Emby doesn't detect bitmapped(idx/sub) subtitles properly

[oRBIT 0]

I'm trying to play an MKV with external bitmapped subtitles (idx+sub). Emby only detect the first subtitle (even if there are many), but language isn't detected properly either, it just says "UND (SUB)". I can happily provide logs anywhere but here (since they seem to contain personal information).
Another MKV with embedded bitmap subtitles (only one though) seems to be detected properly.

I'm running EmbyServer 4.6.7.0 on my Synology DS918+.

I attach the transcoding log. The embyserver.txt logfile seems to contain alot of private information which I don't feel like sharing here to be honest. If anyone responsible still needs it I can perhaps it send it in a pm.

ffmpeg-transcode-ccb374b3-01a7-4389-a1a0-4cf0a7c16bec_1.txt

Edited May 26, 2022 by oRBIT

[Luke 40114]

Hi, we don't try and extract the language from the subtitle file, so you have to name it according to our subtitle naming conventions in order for Emby Server to be aware of the language:

https://support.emby.media/support/solutions/articles/44001159160-subtitles

[oRBIT 0]

But it only see one language in the idx/sub instead of perhaps 10.

[Luke 40114]

17 minutes ago, oRBIT said:

But it only see one language in the idx/sub instead of perhaps 10.

I understand. We don't currently support multiple subtitles within the same file. It's possible for the future.