Emby Server - Roku - 100% CPU

[centuryx476 9]

Hello,

I' am trying to figure out why when I playback any video on my roku devices. The server jumps to 100% CPU.

The file types is a standard .MKV file (10Mb bitrate) 1080p video.

 

This only happens when i am playing back on a Roku device.

When I do a playback on my android phone, the CPU stays at a normal 5% to 10% usage which is normal.

 

I do not want to attach any server logs here due to it having a lot of internal information that I do not want shared....

 

Facts:

Latest version of Emby Server

This is happening on the dedicated emby windows VM.

As a test I installed Emby on my workstation and getting the same results( i9 9900K)

 

I do not know why this is happening.

 

Thank You

[Happy2Play 9785]

Is this wired or wireless?  But sounds like server is transcoding the media being delivered to the Roku.

 

Have you tried adjusting the in app quality?

[Luke 42086]

 

 

But sounds like server is transcoding the media being delivered to the Roku.

 

Exactly. The roku doesn't support the media you're playing, therefore it has to be converted on the fly. Does this answer your question?

[centuryx476 9]

Hello,

Roku does support .MKV I believe

https://developer.roku.com/docs/specs/streaming.md

 

From the Page

• MKV, WebM

  • supported video codecs: AVC, HEVC, VP8, VP9
  • supported audio codecs: AAC, AC3, EAC3, Dolby Atmos, ALAC, DTS, DTSE, FLAC, MP3, OPUS, PCM, VORBIS

Example File Info I have pulled using MediaInfo:

1 Video Stream: AVC

1 audio Stream: AAC LC

[centuryx476 9]

Hello,

I switched from .MKV to .M4v and the 100% CPU usage went away. In fact it is now hovering at around 3% usage which is "Normal"

There is something within the Roku that is not liking the .MKV container.

 

GO ahead and close out

 

Thank You

[Happy2Play 9785]

Hello,

Roku does support .MKV I believe

https://developer.roku.com/docs/specs/streaming.md

 

From the Page

• MKV, WebM

  • supported video codecs: AVC, HEVC, VP8, VP9
  • supported audio codecs: AAC, AC3, EAC3, Dolby Atmos, ALAC, DTS, DTSE, FLAC, MP3, OPUS, PCM, VORBIS

Example File Info I have pulled using MediaInfo:

1 Video Stream: AVC

1 audio Stream: AAC LC

 

 

Hello,

I switched from .MKV to .M4v and the 100% CPU usage went away. In fact it is now hovering at around 3% usage which is "Normal"

There is something within the Roku that is not liking the .MKV container.

 

GO ahead and close out

 

Thank You

 

You need to provide the server log and the ffmpeg log for the mkv that is playing.  Also have you checked the dashboard and/or the in app nerd stats to show you why it may be transcoding?