Can't fast forward certain MKV files

[Drake97]

Hello,

Currently I have a problem with a certain show that I put in my Jellyfin server, which is that it does not allow me to skip forward, because when I do it, either forward or backward, it returns me to the beginning of the chapter and I have to start from 0, this only happens with this specific show. Also, in the android app (in both cases using exoplayer) it doesn't even allow me to skip forward the video, only the bar appears and that's it, it's like blocked.
I read in some old threads here in the forum that it is due to the MKV container in which they are and I wanted to know if there is a way to repair that, maybe some tool of jellyfin or Linux, or maybe something like KKVToolnix, or failing that, I should resign myself to have this "problem".
Understanding that I got the file from another source, I don't know if you can still help me

Here the MKV details:

General
Unique ID                                : 184972110729733553382193406421851493977 (0x8B28552B5FD776AE434448958394D659)
Format                                  : Matroska
Format version                          : Version 4
File size                                : 2,61 GiB
Duration                                : 40 min 58 s
Overall bit rate                        : 9 134 kb/s
Frame rate                              : 23,976 FPS
Movie name                              : Mr. Robot S02E01
Encoded date                            : 2021-10-05 14:53:33 UTC
Writing application                      : mkvmerge v59.0.0 ('Shining Star') 64-bit
Writing library                          : libebml v1.4.2 + libmatroska v1.6.4
Attachments                              : PORTADA GDA MOVIES WEB 2.jpg / PORTADA GDA MOVIES WEB 2.jpg

Vídeo
ID                                      : 1
Format                                  : AVC
Format/Info                              : Advanced Video Codec
Format profile                          : High@L4
Format settings                          : CABAC / 4 Ref Frames
Format settings, CABAC                  : Sí
Format settings, Reference frames        : 4 fotogramas
Codec ID                                : V_MPEG4/ISO/AVC
Duration                                : 40 min 58 s
Bit rate mode                            : Constante
Bit rate                                : 7 672 kb/s
Nominal bit rate                        : 10 000 kb/s
Width                                    : 1 920 píxeles
Height                                  : 1 080 píxeles
Display aspect ratio                    : 16:9
Frame rate mode                          : Constante
Frame rate                              : 23,976 (24000/1001) FPS
Color space                              : YUV
Chroma subsampling                      : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progresivo
Bits/(Pixel*Frame)                      : 0.154
Stream size                              : 2,20 GiB (84%)
Default                                  : Sí
Forced                                  : No
Color range                              : Limited
Color primaries                          : BT.709
Transfer characteristics                : BT.709
Matrix coefficients                      : BT.709

Thanks in advance.

[TheDreadPirate]

The MKVs may not have been authored properly. But you can repackage the MKV without having to re-encode with this command.

Code:

/usr/lib/jellyfin-ffmpeg/ffmpeg -fflags genpts -i "/path/to/video.mkv" -map 0:v -map 0:a -map 0:s -map_chapters 0 -c:v copy -c:a copy -c:s copy outputFile.mkv

[Drake97]

The MKVs may not have been authored properly.  But you can repackage the MKV without having to re-encode with this command.

Code:

/usr/lib/jellyfin-ffmpeg/ffmpeg -fflags genpts -i "/path/to/video.mkv" -map 0:v -map 0:a -map 0:s -map_chapters 0 -c:v copy -c:a copy -c:s copy outputFile.mkv

thx, i'll try