jellyfin-androidtv
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jellyfin
[Bug] Subtitles Don't Always Load
Subtitles don't always load, tested on Nvidia Shield TV and a Mibox. Some films they do and others they don't.
On the films they don't, this usually occurs with me selecting the subtitle I want, then it says "Loading subtitles", I let it sit for a minute or two, sometimes it just lingers and most times it ends up saying "Subtitles could not be loaded"
(Unrelated but another issue I've come across with subtitles is sometimes I would click "No subtitles" to disable them, they go away but then about 30sec later they turn back on, I go back and manually disable them again (The "no subtitles" is still selected which is odd, I just click it again) and then it's fine throughout the rest of the show.
Have you happened to notice if this happens for a particular subtitle format? I have noticed this also, but haven't tracked down the specifics as to what causes it.
Have you happened to notice if this happens for a particular subtitle format?
Not entirely sure, but it was happening on a series that had SUBRIP subtitles.
Just tried watching a movie (Different from my original post) that has SUBRIP subtitles as well, and the same occured. I click the subtitle of choice, it says "Subtitle loading..." just lingers and eventually says "Subtitle could not be loaded".
Can't say for sure whether or not it's SUBRIPS. But I was having issues with anime subtitles, and I know at least one of the shows was using ASS subtitles. Same issue. I didn't try it with the movie I got done watching, but usually with anime, if I go into options and enable external player, and have it open in MxPlayer.. it plays perfectly fine with the subtitles. I'd assume this to be the case with the movie as well, but unable to check right now.
The subtitle selector is a bit broken, I haven't found the underlying issue yet. In version 0.13 (after the next major release) we're going to rewrite a lot of code related to the playback functionality so this issue should be fixed then.
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Seems to still occur every now and then, however it seems to be working overall far more often than it used to.
This bug is still actual. How can I help you to fix this? I use exoplayer forced.
I've been using Kodi with Jellyfin, and it's been working great personally Probably won't be going back to the app But yeah that's your temporary solution maybe
Problem : Kodi on TCL 55C715 => 17 fps (on 20160p video) Plex media player all is ok (exoplayer) Jellyfin all is ok with exoplayer but subtitles problems...
If you have a clue of the part of the code to fix i can check a little bit (former C# dev.)
I am also having this issue on Nvidia Shield TV. I almost always get the subtitles eventually though, but only after waiting with the message "Subtitles loading" message for a minute.
Sometimes I have to manually select no subtitles and then select the subtitle yet again before getting it to work.
This issue has gone 120 days without comment. To avoid abandoned issues, it will be closed in 21 days if there are no new comments. If you're the original submitter of this issue, please comment confirming if this issue still affects you in the latest release or master branch, or close the issue if it has been fixed. If you're another user also affected by this bug, please comment confirming so. Either action will remove the stale label. This bot exists to prevent issues from becoming stale and forgotten. Jellyfin is always moving forward, and bugs are often fixed as side effects of other changes. We therefore ask that bug report authors remain vigilant about their issues to ensure they are closed if fixed, or re-confirmed - perhaps with fresh logs or reproduction examples - regularly. If you have any questions you can reach us on Matrix or Social Media.
Hi all, just wanted to mention I have the same issue on my shield. No issue with plex on the same files. Happens a lot on my setup.
Same issue on Nvidia shield. Happened in v0.11, v0.12 and now still happens in v0.13.
Issue occurs for both subs that are include in the mkv container as well as normal .srt subs that are downloaded separately. Selecting a subtitle track will show "loading subtitles" and sometimes after a while it fails to load the subs. I have to retry 2-3 more times before it actually loads the subtitle track.
It seems that it happens randomly and in all files. Sometimes the same subtitle track that caused issues will load with no issues when trying a few days later and then if you try again it will fail.
Looks like something is broken in the subtitle selector.
I also have the problem on android tv, but only in the files where the subtitles are SUBRIP..
I tested it on mi box s, and on smart tv, brand SMART TECH
So this one was rather easy to discover after an hour or so of observation.
Basically what's happening is the subtitles streams are parsed during library import, but not extracted. When subtitles are requested, ffmpeg is invoked on the server to pull the stream out of the file. This results in a full file scan (so if you have a 20G file, it can take A While) to get the 31KB file out. A simple hour television recording of 4G can take over 40 seconds to get the subtitle out.
The file is then stored in the server cache, and served via json to the client for subsequent loads. If the subtitle is not needing to be ripped out of the container, it is then immediately served via json to the client, skipping this entire file scan and can immediately return the information.
So, what can be done? It's actually pretty simple here, Exoplayer already has full subtitle support, and if the subtitle is embedded in the file, try loading from Exoplayer first, then fallback to the json method if it fails. This results in a 0s subtitle delay, and reduces server load. This is confirmed by using an external player (like Just Video Player) using the Jellyfin stream and getting instant seeking + subtitle loading.
The additional enhancement here is to add a subtitle load retry, there's a single 30s timeout request and if it fails it throws the downloading subtitles error. 3x by 15s would be a huge improvement.
Anyway, this didn't seem to be well understood - hopefully it helps.
@seniorm0ment v0.13.0 adds support for Subtitle preferences and Jellyfin 10.8.0 adds lots of changes to subtitles https://jellyfin.org/posts/jellyfin-10-8-0/
Can confirm as well, same as @trablin45. :) The extraction takes a long time, and the only way I've found where I can track it, is with debug logs enabled. Not that it is practical in any sense, just noticed it when I was trying to figure out what was happening.
If the extraction cannot be done faster, perhaps a middleground can be found in having the extraction done automatically when media is added to the library. I think the majority of users with this problem wouldn't mind that :)
Anyways, I hope a fix / solution can be found on this 👍
totally agree with @paaff an utility to auto-extract subs when server is not in use will be extremely useful and a complete solution to this problem
If the extraction cannot be done faster, perhaps a middleground can be found in having the extraction done automatically when media is added to the library
Isn't this what the Subtitle Extractor plugin essentially does, except on whatever schedule you set
If the extraction cannot be done faster, perhaps a middleground can be found in having the extraction done automatically when media is added to the library
Isn't this what the Subtitle Extractor plugin essentially does, except on whatever schedule you set
The default "subtitle extract" plugin doesn't do anything to me, it stays at 0.00%, also it would be great if it let you set to extract the sub to the video folder or to just trigger manually per video (If some videos just work fine and don't need extraction)
Yea I can confirm this is still an issue. I also had tried Subtitles Extractor plugin and tbh I don't like the implementation and deleted it. It will extract each and every associated subtitles, it took up many disk space (I completed about 35 percent after many hours running it and it took like 3.6GB which is unbelievable for a bunch of text files) I really don't understand why must we took this approach. I ended up just using Just(video player) and it will load subtitles instantly after chosing it. Just a side note, it is based on Exoplayer like what Jellyfin use. So yea, unsure why JF insists on preload/ extract embed subs in order to load it. I wouldn't call my library size very big, probably totaling less than 6TB, but dang it sure felt inconvenient having to analyze ALL media files without no user input
The only correct way to fix this is for the player to read the subtitle stream, which is already streamed to the end client in Jellyfin as previously confirmed. It's likely 20-30 lines of code as all player libraries already support this, and have for well over 25 years and is built-in to mpeg.
I agree with KyleSanderson, i also believe that it is more easier for Jellyfin developer to deal with this to leave the subtitles handled by the media player. No matter which player, as long as it is stable enough, it is good. I personally believe that MPV is the most stable player on Android in my experience, and VLC is also good on my phone (on TV it is impossible to use VLC as an external player). EXO is something I never used as a standalone player, so it is hard to say. But with EXO and the current settings of handling the subtitles, it is truly not that good. JMP on windows and mac are both working perfectly with MPV in my experience, that is the reason I would recommend MPV.
This is still an issue with the latest server version in docker, and latest player on Android TV. For me the subtitle loading is only by luck.
There are so many new features being worked on but why not fix this basic functionality issue?
Here are few reddit posts where users report regarding subtitles "unable to load subtitles". The other deluge of subtitle issues on Android tv can be found by simply searching "unable to load"
https://www.reddit.com/r/jellyfin/s/cNxyBEkE4e
https://www.reddit.com/r/jellyfin/s/jQpNeqSFYT
https://www.reddit.com/r/jellyfin/s/cANut48wL0
https://www.reddit.com/r/jellyfin/s/nQ9OAeDRHZ
https://www.reddit.com/r/jellyfin/s/JUhA4kjAIb
https://www.reddit.com/r/jellyfin/s/SnToue00SY
So kindly please let exoplayer handle the subtitles and not jellyfins custom implementation.
This is still an issue with the latest server version in docker, and latest player on Android TV. For me the subtitle loading is only by luck.
There are so many new features being worked on but why not fix this basic functionality issue?
Retracted.
EDIT: Sorry man; didn't realize it's a one man show now. Not posting again to add to the noise, but hope things pick up again when there's a bit more help.
Lotta people watch with subs because terrible mic positioning and sound editing.
Or simply watching a foreign show. This issue has plagued me for longer than I remember.
Switching to vlc external player works as expected so I'm not sure why this cant?
