The output file now shows 30fps, but it looks like 15 fps. 15 frames per second are recorded and each frame is doubled. Here’s an example of a 10fps 4K video, recorded with an EKEN H9 and an early firmware:Īs mentioned at the beginning there is another trick: Doubling frames. If it is less than 24fps it will be less fluent, more likely a stop motion video. Watch out which frame rate the camera can do in 4K. So how can you check if it is a real, native 4K camera? Frame Rate If the sensor / processor is not capable of doing 4K at a reasonable frame rate, the frames are doubled to state a better figure on paper. In other words the sensor’s output is a lower resolution than 4K and then the image is upscaled by interpolation. This process works by guessing or “interpolating” values based on a weighted average of known pixels in the vicinity. Upscaling uses known pixel values to estimate unknown intermediate pixels.
Therefore the original source at a lower resolution is upscaled to achieve a 4K output file. Real 4K or native 4K is simply explained: the original source (sensor output) is 4K resolution.Īs mentioned at the beginning, “4K cameras” sell better. Find out about the difference about real vs fake 4k: Although their output video size is 4K, it might not be real 4K. Simple reason, they sell better wearing this logo. There are a lot of action cameras branded “4K camera”.
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