Update ffmpeg version?

[fadone]

Hi! I need to update ffmpeg version because I am getting the following error:

[fferr] [Parsed_anullsrc_0 @ 0x1bf85c0] Option 'duration' not found
[fferr] [AVFilterGraph @ 0x1c2fa80] Error initializing filter 'anullsrc' with args 'duration=0.219'
[fferr] Error initializing complex filters.
[fferr] Option not found