6 Replies Latest reply: Nov 11, 2014 9:01 PM by A.T. Romano RSS

    The concept of puting a 16gb MP4 file on a 4.7gb DVD

    The Hangerbum Community Member
    The Hangerbum Nov 11, 2014 4:40 AM

      Hello, When I use PE12 to publish my 16gb MP4 video cam footage to a 4.7gb DVD am I losing a great deal of the original video quality? It almost seems I must be.

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        • 1. Re: The concept of puting a 16gb MP4 file on a 4.7gb DVD
          Steve Grisetti CommunityMVP
          Steve Grisetti Nov 11, 2014 5:17 AM (in response to The Hangerbum)

          Most likely you are. If by "quality" you mean "resolution."

           

          What is the resolution of your original MP4? A DVD has only 720x480 resolution, about one-fourth the resolution of a high-def video.

          • 2. Re: The concept of puting a 16gb MP4 file on a 4.7gb DVD
            The Hangerbum Community Member
            The Hangerbum Nov 11, 2014 5:49 AM (in response to Steve Grisetti)

            Thank you..... my MP4 resolution is 1920 X 1080. What I see on my DVD playback is very good quality as far as I'm concerned but if the DVD quality is maxed out at 720X480 should I be wasting the time with the larger video files? It does take PE12 a long time to publish them

            • 3. Re: The concept of puting a 16gb MP4 file on a 4.7gb DVD
              John T Smith CommunityMVP
              John T Smith Nov 11, 2014 8:05 AM (in response to The Hangerbum)

              Creating a DVD does 2 things to your file

               

              1-reduces the size of the screen from HiDef to Standard Definition to meet the DVD specification

               

              2-compresses the file by GREATLY reducing the amount of data

              • 4. Re: The concept of puting a 16gb MP4 file on a 4.7gb DVD
                A.T. Romano Community Member
                A.T. Romano Nov 11, 2014 5:56 PM (in response to The Hangerbum)

                The Hangerbum

                 

                I just saw your thread and its discussion at this late date.

                 

                You talk about a 16 GB file being taken to DVD-VIDEO format on a DVD disc spec'd for 4.7 GB/120 minutes. In reality, that 4.7 GB is 4.38 GB.

                 

                Just before you hit the burn button in the burn dialog, what do you see listed in the Quality area for Space Required and Bitrate with a check mark next to "Fit Content to Available Space"?

                 

                There is the obvious difference in source (1920 x 1080) versus the end product (720 x 480) resolution

                dictated by the standard for DVD-VIDEO. But, if the program is struggling to make the fit of content to disc, the program may be automatically lowering

                the bitrate significantly to make the fit. Lower the bitrate, lower the file size, lower the quality. Anything less than an 8.00 Mbps bitrate in the burn dialog before burn needs to be evaluated. The actual burn process uses a variable bitrate so the actual bitrate is varying less than 8.00 Mbps anyway during the burn.

                 

                Please consider.

                 

                Thank you.

                 

                ATR

                • 5. Re: The concept of puting a 16gb MP4 file on a 4.7gb DVD
                  The Hangerbum Community Member
                  The Hangerbum Nov 11, 2014 6:39 PM (in response to A.T. Romano)

                  Thanks....actually I am frequently able to uncheck "Fit to Available Space" as I suppose PE12 has dissected my 16 gb to something less than the 4 point something that will fit on the DVD, So I guess the only way to preserve the original high quality is to copy to a drive?...e.a  .....one tb drives I use for back up. anything that is DVD compatible that is High def?>

                  • 6. Re: The concept of puting a 16gb MP4 file on a 4.7gb DVD
                    A.T. Romano Community Member
                    A.T. Romano Nov 11, 2014 9:01 PM (in response to The Hangerbum)

                    The Hangerbum

                     

                    Thanks for the reply. The only time one should work without a check mark next to "Fit Content to Available Space" is when one get "data rate error". Then you are forced to remove the check mark, so that you can manually lower the bitrate to allow yourself to continue.

                     

                    But, I am still curious as to how your 16 GB source was represented in the burn dialog for Space Required and Bitrate when you were using the DVD 4.7 GB/120 min. Have you ever considered doing the burn to using a DVD double layer single sided disc (spec'd at 8.5 GB/240 min - in reality this 8.5 GB = 7.95 GB)?

                     

                    ATR