Subtitles and audio out of sync since the last Samsung Plex update

Server Version#: 1.29.0.6244
Player Version#: 5.47.1

I have a Samsung Smart TV from 2017 with Tizen 3.0. Since the latest Samsung Plex 5.47.1 update I have had lots of issues when using .srt subtitles. The video will randomly show weird colors/corruption and then skip a few seconds, causing the subtitles to get out of sync. This is on known good media files which worked just fine before the 5.47.1 update. Sometimes the audio track is also affected and will lose sync. I have found that the only solution is to turn off subtitles. Does anyone else have similar issues since the latest update?

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Me too, uninstalling and reinstalling the TV app seemed to work for a couple of days but it’s back at it again now. Shows that played fine before are now glitchy and OOS when direct played/streamed. Turning those two off seems to work as does lowering the local playback quality, presumably because either results in the media being transcoded. Hopefully the next update to the tv/server app will fix it. :crossed_fingers:

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I’m also seeing this issue, sometimes there’s a video glitch, some other it’s only an audio glitch, but both issues results in the audio, video and subtitles to become out of sync.
Stopping and starting the video playback seems to fix the issue for several minutes but it then happens again and again. I’ve done this workaround more than 10 times in a 1h video.

Edit: continued looking at the forum, this issue seems the same as Audio desync after some playback - #9 by dinojanevski

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This might be related to the issue where Samsung TVs have problems when a video file has many subtitle streams. It seems it can be solved by using ffmpeg to manually make a copy of the video without those streams.

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I’ve had to do that for files in the past although I use mkvmerge to accomplish the same thing, just leaving the video, main audio and any forced/default English subtitle stream but this was happening with files I knew to be working until very recently.

Seems to be ok for me again now, no server side update although the TV app might have had one, I’m not sure. :crossed_fingers::crossed_fingers::crossed_fingers:

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Still have the same issue here, so hoping a future Plex update for Samsung will fix this. In my case it is not related to the number of subtitle streams. My temporary solution is to just don’t use .srt subtitles, since my NAS box is not powerful enough for transcoding at an acceptable quality. The direct stream will then play like it should with no issues.

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Hi. Same issue here since last update. Samsung Tizen 2017.

Lets be clear this issue didnt happened before. SRT and audio was working ok

Description of the issue: Audio unsyncs from subtitles and it randomly desyncs from video aswell. This happens always when buffering is happening or when the video glitches.

Temporary solution is to go back 1 minute and then it resyncs again but obviously this is a bad solution

I don’t wanna be harsh but you always manage to break things when everything is working perfectly fine. You solve minor bugs but introduce large one in the process. The Plex app forces the updates so us users are left stranded. Its very annoying specially because the app has been working fine for my Tizen since the last 3 years or so. So you randomly get this updates that break everything and it’s very frustrating

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+1 I’ve got the same subtitles problem, alongside the app being super laggy now.

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+1 on this, on two Samsung TVs. Disabling subs stops all the issues but with subs I lose audio sync, glitches in playback and sometimes playback error. Logs seems to show a 500 error related to the subtitle server, but I don’t know if this is related. Seems to only affect media where there are 30+ embedded subs in the file itself.

Also forcing transcode fixes this too, but direct stream (due to 30+ streams) always has these issues.

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In my case it also happens when media has just a couple of subs

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Spoke too soon, turns out the issue only affects files with subtitles, I’m an English speaker so had only noticed the issue when watching files with forced subs for English dialogue, so still happening for me as of now, have to set burn subtitles to always and force transcoding which won’t be an option for many on underpowered server machines obviously. Either the server has changed the way it serves up text subtitles or the client app has forgotten how to properly interpret them. :man_shrugging:

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Same issue I thought it was the last server update but after reading your posts it’s definitely the Samsung TV App !

Devs please fix ASAP and get your team together , can’t be fixing small issues whilst introducing major ones !

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Same issue here, I have been pulling my hair out trying to figure out what was causing this.
I’m glad I found this thread. Could someone from the Plex team please respond, this is a really annoying bug you’ve introduced… :confused:

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same here. i thougt it might me my poor reciever fault but its absoultly clear that its samsung tv app issue. this thread is few days old and we still didnt get ANY response from the support team, very disappointing.

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same problem here… no news… tizen 3 plex 5.47.1

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There’s a new Samsung player version, 5.48.1, and now when you press Info while watching something, the ā€œ30 streams errorā€ is not present anymore, but the playback issues persist, with stuttering and pixelation as before.

Also my setting to ā€œAlways burn subtitlesā€ is set to Automatic again.

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Same problem i guess since a few weeks :

After 10 min of playback, video glitch/pixels appear during 1 or 2 sec, then audio is out of sync. Exiting and resuming playback corrects it for the next 5-10 minutes.

Had no problem with the same setup (Samsung TV) for 2 years or more.

And yes it was on files with subtitles, sometimes many subtitles on the file.

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new version 5.48.1 still the same problem

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everything played fine, then after the udpate i had audio lag/stuttering in some streams on my samsung TV. it was totally caused by mkvs with lots of subtitles - even if no subtitles were used. if i muxed it to just a few subtitles, everything played fine again. with or without using subtitles. what a mess.

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I found that in my case it only happens with files that need some kind of transcoding, in my case only confirmed when transcoding audio.

When files don’t need transcoding (for audio at least), the file is played without any stuttering or hickups or weird pixelation artifacts.

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