6 Replies Latest reply: Dec 17, 2011 6:00 PM by shooternz RSS

    How do I render best quality in 1920x1080 / having problems.

    onehunlow

      Im at the end of a film.

       

      Shot on Canon HV20 1940x1080.

       

      Im trying to render a clip at full 1940x1080 BEST QUALITY, when I press match sequance it makes the settings 1440x1080 mpeg preview.

      There is no custom setting under AVI.

       

      Ive tried also H.264 HDTV 1080p 1920x1080 and it comes out the same as 1440x1080. Theres a lot of noise on the picture.

      Is there a big difference between 1920 and 1440?

       

      Im sure I set up the project HDV 1080.

       

       

      Advice/ Help please!!

        • 1. Re: How do I render best quality in 1920x1080 / having problems.
          J. Simon Community Member

          1920 is full resolution HD.  Some types of HD don't use the full resolution, they use 1440 and 'stretch' the image out to fill the 1920 frame.

           

          So what is the purpose of your export?  That will determine how to proceed.

          • 2. Re: How do I render best quality in 1920x1080 / having problems.
            onehunlow Community Member

            Well, I'd like the best quality, one for a back up, and one for a preimire on a big screen (so im guessing the best possiable for that).

             

            The manual and website say the camera is 1920x1080HD.

             

            Advice plz. Thanks for your reply.

            • 3. Re: How do I render best quality in 1920x1080 / having problems.
              onehunlow Community Member

              Just read 1920x1080 only renders in PF24 Mode...whats that??

               

              Ive just read this

              Oh boy!  This is a big discussion, and I highly recommend that you read the HDMI threads, but I'll give you the short version.

               

              First, let me tell you that the sensor is actually bigger than 1920x1080, which is 2 megapixels.  It's actualy 3 megapixels for photographs, but it's masked off.

               

              You are probably capturing through firewire off of your videotape.  HD video is ALWAYS 1440 x 1080 with 4:2:0 colorspace and a 1.33 pixel ratio.  The pixels are stretched to give the wider format. 

               

              That is the technical standard to fit the video stream within the data rate for the mini-DV tape.  Every HD camera that records to mini-DV uses that format.  You are not losing anything compared to any other camera.

               

              The interesting thing is that the output from HDMI is 1920x1080 with 4:2:2 color space and square pixels.  The HV20/HV30 is one of the few that has HDMI output.

               

              There is much debate on whether the data stream is being intercepted before it's compressed (which is what it appears to be IMHO since there is more detail in the HDMI capture.) HDMI Comparison Thread.

               

              HDMI is captured with an Intensity card by Black Magic Design.  The biggest drawback of this is you need a computer running at the same time.  That means indoors, or with an extension cord, or portable power. Portable Intensity Thread.

               

              A big advantage is you get two videos at once.  One on the computer and one on the video tape.

               

              So its

              1440 firewire max

              1920 for HDMI.

              • 4. Re: How do I render best quality in 1920x1080 / having problems.
                J. Simon Community Member

                one for a back up, and one for a preimire on a big screen

                 

                Backup is easy.  You want some type of lossless file.  On the PC side of things, there are three options that work well.  Choose Microsoft AVI, and set the codec to None.  You can also separately install a couple of free codecs - Lagarith and UT - which will create smaller compressed files, but using lossless compression (which means you don't lose any quality).

                 

                For big screen delivery, export will depend on how the theater shows it's movies.  You'll need to find out what the theater needs, format wise, in order to export a compliant file.

                • 5. Re: How do I render best quality in 1920x1080 / having problems.
                  AtonMusic Community Member

                  Render out in Highest quality possible...

                  Perhaps ProRes 422HQ or 4444 if you are going to CC in RGB in After Effects.

                  Quicktime's Animation... is also a good choice...

                   

                  I personally render out the Master as a DPX/Cineon or Tiff. Then I'll CC and Master that one.

                   

                   

                  After rendering out, THIS is your MASTER file. And you use that to make copies of. Be that H.264 or whatever.

                   

                   

                  PS --- I hope your file is 1920x1080 and NOT 1940x1080

                   

                  Check that out !

                  • 6. Re: How do I render best quality in 1920x1080 / having problems.
                    shooternz Community Member

                    Render out in Highest quality possible...

                    Perhaps ProRes 422HQ or 4444 if you are going to CC in RGB in After Effects

                    .

                    Does padding the data to 444 give you any post advantage apart from a massive file size full of "0s"?