I picked a bunch of red "berries" from some mature heavenly bamboo (Nandina domestica) plants today. I watched a couple videos on how to pick the mature seed pods, and how to open them and whatnot.

I have two questions.

1) Is it normal for there to be two seeds in one red pod/berry? When I open them, it looks like one whole seed but then it falls apart, and there are in fact two per pod.

2) What color should the seeds be? The ones on videos appear to be more light colored, while the ones I have are darker.

Do I have viable seeds to plant or not..?