unknown codec subtitle can not recognize and render

[luowengang 0]

index=2
codec_name=unknown
codec_long_name=unknown
TAG:language=chi
TAG:title=中文（简体）
index=3
codec_name=unknown
codec_long_name=unknown
TAG:language=chi
TAG:title=中文（繁體）

index=2

codec_name=unknown

codec_tag_string=[0][0][0][0]

codec_tag=0x0000

index=3

codec_name=unknown

codec_tag_string=[0][0][0][0]

codec_tag=0x0000

in this case，the sever cannot recognize and render the subtitle.

 

 

[Neminem 1803]

 

[Luke 42784]

 

Hi there, let's look at an example. Please attach the information requested in how to report a media playback issue. Thanks!

 

[luowengang 0]

2 hours ago, Neminem said:

 

 

41 minutes ago, Luke said:

 

Hi there, let's look at an example. Please attach the information requested in how to report a media playback issue. Thanks!

 

There is the attachement that I splited form the origin mkv useing mkvmerge tool.

It has two subtitle channels. It can be recognized and rendered in IINA palyer, but emby sever。

AI said that It is the S_TEXT/WEBVTT format，I don't know if it is correct.

test.mkv