Perf mode: "HD" is now 360p

[zmwangx]

Geez, this is getting ridiculous. Whenever you think they can't sink lower, they always find a way. Life always finds a way.

Example: https://live.48.cn/Index/invedio/club/1/id/2861, https://ts.48.cn/snh/20190529/gaoqing/337596915956649984.m3u8.

$ metadata 337596915956649984.mp4
Filename:               337596915956649984.mp4
File size:              1480497919 (1.49GB, 1.38GiB)
Container format:       MPEG-4 Part 14 (MP4)
Duration:               03:06:30.04
Pixel dimensions:       640x360
Sample aspect ratio:    1:1
Display aspect ratio:   16:9
Scan type:              Progressive scan*
Frame rate:             25 fps
Bit rate:               1058 kb/s
Streams:
    #0: Video, H.264 (High Profile level 3), yuv420p, 640x360 (SAR 1:1, DAR 16:9), 25 fps, 983 kb/s
    #1: Audio (und), AAC (LC), 48000 Hz, mono, 70 kb/s