6 Replies Latest reply on Dec 17, 2010 8:23 AM by the_wine_snob

    Does PE9 always re-encode files?

    Jota_Tres

      Hi,

       

      Maybe this is too basic but: If a I just want to trim and merge files, is there a way on PE9 to export without re-encoding?

       

      Thanks (as always sorry for my english)

       

       

      Regards

      Jorge,

        • 1. Re: Does PE9 always re-encode files?
          nealeh Level 5

          Yes it does always re-encode files and so, no, there is not a way to export without re-encoding.

           

          Cheers,
          --
          Neale
          Insanity is hereditary, you get it from your children

          1 person found this helpful
          • 2. Re: Does PE9 always re-encode files?
            the_wine_snob Level 9

            Jorge,

             

            It can depend on what you are starting with, as your source files, and then what the desired output is going to be.

             

            Basically, no, but there can be exceptions, but that will depend heavily on the source footage and the output.

             

            As PrE is a non-destructive editor, it is not working directly with the source files, but with links to them, and then instruction sets on how to process the data FROM those files, at Export/Share. So, PrE will always have to process the data FROM those files, to create the new AV file at Export/Share.

             

            Can you give us details, and explain exactly what you wish to accomplish. There might be some ways to improve things, but it will depend.

             

            Good luck,

             

            Hunt

            1 person found this helpful
            • 3. Re: Does PE9 always re-encode files?
              Jota_Tres Level 1

              Thanks,

               

              The source has the following spec:

               

              - Format: H.264/MPEG-4 AVC

              - Bitrate: Max.: Undefined

                 Average: 42.8 Mbps

                 Min.: Undefined

              - Frame rate (fps): Max.: ---

                 Average: 29.970

                 Min.: ---

              - Bitrate mode: Variable

              - Encoding profile: Baseline@L5.0

              - Resolution: 24 bits

              - Width (Pixel number): 1920

              - Height (Pixel number): 1088

              - Display aspect ratio: 16:9

              - Chroma subsampling format: YUV420p

              - TV standard: Undefined

              - Interlacing: Progressive

              - Encoding library: Undefined

              - Additional Parameters: CABAC: No

                 Reference Frames: 1

                 Bits/(Pixel*Frame) ratio: 0.683

               

              What i'm trying to accomplish is deliver trimmed and/or merged files with quality similar to the original files and with speed (no re-encoding ).

               

               

              Thanks again,

               

               

              Jorge

              • 4. Re: Does PE9 always re-encode files?
                the_wine_snob Level 9

                Jorge,

                 

                With the H.264 material, there is really no way around re-encoding the footage.

                 

                Sorry. In that case Neale is 100% correct.

                 

                Good luck,

                 

                Hunt

                • 5. Re: Does PE9 always re-encode files?
                  Jota_Tres Level 1

                  Thanks Bill.

                   

                  I found a way to trim but not in PE9. Using Quicktime X i can trim files without (i believe and i'm testing) re-encoding. I still have to find a way to merge files.

                   

                   

                  Thanks.

                   

                   

                  Regards,

                   

                  Jorge.

                  • 6. Re: Does PE9 always re-encode files?
                    the_wine_snob Level 9

                    Jorge,

                     

                    For simple trims, there ARE various programs, that use what is often called Smart Rendering. I did not know about QT X, but glad that you already have it. It seems that the Sony Vegas editors will do Smart Rendering too. This works very well with simple edits, however, when one adds Effects, any overlay, like superimposed Titles, or PiP, then all programs will need to Render/Transcode, even with Smart Rendering.

                     

                    Thanks for reporting, and good luck.

                     

                    Happy editing,

                     

                    Hunt