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  • C4D gi flickering

    Posted by Djordje Mojsilovic on November 8, 2018 at 11:39 am

    Help.
    I am currently working on an animation of 125 frames, and i get gi flickers when i render out the animation.
    I have used standard renderer(for much faster time, and physical had stained surfaces).
    I have tried both QMC+QMC & Irradiance Cache + QMC as first and second methods, but
    i get light and shadow flickers and shivers when i render out animations.
    And i have used GSG light studio.

    I have searched the entire google in the last two days and i cannot find the solution.
    Also when i make a custom lightstudio and switch to phisical and turn off GI i get sub par results.
    I just want to solve the flicker… Could i bake the lights? What could be causing this?

    Here are the settings screens, and the examples of the flickers:

    https://www.youtube.com/watch?v=FQTI-rm8CFM IRC

    https://www.youtube.com/watch?v=pRTjGevXiuc QMC (export is short but shivering is visible)

    Thanks in advance!

    Carlos Zenteno replied 5 years, 11 months ago 3 Members · 2 Replies
  • 2 Replies
  • Brian Jones

    November 9, 2018 at 3:30 am

    the help has a bunch of useful info on GI – it depends on what you are lighting your scene with and the scene objects themselves what’s going to work. In general terms more samples is good (if a lot slower).
    And it’s more complex now with reflectance materials etc. It would help to see the scene file

  • Carlos Zenteno

    August 18, 2020 at 8:11 pm

    Hey Djordje!

    I was having this problem yesterday. I have lights (softboxes) in my composition and in almost all the forums they said that I needed to disable the GI and try to emulate the result with more lights in order to get rid of the flickering, but I really liked the way it looked with the GI. I tried Irradiance Cache and QMC (primary & secondary) with the samples set to high and the irradiance cache set to medium. This worked perfectly for me. I had to wait a little bit more for the render, but I left my computer working through the night after I was satisfied with a short LQ preview (It was nothing compared to the rendering time that the QMC +QMC was throwing).

    Hope you found a solution!

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