MP4 benchmark

Benchmark setup: (1) Open Dev Tools -> Network (2) Disable cache (3) Throttle network to 4G (12Mbps/50ms for USA, 60Mbps/30ms for Korea)

Elapsed: 0.0 s / Frame: 0 / Size: 0.0 MB / FPS: 0.0

Concurrency: Capture: Preview:

Elapsed: 0.0 s / Frame: 0 / Size: 0.0 MB / FPS: 0.0 (Rewind: 0)