4 Replies Latest reply on May 12, 2010 6:36 AM by Joys455

    Quality lost when using After Effect

    Joys455

      Hi,

      I'm experiancing a problem when I'm using after effect. Here what I'm doing:

       

      - Export a Tiff Sequence from Avid (all setting in max quality) in a 1080p23,976 project.

      - If I reimport the same sequence that I just export into avid everything is fine

      - So going into After Effect, put the sequence in a 1080p23,976 comp and reexport as is in a tiff sequence and reimport it in Avid, I got a lost of quality if I'm comparing the original with the AE file.

       

      Any thought about my problems?

       

      Nic

        • 1. Re: Quality lost when using After Effect
          Mylenium Most Valuable Participant

          Check your footage interpretation in AE for field settings as well as the import and export settings in Avid. Also take care to figure out which color ranges you use. The Avid is quite picky and if you tell it to use the wrong ranges, it will of course wrongly normalize them. Rec 709 is different from RGB....

           

          Mylenium

          • 2. Re: Quality lost when using After Effect
            Joys455 Level 1

            I'm not sure about the Interprete footage. Because my footage is in 23,98, After Effect doesn't have to analyse the 3:2 pulldown. The footage is in 23,98 in the interprete footage menu.

             

            I don't realy know if what can interprete footage can do more for me...

             

            Thanks

            • 3. Re: Quality lost when using After Effect
              Mylenium Most Valuable Participant

              What settings do you use exactly on all ends? this is critical, so please provide as much details as you can.

               

              Mylenium

              • 4. Re: Quality lost when using After Effect
                Joys455 Level 1

                Hi,

                Export from Avid:

                TIFF SEQUENCE 16 bit - Compression NONE, JPEG Quality 100%

                1920x1080 at the projet frame rate: 23.976p

                Color Space RGB

                 

                When reimporting that into Avid as is it works. No compression lost.

                 

                Import in AE:

                Bring the sequence in a 1920x1080 23.976p comp

                Pixel aspect square

                Rsolution full

                 

                Set the working space at 32 bits (float)

                 

                In interpret footage I<m using the Assume this frame rate and enter the 23,976 value.

                The Separate fields option is at off (I<m in 23,976p)

                 

                For export:

                In render setting:

                Quality is at best, resolution full, field render at off, comp frame rate 23,976

                In output module:

                TIFF SEQUENCE, post render action at none.

                Video output RGB, Depth millions of colors, color premultiplied

                In the format TIFF option nothing is select (LZW compression, IBM PC ordering)

                 

                When reimporting in Avid:

                Setting in RGB, Size for current workspace, Field ordered for curent format.

                 

                Thank you!