Change behavior on input change

[lu-zero]

Change behavior on input change

[haakonnessjoen]

You can probably do this via the SDK regardless of OS. Using BMDIdleVideoOutputOperation (bmdDeckLinkConfigVideoOutputIdleOperation).

[triwav]

Thanks for the suggestion. I was thinking this was something in the SDK as well. I think that's actually referring to something else though. I haven't had a chance to test it but I believe bmdcapture is actually making its own bars. If you look here: https://github.com/lu-zero/bmdtools/blob/master/bmdcapture.cpp#L384-L395 you'll notice it makes a bars array and then iterates over the video frame size. The one thing I can't figure out is it iterates over every height by one but it seems like it skips every other width. I'm not a C++ programmer so I'm not sure why that is. It looks the variable p is a reference to frameBytes which perhaps is an array or some other structure I'm not familiar with. I'll do some experimenting though and see what I can figure out.

[lu-zero]

I can update it to do that, thanks for the idea =)

[triwav]

I appreciate it. I was able to figure out the black video pretty easily by just doing

for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x += 2)
*p++ = 0x10801080;
}

(although if you just don't do anything it also appears to be black. What I couldn't figure out is how to show the last valid frame which is the ideal one for me. I tried assigning a reference to frameBytes and iterating forward and backward on the memory pointer to try and repeat but it always ended up being black. Thanks for your help on this.