Can't play m3u8 (HLS) on macOS Big Sur Safari

Copy following link to safari:

https://d2zihajmogu5jn.cloudfront.net/bipbop-advanced/bipbop_16x9_variant.m3u8

- Case1: macOS Big Sur (11.0.1) + Safari (14.0.1 16610) x86 vm ==> Can't play

- Case2: macOS Big Sur (11.0.1) + Safari (14.0.1 16610) Applie M1 mac book pro ==> Can play some frames then stop

- Case3: macOS Catalina (10.15.17) + Safari 14.0.2 15610) x86 mac book pro ==> Can play well

Is it a bug of Big Sur safari?

Thanks