Latest post Wed, Aug 2 2017 6:50 PM by BrettG. 5 replies.
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  • Wed, Jul 26 2017 8:06 PM

    • BrettG
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    Timewarp slow motion issues

    Hi all,

    I was hoping an MC version upgrade may solve this issue, although it doesn't seem likely from what I am reading on the forums... but I am having an issue with slow-motion Timewarp effects on transcoded material. 

    I am using OS 10.11.6 and MC 8.8.2, although I have been able to recreate this problem on other MC versions and OS versions. 

    Specific problem is: I am getting some intense blurring and video artifiacts when footage is slowed-down via Timewarp. There is a lot of fast motion and things moving in the shot, yet, I for similar shots we have never experienced problems like this with older workflows. What's changed is the original media is now captured in 6K+. After AMA linkining to this orginal RED media, I then transcode the original media into an HD project for the editor to work in. This is our "proxy" version. Of course, with the original RED material shot in 6K, a frame-flex effect is automatically applied to our HD transcoded material. I cannot remove this effect in the HD timeline. Could this be interfering with a slow-motion Timewarp? Generally, we only see problems when we slow down the material, not when we do speed-ramps. 

    Thanks in advance for any help on this!

  • Mon, Jul 31 2017 8:39 PM In reply to

    • jef
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    Re: Timewarp slow motion issues

    It might be worth checking to see what settings are selected under the Render Settings tab of MC main settings window.

    It defaults to "Use Frame Blending in Motion Adapters" which I personally do not like as it sets blending in some of the timewarp settings where I wish to be in explicit control of that.

    Jef

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  • Wed, Aug 2 2017 5:47 PM In reply to

    Re: Timewarp slow motion issues

    Hate to ask the obvious, was the media shot @ high speed meant to be played at the slowerspeed? Did you try adjusting the rate prior to transcoding in source settings?

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  • Wed, Aug 2 2017 5:56 PM In reply to

    Re: Timewarp slow motion issues

    When you transcode to HD you can choose to bake in the frameflex effect. You then won't have it on the transcoded media.

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  • Wed, Aug 2 2017 6:28 PM In reply to

    Re: Timewarp slow motion issues

    "You then won't have it on the transcoded media."

    Did you mean to say you won't have to use the effect on traqnscoded media? 

    Most are New MacPro 12 core or 8 Core 2012 MacPros with 24+ Gb Ram nvidia gtx 1070 [view my complete system specs]
  • Wed, Aug 2 2017 6:50 PM In reply to

    • BrettG
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    Re: Timewarp slow motion issues

    Hi Jef,

    Thanks for the suggestion, but I got the same result -- even with a Fluid Motion render.

    This just may be a result of the nature of the footage itself that we are attempting to slow down... which is a desert landscape with lots of tracks, trails, etc. made by ATVs and dune buggies, which results in many many patterns in the sand that Timewarp is having a tough time blending. Top half of the frame, the horizon line, renders perfetly, however.

    And yes, to others questions, this 6K footage was shot at 29.97 fps, problem is, we don't know what footage will need to be slowed down until post, when we need it to fit with newly written narration. But thanks to all for the help and suggestions.

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