The SPCA 6350 / OV4689 Processor and sensor combo does a decent job faking 4K. Some Youtubers even claim (incorrectly) that it’s better than GoPro 4K! You might not be able to tell the difference on a smaller screen… But it is only 1/2 the resolution of real 4K, and since it uses MJPG instead of H.264 for 4K mode, there is a lot of compression artifacts. It is also only 25FPS instead of 30, making it jittery at times. Some shots even got corrupted. This was filmed with an H9R clone (same cam as Akaso EK7000, but unbranded). It is also found in Eken H9 and a bunch of other cams around $50 – 60 on Amazon/Gearbest/AliExpress/etc.