视频无法在Safari（iOS）中播放

Question

这是video(click me)，无法在我的Safari（运行iOS 12的iPad Pro 10.5'）中播放。我签出iPad Pro Technical Specifications找出支持的视频格式（如下）：

然后我使用mediainfo列出视频元数据：

General
Complete name                            : /Users/cc/Downloads/kol_20180927_852fa122b13c3c3195daa44a56125edf.mp4
Format                                   : MPEG-4
Format profile                           : Base Media / Version 2
Codec ID                                 : mp42 (mp42/mp41)
File size                                : 7.55 MiB
Duration                                 : 5 s 272 ms
Overall bit rate mode                    : Variable
Overall bit rate                         : 12.0 Mb/s
Encoded date                             : UTC 2018-09-27 12:03:38
Tagged date                              : UTC 2018-09-27 12:03:38
TIM                                      : 00:00:00:00
TSC                                      : 30000
TSZ                                      : 1001

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L3.1
Format settings                          : CABAC / 3 Ref Frames
Format settings, CABAC                   : Yes
Format settings, ReFrames                : 3 frames
Format settings, GOP                     : M=3, N=29
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 5 s 272 ms
Bit rate mode                            : Variable
Bit rate                                 : 11.7 Mb/s
Maximum bit rate                         : 11.0 Mb/s
Width                                    : 720 pixels
Height                                   : 480 pixels
Display aspect ratio                     : 4:3
Original display aspect ratio            : 4:3
Frame rate mode                          : Constant
Frame rate                               : 29.970 (30000/1001) FPS
Standard                                 : NTSC
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Interlaced
Scan type, store method                  : Separated fields
Scan order                               : Bottom Field First
Bits/(Pixel*Frame)                       : 1.127
Stream size                              : 7.33 MiB (97%)
Language                                 : English
Encoded date                             : UTC 2018-09-27 12:03:38
Tagged date                              : UTC 2018-09-27 12:03:38
Color range                              : Limited
Color primaries                          : BT.601 NTSC
Transfer characteristics                 : BT.601
Matrix coefficients                      : BT.601
Codec configuration box                  : avcC

Audio
ID                                       : 2
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : mp4a-40-2
Duration                                 : 5 s 272 ms
Source duration                          : 5 s 355 ms
Bit rate mode                            : Constant
Bit rate                                 : 317 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 48.0 kHz
Frame rate                               : 46.875 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 204 KiB (3%)
Source stream size                       : 207 KiB (3%)
Language                                 : English
Encoded date                             : UTC 2018-09-27 12:03:38
Tagged date                              : UTC 2018-09-27 12:03:38

我认为它应该与iPad Pro兼容，但不兼容。我有想念吗？