I have been trying to get hyperion working with an external tv source since Oct 2015. Almost 1 year and I think I have tried every possible configuration option.
The good:
Hyperion and the LEDs work fine with Kodi and also with hyperion remote effects.
The bad:
The problem is with getting a good capture, because the LEDs only output black and white, flickering horizontal colored lines, or both.
I use a usb hub with power supply to power the stk1160 grabber to eliminate power issues. I have set my HDMI2AV to PAL and NTSC many times, and changed the hyperion config file to NTSC and PAL many times.
Clues:
1. When I connect the AV output from the HDMI2AV, I can see that sometimes the picture is black and white, sometimes it has color but there are horizontal colored lines (looks something like interlacing with wrong frame rate), and sometimes the picture looks good.
2. When I try to take a screenshot using SSH, the resolution I input (width, height) is never respected. The resolution is predetermined by the NTSC or PAL setting in the config file ONLY. The width and height options do nothing.
3. The resolution programmed into Hyperion for PAL mode seems to be wrong (360x192). PAL at full res is 720x576 and built into Hyperion I believe it should be captured at 360x288. However, Hyperion forces 360x192 and there is no way to change it.
<code>
root@osmc:~# hyperion-v4l2 --width 360 --height 192 --screenshot
hyperion-v4l2:
version : V1.03.0 (GitHub-b8f7642/c5d5f2d-1465599599
build time: Jun 11 2016 01:39:39
V4L2GRABBER INFO: width=360 height=240
</code>
4. I can reset the video when HDMI2AV is outputing the black and white, or video with colored lines by reinserting the power and the hdmi cable. The HDMI2AV can work properly in both NTSC and PAL mode, if there really is a difference when I switch between NTSC and PAL I havent seen it.
Here is a sample of the "interlacing" issue which flickers my LEDs.
<img>https://postimg.org/image/i3blfpdpz/</img>