The sound I remember is different from the one in the video. The river near where I lived growing up (Rock River in Illinois) got significant ice every year but it was seldom "safe" enough to walk on as it was not very thick. We walked on it anyway. Often when we walked out 20 or more feet from shore, the ice would suddenly get a huge 30 foot or longer crack. When the ice cracked, there would be a huge sound like a really loud rifle shot or the crack of a bull whip. When we heard that sound, we had achieved our purpose in going out on the ice.