6 Replies Latest reply: Dec 23, 2011 8:54 AM by BGabriele RSS

    Auto transcode slightly over size

    BGabriele Community Member

      I have a long (6 1/2 hrs) DV sequence in PrPro CS 5.5, captured from several VHS tapes. The captured video is SD 4:3 720 x

      480. My goal is to author the media to blu disk, to avoid multiple DVD's. As such, I've set a link to Encore, made a simple

      menu, and proceeded to output to a blu disk folder.

      My problem is that after a 3 Hr transcode, the resulting files are a bit too large (101 %) for a standard 25 GB BD-R (by about

      400 MB). I normally output my Encore projects to either "BD folder" or to "image" and burn with ImgBurn, to avoid $ coasters.

      I'm using the automatic setting for the transcode, which seems to be missing the "size" target.

       

      Is there somewhere in PrPro, or Media Encoder or Encore where I can make an adjustment so I can fit the project on the BD-R?

       

      Im running CS 5.5 on Win 7 64.

        • 1. Re: Auto transcode slightly over size
          Bill Hunt CommunityMVP

          You can certainly Encode to either HD MPEG or H.264 in PrPro, and use bit-budgeting to get your output size down to fit. Obviously, the lower the Bit-Rate, the lower the quality. There are several good articles on bit-budgeting, and also several calculators, on the Internet.

           

          This would probably be a good ARTICLE to start with.

           

          Good luck,

           

          Hunt

          • 2. Re: Auto transcode slightly over size
            ram8kumar Community Member

            Did encore not show the size estimate before burning?

            If it did show the estimate, was that estimate below 25 GB before transcoding?

             

            -Ramesh.

            • 3. Re: Auto transcode slightly over size
              BGabriele Community Member

              Hunt

               

              Thanks for the info leads. I found, in a section on "bit budget", that Encore's "automatic" setting will do a good job of estimating as long as the media is around 2 hrs or less.

               

              In order to get this done quickly, I went back to the Premiere project and exported the timeline to h.264 bluray, which resulted in a smaller output, with which I was able to construct a BD image (and burn).

               

              This was an odd project... the first time I've tried to construct a BD around such a high DURATION of media, as opposed to large amount of data. Since the bandwidth of the original content (VHS tapr) was low, I thought I could get away with using a low data rate.

               

              Thanks...Ben

              • 4. Re: Auto transcode slightly over size
                BGabriele Community Member

                Ramesh

                Yes, the estimate shown was below 25 G, but not by a lot.

                 

                FWIW, there is no way to tell Encore, in the build BD screen,  to shoot for a different size. There is such an option when building an Encore DVD, which I've used with success (I tell it to target 4.25 GB, for some margin.)

                 

                I remember reading something about win 7 (64 bit?) using a different number scheme for file size, and Encore being a 32 bit application mis-interpreting the values for estimation.

                 

                ...Ben

                • 5. Re: Auto transcode slightly over size
                  ram8kumar Community Member

                  You can change the size from 25 GB Single layer to 50 GB dual layer which would give the correct size if the size is going below 50GB.

                  If the media is non-BD legal then, En can fit a whole lot in a dual disc by lowering the bit rate(hence degrading the quality).

                  But if media is BD-legal then En does not play with the bit rate and it will just not do any auto fit of the content.

                  • 6. Re: Auto transcode slightly over size
                    BGabriele Community Member

                    Ramesh

                    Thanks for your insite on this. I plan to try your suggestion soon. I had to get this project into a "presentation" form ASAP, so I resorted to multi DVD's. Which leads to another question (not necessarily for THIS discussion)....Reading discussions about transcoding (in general), it might be best to do as much of the data prep in Premiere.

                     

                    Thanks again...Ben