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Multipasser
Multipasser
Inspiring
March 2, 2018
Answered

Video preview (mercury transit) not working in AE!

  • March 2, 2018
  • 3 replies
  • 6146 views

I'm running a new iMac Pro 10c with a USB-C hub with HDMI out.

The HDMI -> DVI cable goes in my 24inch JVC DT-V24L1D broadcast monitor.

Video Preview out is NOT working in AE, while it works perfectly in Premiere Pro !

And I troubleshooted almost everthing I know.

Reconnected the HDMI, because I've read AE sometimes maps video wrong?

Tried other USB-C ports.

Switching live between Premiere Pro and AE, hoping AE picks up the videolink.

Turned on/off mercury and choosing OpenGL/METAL and Software mode.

Nothing seems to work!

I'm very angry and frustrated because I'm a pro motiondesigner and I bought the 5k JVC screen + 2k blackmagic in 2011.

And AE NEVER ever outputted the preview on external monitor in realtime. Previews were always at 15fps!

Now after so many years and the introduction of USB-C -> HMDI I wanted to give it another shot... grrr still buggy as hell.

I hope someone can help me out, so I can finally start using that JVC screen.

My AE setup.

My Premiere Pro layout. This works perfectly.

It outputs 1080p to my JVC LCD when scrolling the timeline of the clips.

    This topic has been closed for replies.
    Correct answer polonius

    Hi,

    Try dragging the After Effects window away from the edge of your preview screen. I had the same problem and the reason was that my AE window was too close to the edge so that the screen showed me the Ae interface instead of the video preview.

    3 replies

    J
    Jaydude-wb
    Inspiring
    July 20, 2022

    The solution' that was honored as being a correct answer does not work for me.

    Maybe it works in a setup where the HDMI screen is used as an extended desktop.

    But what I need is to output Ae the Comp viewer directly to HDMI, without desktops or windows. Just like Premiere does. 

    In Premiere it is easy to select the second screen in the Playback Preferences, but in Ae, this looks different, and the second screen does not show up at all.

     

    I am on a MacPro 2019 / VegaII / Ae 22.5

    P
    poloniusCorrect answer
    Participant
    March 6, 2018

    Hi,

    Try dragging the After Effects window away from the edge of your preview screen. I had the same problem and the reason was that my AE window was too close to the edge so that the screen showed me the Ae interface instead of the video preview.

      T
      tshively@aquent.com
      Participant
      September 25, 2018

      polonius  wrote

      Hi,

      Try dragging the After Effects window away from the edge of your preview screen. I had the same problem and the reason was that my AE window was too close to the edge so that the screen showed me the Ae interface instead of the video preview.

      Thanks! Simple fix and it works!

      dlewyb
      dlewyb
      Participating Frequently
      October 26, 2021

      thanks @polonius 

      worked a treat. Be good if Adobe could lock that mercury preview screen down so no AE window could go there. Why would a user want a UI windoe behind a preview screen? And if they did accidently have it so, why would they want the preview to stop working? Makes no sense, except perhaps another example of unfinshed programming by the AE team. They've only been working on this for how many decades now?

      Also a quick toggle UI button for murcury on / off would very handy.

      Multipasser
      MultipasserAuthor
      Inspiring
      March 5, 2018

      Nothing?

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