080p_h264.mov -ss 02:05 -t 20 -pass 2 -passlogfile ./bunny-stat -strict -2 bunny2.mov

[libx264 @ 0x557cf18e6a00] constant rate-factor is incompatible with 2pass.
Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height