Embedded subtitles fail to load

[sambartik]

Describe the bug

I have noticed that all of my embedded subtitles fail to load. When I select them, first I get "Loading subtitles" message and after a while the message disappears and a popup appears: "Failed to load subtitles". External subtitles are working.

I believe this is an error on jellyfin androidtv part, since other types of clients can display the very same subtitles OK. Also, it doesn't matter whether the media is transcoded or direct played, the issue occurs in both cases.

Logs

No response

Application version

0.13.0

Where did you install the app from?

Google Play

Device information

Sony Bravia KD-55XF9005

Android version

9

Jellyfin server version

10.7.7

[dfrincon]

same error from the first beta 0.13 shiledtv 2017 with external and internal .srt sub, jellyfin 10.8 nightly

[nielsvanvelzen]

Did you experience this issue with the previous version of the app (0.12.3)?

[dfrincon]

Did you experience this issue with the previous version of the app (0.12.3)?

i have installed now 0.12.3 same problem with internal sub, the problem is with ExoPlayer, with libvlc work.

[sambartik]

Did you experience this issue with the previous version of the app (0.12.3)?

I am not sure, I will try to install 0.12.3 back. Hopefully I will figure out how. Will report back.

[sambartik]

I have tried 0.12.3, 0.12.2, 0.12.0 and on all of those versions embedded subtitles did not work.

[sambartik]

Logs that might help:

03-19 23:23:06.821 27790 27790 D jellyfin-apiclient: Adding request to queue: http://192.168.1.2:9876/jellyfin/Videos/7f03fd462cbb8c86637ef915b3ca8330/7f03fd462cbb8c86637ef915b3ca8330/Subtitles/4/0/Stream.JSON?format=json
03-19 23:23:36.862 27790 27790 E jellyfin-apiclient: VolleyError com.android.volley.TimeoutError: null
03-19 23:23:36.862 27790 27790 E jellyfin-apiclient: com.android.volley.TimeoutError
03-19 23:23:36.862 27790 27790 E jellyfin-apiclient: 	at com.android.volley.toolbox.NetworkUtility.shouldRetryException(NetworkUtility.java:162)
03-19 23:23:36.862 27790 27790 E jellyfin-apiclient: 	at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:145)
03-19 23:23:36.862 27790 27790 E jellyfin-apiclient: 	at com.android.volley.NetworkDispatcher.processRequest(NetworkDispatcher.java:132)
03-19 23:23:36.862 27790 27790 E jellyfin-apiclient: 	at com.android.volley.NetworkDispatcher.processRequest(NetworkDispatcher.java:111)
03-19 23:23:36.862 27790 27790 E jellyfin-apiclient: 	at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:90)
03-19 23:23:36.864 27790 27790 E PlaybackController: org.jellyfin.apiclient.model.net.HttpException: VolleyError com.android.volley.TimeoutError: 
03-19 23:23:36.864 27790 27790 E PlaybackController: 	at org.jellyfin.apiclient.interaction.VolleyErrorListener.onErrorResponse(VolleyErrorListener.java:25)

[steelersfan7]

I get this same issue with a similar error. The jellyfin server logs indicate that ffmpeg extraction complete. When that happens 1-5 minutes(depending on the size of the file) android app will play the subtitles as they should. For some reason exoplayer is reporting to the server that it can't play srt subs(internal or external). There should be no reason to extract the srt files as best I can tell

2022-03-19 19:07:51.807 4423-4423/org.jellyfin.androidtv.debug E/jellyfin-apiclient: VolleyError com.android.volley.TimeoutError: null
com.android.volley.TimeoutError
at com.android.volley.toolbox.NetworkUtility.shouldRetryException(NetworkUtility.java:162)
at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:145)
at com.android.volley.NetworkDispatcher.processRequest(NetworkDispatcher.java:132)
at com.android.volley.NetworkDispatcher.processRequest(NetworkDispatcher.java:111)
at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:90)
2022-03-19 19:07:51.808 4423-4423/org.jellyfin.androidtv.debug E/PlaybackController: Error downloading subtitles
org.jellyfin.apiclient.model.net.HttpException: VolleyError com.android.volley.TimeoutError:
at org.jellyfin.apiclient.interaction.VolleyErrorListener.onErrorResponse(VolleyErrorListener.java:25)
at com.android.volley.Request.deliverError(Request.java:648)
at com.android.volley.ExecutorDelivery$ResponseDeliveryRunnable.run(ExecutorDelivery.java:104)
at android.os.Handler.handleCallback(Handler.java:883)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
Caused by: com.android.volley.TimeoutError
at com.android.volley.toolbox.NetworkUtility.shouldRetryException(NetworkUtility.java:162)
at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:145)
at com.android.volley.NetworkDispatcher.processRequest(NetworkDispatcher.java:132)
at com.android.volley.NetworkDispatcher.processRequest(NetworkDispatcher.java:111)
at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:90)

[zilexa]

After updating Jellyfin server then rebooting AndroidTV, the issue was gone but I only tested 1 episode.

[steelersfan7]

Yeah, but before you did those things, did you try and use the subtitle? Once you use a subtitle even once, it will load fine. Also, this only affects subrips, srt external. PGS etc load fine

[sambartik]

After doing some more poking myself, I have found that the error was due to a timeout to jellyfin API endpoint. The request took so long because on the jellyfin backend's side the embedded subtitles were being extracted from the mkv file itself by ffmpeg. The extracted subtitle file was then saved to /config/data/data/subtitles folder.

After the ffmpeg extraction was successfully completed, I had to manually switch to another subtitle and back to get it to display.

OK.

My questions are:

• Is the "Allow extraction on the fly" respected in my case? Despite having it disabled, the embedded subtitles were extracted via ffmpeg when I requested them in jellyfin android tv app.
• I had number of cases, where these extracted subtitles were completely blank. Maybe an ffmpeg error occured? Does closing the player in android tv app in the middle of subtitles extraction on jellyfin backend somehow trigger an ffmpeg error and thus results in a blank extracted subtitle?

[steelersfan7]

This is my findings too. I think exoplayer should be fully capable of playing subrips, SRT files natively, with no transcoding.

I understand that option only works for like one client, Kodi maybe?
I think the subtitles are extracted server side. I can't imagine the android tv app being reset would cause it to be blank

[sambartik]

I can't imagine the android tv app being reset would cause it to be blank

I meant it like this. The ATV client sends to the server that it has exited the player and stopped the stream to the backend. And that would result in backend killing the ffmpeg extraction process which would left blank file. This is pure speculation though.

[steelersfan7]

Yeah, sounds like it might be a seperate issue, or a sympton. In theory, it shouldnt be extracting anyway.