I just wrote the initial (and maybe useful) version of my very first dashboard widget. You can find it on the software page and download and use it for free.

features:

  • calculate filesize from a given movie length and bitrate and optional audio bitrate
  • calculate bitrate from a given movie length and filesize and optional audio bitrate
  • calculate length in seconds from given filesize, audio bitrate and video bitrate
  • calculate filesize of a movie with given length and choosable format (DV, DV50/DVCpro50, Uncompressed PAL 8-bit and 10-bit) and vice versa

screenshot:

Screenshot front 0.1

download:

Video Calculator Widget 0.1 (252 KB)