Can't play certain 4K tv shows/movies on Emby on multiple devices

[Rorazemby 1]

I'm trying to play certain 4K movies and tv shows my Synology Emby server onto multiple devices (have tried my Samsung smart tv, tablet and browser on my computer) however they don't play. When I try playing them through my browser, I eventually get the error message 'No compatible streams are currently available. Please try again later or contact your system administrator for details.'

I have other 4K shows and films that play fine though, so I'm thinking it might be a codec issue (?).

I've tried my best to self diagnose the issue through the forums but nothing I've found seems to fix the issue, so any help would greatly be appreciated!

My setup:

Synology DS218+ / DSM 6.2.4-25556 Update 7

EMBY Version 4.8.8.0

Emby and transcode logs attached, from right after I tried to play one of the movies that doesn't play. I can play the movie through VLC on my computer directly through my network connection.

ffmpeg-transcode-3bd9ea06-36bf-4deb-a22d-ea819719e573_1.txt ffmpeg-transcode-d685b5ab-7f30-4dd7-9ae6-68d0f55b1eae_1 (1).txt ffmpeg-transcode-d685b5ab-7f30-4dd7-9ae6-68d0f55b1eae_1.txt ffmpeg-transcode-fa924a67-697e-4f6d-90f1-f2d1021afa3e_1.txt embyserver.txt ffmpeg-transcode-9a5e008b-dc64-4fdc-ad17-ec10f2ee7c6e_1.txt

[GrimReaper 4740]

Quote

&TranscodeReasons=SubtitleCodecNotSupported

Burning-in graphical subs is very CPU-intensive process, even for modern-day CPUs. Your server machine is underpowered for such task/cannot keep up. 

Quote

18:16:04.674 elapsed=00:00:01.26 frame=    3 fps=2.4 q=0.0 size=       0kB time=00:00:00.19 bitrate=   0.0kbits/s throttle=off speed=0.152x    
18:16:05.579 elapsed=00:00:02.17 frame=    5 fps=2.3 q=-0.0 size=      29kB time=00:00:00.19 bitrate=1245.5kbits/s throttle=off speed=0.0883x    
18:16:06.474 elapsed=00:00:03.08 frame=    7 fps=2.3 q=-0.0 size=      38kB time=00:00:00.19 bitrate=1629.3kbits/s throttle=off speed=0.0623x    
18:16:07.328 elapsed=00:00:03.93 frame=    9 fps=2.3 q=-0.0 size=      62kB time=00:00:00.44 bitrate=1131.4kbits/s throttle=off speed=0.114x    
18:16:08.213 elapsed=00:00:04.79 frame=   11 fps=2.3 q=-0.0 size=     112kB time=00:00:00.44 bitrate=2047.9kbits/s throttle=off speed=0.0934x    
18:16:09.050 elapsed=00:00:05.67 frame=   13 fps=2.3 q=-0.0 size=     123kB time=00:00:00.44 bitrate=2256.0kbits/s throttle=off speed=0.079x

For real time transcoding, as absolute minimum speed should be >1.0x (or roughly 10 times your current server performance).

Try playing that item without subtitles selected or obtain external text-based subs.

[Luke 42078]

@Rorazembyhas this helped?

[Rorazemby 1]

turning off subtitles has reduced the stress definitely allowing a couple more videos to play. I think @GrimReaperis right and my nas just cant process files like that

[Luke 42078]

1 hour ago, Rorazemby said:

turning off subtitles has reduced the stress definitely allowing a couple more videos to play. I think @GrimReaperis right and my nas just cant process files like that

One way to help mitigate this is to play using an installed Emby app such as Android, iOS or windows. These can generally direct play those subtitles without transcoding whereas the browser cannot.