Ambarella's new chip - Dual 8K video, 4K at 240fps

Small devices like action cams will be able to capture video at up to 8K at 30fps or 4K at 240fps. The CV5 will also support HDR processing to balance out extreme lighting conditions as well as do image stabilization, all on-chip."

https://www.cnet.com/news/your-next-drone-or-action-cam-will-shoot-8k-video-4k-at-240fps-with-ambarellas-new-chip/