subtitles are not available

[Florian2000 17]

Hi,

I just merged videofiles and subtitles via MKVToolNix and now the subtitles are not available in emby (Windows / Android).
What causes this? Because VideoLAN Player recognizes the subtitles just fine...so they are within the mkv container file.

Any idea?

Br, Florian

[Luke 42080]

Hi, did you run a library scan after changing the file?

[Florian2000 17]

12 hours ago, Luke said:

Hi, did you run a library scan after changing the file?

yes, I always do.
The interesting thing is that the additional audio language is there for selection. Only the subs are missing.

subtitles according to VLC:

the container format is mkv.
The tracks within MKVToolNix:

 

[Luke 42080]

Try refreshing the metadata on that file and see if it helps.

[Florian2000 17]

12 minutes ago, Luke said:

Try refreshing the metadata on that file and see if it helps.

just did...nothing changed. still no subs there.

[Luke 42080]

1 hour ago, Florian2000 said:

just did...nothing changed. still no subs there.

Hi, server log from doing that? Thanks.

[Florian2000 17]

1 hour ago, Luke said:

Hi, server log from doing that? Thanks.

I hope there is nothing in the log which shouldn't be seen...I took the portion where I think this was the related stuff from refreshing the metadata.

embyserver.txt

[Luke 42080]

Are they internal subtitles or external?

[Florian2000 17]

the subtitle files are srt files which are now in the mkv container.

[Happy2Play 9782]

@Lukedoes it matter that the subs at least from image above are internal "WebVTT"?

In a test Emby only sees external VTT not internal VTT.

[Happy2Play 9782]

 Additional info from ffrpobe

  Stream #0:4(chi): Subtitle: none (default)
    Metadata:
      BPS             : 43
      DURATION        : 01:49:14.664000000
      NUMBER_OF_FRAMES: 983
      NUMBER_OF_BYTES : 35681
Unsupported codec with id 0 for input stream 4

Media info

Text #2
ID                                       : 5
Format                                   : S_TEXT/WEBVTT
Codec ID                                 : S_TEXT/WEBVTT
Duration                                 : 1 h 49 min
Bit rate                                 : 43 b/s
Count of elements                        : 983
Stream size                              : 34.8 KiB (0%)
Language                                 : Chinese
Default                                  : Yes
Forced                                   : No

Looks like it maybe an old open defect.

#5641 (Support WebVTT according to MKV specs) – FFmpeg

[Florian2000 17]

11 hours ago, Happy2Play said:

In a test Emby only sees external VTT not internal VTT.

what is the difference between external VTT and internal VTT?

[pwhodges 2012]

External - separate file; internal - embedded as stream in MKV.

Paul

[Florian2000 17]

so is it a bug, isn't it?

[Florian2000 17]

4 hours ago, Florian2000 said:

so is it a bug, isn't it?

interesting thing is that the subtitles from netflix work just fine within mkv.

So there must be a difference between internal SubRip/SRT (netflix format) and internal WebVTT (disney+ format).

Edited January 3, 2022 by Florian2000

[Luke 42080]

it looks like ffmpeg currently does not support this, so your best bet for now is to either keep them external, or embed them as a different text format such as subrip.

[Florian2000 17]

On 1/4/2022 at 7:01 PM, Luke said:

it looks like ffmpeg currently does not support this, so your best bet for now is to either keep them external, or embed them as a different text format such as subrip.

and how does the VLC player manage to play them correctly?

[pwhodges 2012]

VLC is not just a front-end for ffmpeg; it has additional modules containing codecs etc which are not included in ffmpeg.

Paul

[Florian2000 17]

1 hour ago, pwhodges said:

VLC is not just a front-end for ffmpeg; it has additional modules containing codecs etc which are not included in ffmpeg.

Paul

why not take the code from vlc then?

would also solve the *.iso playback...which is much better solved in VLC, too...