Invalid duration specification for force_key_frames

[jakimfett]

Attempting to run the ffmpeg script on Ubuntu 12.04 LTS. I'm getting an error that says "Invalid duration specification for force_key_frames: expr:gte(t,n_forced*2)"

The only place in the script that I see that is lines 289-291, but I'm not knowledgeable enough in the ways of ffmpeg-fu to know how to fix it.

Log: http://pastebin.com/8J3UqYu9

[wargio]

Have you built ffmpeg as the readme says?

i have also reverted back on an older version since the last commit was untested and moved the new code under the develop branch. so download the script and tell me if this helps you