5 Replies Latest reply: Jun 17, 2013 11:06 AM by Rallymax-forum RSS

    AME CS6 and % of cpu used

    Joe Riggs Community Member

      Hello.

       

      imac i7 3.4ghz

      24gb ram

      GTX 680MX

       

      When encoding is there anyway to get AME to utilize more of my cpu consistently?

       

      When encoding I'm seeing a fluctuation between under 10% use and 30-70% every other second. So one second it will be 8% then the next will be 53%, then back to 7%, then 47% and so on.  For a glorious few minutes it was up around 500% and  knocked about 20 minutes off the rendering time. Is this fluctuation typical for other users?

       

      Thanks   

        • 1. Re: AME CS6 and % of cpu used
          Rallymax-forum Community Member

          What is the output codec?

          AME can't render frames fast enough for simple ones.

          If the output is complex like h.264 something is wrong with the rendering (not to be confused with the encoding) of the frames.

          Does it play in the ppro sequence ok?

          • 2. Re: AME CS6 and % of cpu used
            Joe Riggs Community Member

            Avchd footage, output to blu ray h264. Plays fine in PPro sequence. 

             

            I had some flash frames in my previous export (user induced) so I'm re-exporting part of it.

            It's a 12 minute section, has colorista, magic bullet, and an adjustment layer on 90% of clips.

            Media is on 1 tunderbolt drive and I'm exporting to another thunderbolt drive.

             

            I'm getting that fluctuating cpu usage described above and

            AME is estimating 6 hours, does that seem normal or excessive with my setup?

            • 3. Re: AME CS6 and % of cpu used
              Rallymax-forum Community Member

              AH... there it is.

              Magic Bullet takes a long time and based on the fact that you're not at 100% across all cores, it would also mean that it hasn't been written (or the algorithm isn't possible too) as multi-threaded (so that it can run on multiple cpus at the same time).

              • 4. Re: AME CS6 and % of cpu used
                Joe Riggs Community Member

                so is that what is causing the fluctuation, magic bullet plug in?

                • 5. Re: AME CS6 and % of cpu used
                  Rallymax-forum Community Member

                  it's gotta be an Fx, most likely Bullet.

                  further, it's got to be a significant percent of the time to render and encode each frame if you're using h.264 output. h.264 is usually about 70+% of the per frame time so if your cpu are not pegged then Bullet is taking 90% or so of the time per frame.

                   

                  You can easily test this hypothesis. Preview the sequence first and then encode with "User Previews" checked. If it's fast then it's the rendering of the frame not the encoding that's the problem.