4 Replies Latest reply on May 31, 2011 4:16 AM by pgauba

    Blu ray,Fit contents to disc?


      I created a blu ray burn.Project was settings were h264 1920*1080i.Project length was 00;40;45;13.

      Everything went great and the disc looks like the original off of my Pany tm700 which I recorded at 1080/60p My question is when I check the "fit contents to available space",It shows "space required : 7.23gb(bitrate 24.00Mbps).When unchecked it shows 6.09gb(bitrate20.19Mbps) I know my project was short enough but why does it show more space required when checked than unchecked?

        • 1. Re: Blu ray,Fit contents to disc?
          the_wine_snob Level 9

          Without knowing exactly what is under the "hood," my first guess would be that a different bit-rate was used, one choice vs the other. A simple bit-rate change could account for a significant size difference in the Transcoded material.


          Good luck,



          • 2. Re: Blu ray,Fit contents to disc?
            hurleyvcr Level 1

            Yes,the bit-trate would affect the file size but why more when the "fit contents to available space" is checked?

            Should I leave it checked or unchecked when my bluray project is small enough because it says the bit-rate is higher when checked (24Mbps checked as apposed to 19.19Mbps unchecked)?

            • 3. Re: Blu ray,Fit contents to disc?
              the_wine_snob Level 9

              Why that bit-rate would change, when one is no where near the max Duration for a BD is beyond me. I would go with the max bit-rate for the ultimate quality.


              Good luck, and maybe others can tell you the "whys" of this behavoir.



              • 4. Re: Blu ray,Fit contents to disc?
                pgauba Adobe Employee

                Default bitrate is 20.19Mbps for 1920x1080 settings in this preset. It calculate the size based on 20.19 bitrate and the maximum bit rate setting is 24mbps bitrate for this preset. If we check the "Fit content" option then PRE sets the bitrate to maximum(24mbps). if we add the contents(more than 25 GB) in timeline and check the "Fit content" option then it will reduce the bit rate to fit the content in 25 GB Disc.



                Pankaj Gauba