Emby Sometimes Plays A Section Of Video Twice

[Bob1969 8]

Emby app - 2.3.5

Emby Server - 4.9.3.0

Hey guys this is an ongoing problem for me, i might play a movie and a section of the movie plays twice. Ending tonight around 21.44 on  01/05/26,  i was playing a video called Leonard Cohen Live at the Isle of White. It got to the very end and then jumped back and played the credits again. I have seen it happen other times where 10 minutes into a movie it shows a bit i already watched again. Any ideas what it could be?  

embyserver.txt

[Luke 42462]

Hi, please attach the ffmpeg log as well. thanks.

[Bob1969 8]

6 hours ago, Luke said:

Hi, please attach the ffmpeg log as well. thanks.

hi i have included the logs you asked for 

ffmpeg-remux-905af747-351f-4a9c-ae55-834648873078_1.txt ffmpeg-remux-e85f25cb-f16e-4320-85f6-50c7e066c564_1.txt

[Bob1969 8]

hi guys did we get a chance to look at my logs?

[Bob1969 8]

@LukeHi mate is there any updates on this? many thanks

[visproduction 356]

There are about 6 subtitles and subtitle_kickoff in the first log appears 1321 times.  That seems excessive and may be part of the issue.

Also some alert error for DTS in the second log.  DTS seems to often be difficult to transcode.
 

Quote

21:36:58.843 [segment @ 00000219ede7d100] Non-monotonous DTS in output stream 0:0; previous: 330966631, current: 330963660; changing to 330966632. This may result in incorrect timestamps in the output file.
 

 

Edited Wednesday at 04:37 PM by visproduction

[Bob1969 8]

On 20/05/2026 at 17:36, visproduction said:

There are about 6 subtitles and subtitle_kickoff in the first log appears 1321 times.  That seems excessive and may be part of the issue.

Also some alert error for DTS in the second log.  DTS seems to often be difficult to transcode.
 

 

Many thanks for your reply. Is there anything i can do to prevent it happening in future? I dont understand why the subtitles are showing up in the log so many times. 

[visproduction 356]

Bob,  

There are 6 different subtitles, so that number is correct.  The question is there some corrupted data in your media from an inproper edit or non-valid damaged data?  Quite often, a video can appear normal with some 3rd party player that automatically smooths out errors while players in a TV App or browser are not as sophisticated and cannot fix such errors during playback. 

You can try checking if the media is damaged by running a quality test / probe.  You can also remux the media, which often fixes problems so that the new copy doesn't have the same errors.  You can also get a quality test video, made perfectly with mutiple subtitles and see if that plays back correctly. All these can point to the media having the problem.  If the software is the problem, then every test would still get your error.  Since no one else experiences your problem, it does seem to point to your media has bad data.

I think a lot of people play the media back in a more advanced player, which fixes issues and use that as proof, that the media is fine.  But that is not a proper test.  

I've seen a lot of issues with DTS media that might mean that transcoding from DTS runs into many issues.  I don't ever deal with DTS, so perhaps someone else can comment.

Hope that makes sense.

Edited 20 hours ago by visproduction