I've moved your post from Using the Community (for questions about the forums) to After Effects, based on seeing "After Effects" in the white area. If you are using Premiere Pro or Photoshop, let us know so we can move your post again.
/t5/after-effects-discussions/why-can-t-i-render-video-at-18-fps/m-p/14354798#M242510Jan 14, 2024
Jan 14, 2024
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Most video formats have frame size and frame rate standards. For example, h.264 must have an even-numbered frame size because color is compressed in blocks of 4 pixels. DV formats must have frame rates that correspond to DV video standards, including pixel aspect ratio, frame size, and frame rates. You have chosen a format that does not support 18 fps. I'm guessing that you have chosen H.264 as the codec. If you need exactly 18 fps for a specialized playback system, consult the user manual or guide for that system.
/t5/after-effects-discussions/why-can-t-i-render-video-at-18-fps/m-p/14355143#M242526Jan 14, 2024
Jan 14, 2024
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Video formats like H.264 typically adhere to specific frame size and frame rate standards. H.264, due to its color compression method in blocks of 4 pixels, requires an even-numbered frame size. If you require an unconventional 18 fps, especially for a specialized playback system, refer to the system's user manual for guidance.
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