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Latency between image and audio on a video projection

HoudiniHoudini
in MAIN

Hello,

I have a problem of synchronization between the image and the audio on a video projection for a live theater show.

The video and audio source are both from the same mov file.

Here are the technical specs:

  • Millumin version is 4.18.i
  • MacBook Air M1 2020 8G RAM
  • mov file resolution is 1920 × 1080
  • Video image projected with Optoma EH470 plugged with HDMI cable
  • Sound output: Macbook plugged with Mini-jack (3,5mm) to a Soundcraft audio mixer and then plugged with XLR to 2 Mackie Thump 215 stéreo speackers.

When I play the file on the computer with millumin, using the computer sreen and listening with the computer speakers there is no synchronisation problem. When I plugg it to the video projector and to the audio système I have a delay between the image and the audio!

Any ideia?

Best regards,

Rafael

Comments

  • MilluminMillumin

    Hello @Houdini,

    It looks like that the processing time for the video and the audio is different : is the audio late (in comparison of the video) ? What is this delay : 1 second ? 50 ms ?

    Be sure to check the latency of your sound system. If needed, you can add a delay your your video outputs in Millumin/Outputs. See this article.

    Best. Philippe

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