AVerMedia Live Streamer Ultra HD Capture Card

This is one of the only PCIe x1 4K capture cards, and it's Gen 3 where most are Gen 2. I was really hoping to use this for my Sony A6700 green screen camera, but sadly only NV12 option shows up in 4K but it does support 2K30 P010. You're going to have to shell out the money for a Blackmagic Decklink Quad, or record internally and do your live preview with NV12 or drop down to 1080p, which isn't that bad, just a slower workflow but you can transfer the files via Wifi.

La compre porque según tiene soporte en linux y nada, funciona cuando quiere, al menos con obs, casi siempre tengo que configurar como si fuera la primera vez

Replaced a USB Video capture device that was hogging the USB data stream. This installed quickly, and worked immediately. I'm happy with it.

I often have a need to record video from portable devices. One of the biggest problems I've had with these kinds of devices is the latency. I wish I could capture an HDMI device in a window and play it from there. I had hoped that this would have a negligible latency. Unfortunately, the latency is high enough that action games aren't able to be played directly from OBS. The video from the capture device was almost 0.1 seconds behind. The latency is small enough that turn based RPGs are playable. To be confident, I ran a video file that counted from 0-59 at 60fps. It confirmed that the capture stream was around 5 frames behind. This works out to be around 80+ ms. Installing it was easy. I did not have to install any drivers. It was recognized as a webcam by my OS. Importing it into OBS was also easy to do. I love that it can capture in 4K and I love that it has pass through. Because of the latency of the capture mode, passthrough is essential for playing games as I stream it.

Plug and play, and easy to use. If you have free space on your motherboard, it will require a PCIe x1, x4, x8, or x16 slot (only one slot required). Be aware this is the budget model and only supports HDMI 2.0 input Quality.