4K MP4 performs poorly on Windows Store Emby

[FordGT90Concept 63]

Plays fine via MPC-HC x64:

Video: MPEG4 Video (H264) 3840x2160 25fps 31397kbps [V: Alias Data Handler [eng] (h264 main L5.1, yuv420p, 3840x2160, 31397 kb/s)]

Audio: AAC 48000Hz stereo 317kbps [A: Alias Data Handler [eng] (aac lc, 48000 Hz, stereo, 317 kb/s)]

 

From website:

Media Info

Video

Codec H264

Codec tag avc1

AVC Yes

Profile Main

Level 51

Resolution 3840x2160

Aspect ratio 16:9

Anamorphic No

Interlaced No

Framerate 25

Bitrate 31397 kbps

Bit depth 8 bit

Pixel format yuv420p

Ref frames 3

NAL 4

 

Audio

Language eng

Codec AAC

Codec tag mp4a

Profile LC

Layout stereo

Channels 2 ch

Bitrate 317 kbps

Sample rate 48000 Hz

Default Yes

Title Eng AAC stereo Default

 

Container mp4

Path\\SERVER\Videos\Music\video_game_show_the_witcher_3_wild_hunt_concert_4K.mp4

 

 

It also does poorly via the website but it runs better though the website than Windows Store Emby.

Edited March 7, 2017 by FordGT90Concept

[Luke 38803]

Due to the level 51 video this will most likely be transcoding and I suspect the 4K transcode might be hard on your server. But server logs will help us verify that. thanks !

[FordGT90Concept 63]

It shouldn't be transcoding though. My computer has a R9 390 and R7 360. The network can handle 113 MB/s transfers. MPC-HC, I'm literally playing it over the network.

 

Bandwidth setting was set to Auto. Changed it to 4K 120 Mbps and it still skips.

 

MPC-HC, it is averaging about 60 Mbps of network traffic.

 

Both graphics cards are capable of handling the video through MPC-HC.

logs.zip

Edited March 7, 2017 by FordGT90Concept

[Luke 38803]

The windows store app is using the built in Windows video player and according to it's documentation it only accepts up to level 41. This is not a question of network bandwidth, it's a question of what the Windows video player supports.

 

You are probably better off with the traditional desktop app which has a more robust video player:

 

https://emby.media/emby-theater.html

[FordGT90Concept 63]

That fixed it. Is there a similar explanation for why it can't play smooth in browser (tried Microsoft Edge)?

Edited March 7, 2017 by FordGT90Concept

[Luke 38803]

We are also limiting Edge to level 41 based on it's documentation. So yes, same explanation. For chrome we allow up to 51 though.

[Luke 38803]

I just did some new testing with Edge and I have some level 51 content that is playing OK so we'll go ahead and enable that for the next release. thanks.

[FordGT90Concept 63]

Updated Emby Server to 3.2.7.0 and it's not only fixed in Edge but also the Windows Store app. They likely use the same infrastructure for playing back MPEG4 videos.

[Luke 38803]

Yes I think the Edge video player is the system video player which the store app also uses.