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    Increasing speed issue

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    • J
      jamienesbitt last edited by

      Today is proving to be strange Isadora day. I have a scene where an envelope generator increases the speed of a movie from 1.3 to 1.5. When it does this the video really chugs, but the FPS says 30. If I run the movie at 1.5 speed, without ramping it up through the envelope generator,  it runs perfect.

      Any thoughts?
      Jamie
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      • Fred
        Fred last edited by

        Maybe too many vales, stepping this value every few frames will not give stepping artefacts visually but will give less vales and handling to the system.

        http://www.fredrodrigues.net/
        https://github.com/fred-dev
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        • Skulpture
          Skulpture Izzy Guru last edited by

          I think Fred is right.

          How long does it take to get from 1.3 to 1.5 also?
          Codec specification is also a critical choice here too.

          Graham Thorne | www.grahamthorne.co.uk
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          • J
            jamienesbitt last edited by

            Skulpture. It's taking 10 seconds. We have 1024 x 768 files with Photo jpeg compression. Thank you for your help...again.  Jamie

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            • J
              jamienesbitt last edited by

              Is there anything I'm doing wrong with compression for this particular issue?

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              • DusX
                DusX Tech Staff last edited by

                The video codec may have a big impact. H264 for example won't like speed changes. Prores or hap are probably best. Also, adding a MultiBlocker before the speed input might help. Start with a time of 1/30 And try 1/15 These should allow a value per frame or per 2 frames.. not sure what will perform best, but these are my starting points for testing.

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