3 Replies Latest reply on Dec 30, 2009 5:58 AM by Blinding01

    Why is my calculated file size incorrect depending on bitrate?

    Blinding01

      Hi,

       

      I have created a sequence in PPro CS4.  It is HD 1920 x 1080 - probably interlaced as it came from a Sony SR10 PAL camera.

       

      The sequence is 7 minutes long.

       

      When I encode it using Media Encoder CS4, I have set it to H264 and TS multiplex.  When I set the constant/ variable bitrate to 11 Mbps, the final file is around 1600MB, at 1920 x 1080i.

       

      In my opinion, a 11Mbps video file, which is 7 minutes should be around 580MB.  (7m x 60s x 11Mbps / 8bits)

       

      What is going on?