Target bitrate

[rjc7394]

I'm not getting the bitrate that I want when I use "target size" or "target bitrate". I'm getting about 25% less bitrate than I want. If I want a bitrate of 1600 I get 1300. Never had this happen before. I always hit my target size but not bitrate. I use GKNOT to calculate my bitrate/size and it has never let me down before. I reinstalled Xvid but no difference.

[communist]

http://forum.doom9.org/showthread.php?s=&threadid=92046
Also do a search for 'undersize'. Basicly the movie you're encoding compresses better than what you encode usually.