The main reason I installed ambilight using Hyperion was to bypass the HDCP protocol when I watch netflix from my computer in full resolution. Previously, I used software similar to Hyperion cature software, but whenever I turn on the hdcp content, the signal is blocked by such software.
I put the hyperion on the raspberry pi 3, I stream the leds through the GPIO pin (ws281x) and use a common video grabber like this one.
Problem:
Noticeable time interval in leds than what is happening on the screen, around a second, which is quite distracting as scenes change etc.
I reduced the resolution of the grabber to 360p, size decimation is 8 (increasing the value does not bring the desired results), I was also afraid of the "smoothing" settings, reducing the Time value to 50 which improved the performance a little but the delay is still strongly felt.
I was starting to think that this could be a problem with such a video grabber.
I also noticed that using the Hyperion screen capture delay is not noticeable at all, which surprised me a bit (raspberry pi is connected by WLAN) but with this solution I can not enjoy the full resolution of the content and the LEDs on the back.
Can you recommend any video grabbers without delay that would work on the usb 2.0 interface? Does it make sense to buy a usb 3.0 grabber for raspberry pi 3 which only has usb 2.0? (pls with HDCP support)