請大家圍觀一下我的YouTube頻道視頻效果如何？

視頻清晰度如何？多謝！

My heart will go on: https://www.youtube.com/watch?v=C5_yDs7BP7w

Rolling in the deep:  https://www.youtube.com/watch?v=OS8eFhOYW1A

Hero: https://www.youtube.com/watch?v=zah_8gFYu_0

River of Babylon: https://www.youtube.com/watch?v=MOyNww4f7Os

Top of the world: https://www.youtube.com/watch?v=wDIG7ZEoSoE

Sad Movies:  https://www.youtube.com/watch?v=WVyJ-MJTcl8

End of the world:  https://www.youtube.com/watch?v=G6yo11aVMCE

Chinese song 中文歌：執著  https://www.youtube.com/watch?v=UqmcA2BPGyQ

至少還有你: https://www.youtube.com/watch?v=pg2C5DrMG-Q

一無所有:   https://www.youtube.com/watch?v=XP81e1hfOHE

幹杯朋友： https://www.youtube.com/watch?v=Z2TrP9lY4rY