21 year old male- am I balding? (video included)

[ArabianPlantinga25]

For some background history first: I'm 21 years of age. On my dad's side my dad's hairline is quite receded (has been that way since he was in his 20s/30s) and his hair is somewhat thin. His brother's are all bald. His father was also bald. On my mother's side her father and brothers are not bald (or partially bald or anything; they're all fine). Now, for my hair, for as long as I can remember (at least for a few years) it always falls out during showers and when I brush my hair. I hear that's normal but I'm not sure how much is normal, if that makes sense. Anyway, my mother has been pointing out to me for a few years now that my hair is kind of thin at the top (my hairline and temples are perfect though) and that I may be in the early stages of balding. I've made a short video of myself below. I start the video by brushing my hair somewhat and showing what it looks like normally. After that I start to move my hand around my hair to show what it looks like when parted. If you guys can watch the entire video and provide any feedback, that will be much appreciated. Thanks!

https://www.youtube.com/watch?v=_ezl...ture=emb_title