Some videos have wrong duration and FPS

[fqx]

Here is one media info. It's actually 1:21:54s

General
Complete name                            : *.mp4
Format                                   : MPEG-4
Format profile                           : Base Media
Codec ID                                 : isom (isom/iso2/avc1/mp41)
File size                                : 88.9 MiB
Duration                                 : 7 s 409 ms
Overall bit rate mode                    : Variable
Overall bit rate                         : 101 Mb/s
Writing application                      : Lavf58.20.100

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : [email protected]
Format settings                          : 1 Ref Frames
Format settings, CABAC                   : No
Format settings, Reference frames        : 1 frame
Format settings, GOP                     : M=1, N=75
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 5 s 818 ms
Bit rate                                 : 87.3 Mb/s
Width                                    : 256 pixels
Height                                   : 144 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Variable
Frame rate                               : 12 672.163 FPS
Minimum frame rate                       : 15.000 FPS
Maximum frame rate                       : 90 000.000 FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.187
Stream size                              : 60.5 MiB (68%)
Color range                              : Limited
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709
Codec configuration box                  : avcC

Audio
ID                                       : 2
Format                                   : AAC LC SBR
Format/Info                              : Advanced Audio Codec Low Complexity with Spectral Band Replication
Commercial name                          : HE-AAC
Format settings                          : NBC
Codec ID                                 : mp4a-40-5
Duration                                 : 7 s 409 ms
Bit rate mode                            : Variable
Bit rate                                 : 31.0 Mb/s
Maximum bit rate                         : 45.8 Mb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 44.1 kHz
Frame rate                               : 21.533 FPS (2048 SPF)
Compression mode                         : Lossy
Stream size                              : 27.4 MiB (31%)
Default                                  : Yes
Alternate group                          : 1

[fqx]

URL for this video on Youtube https://youtube.com/watch?v=DOzmItP2sHs