Everything on 55KU6400 gots transcodes in terrible quality

[TheVMaster 1]

Just bought a new Samsung 55KU6400U TV and I have two questions. For years I've been a Plex user, but the Plex App has a bit of an issue with high bitrate 4K movies (on the Samsung TV). On their forums a few people were talking about Emby and that this app was able to play 4K movies without transcoding (and therefore playing in high quality).

 

1. Why isn't the Emby app not available in Europe (or the Netherlands) at this moment? Yes, I can switch to the US Store (dit that at this moment), but now I mis all the Dutch local apps.
2. Why are all my movies transcoding? The movies are playing just fine without transcoding when using Plex. Even the 1080p movies are transcoding (and the quality is terrible). The TV supports all the formats I'm playing and when using a usb stick to play the movie, the movie just plays fine.  The issue is solved. In the settings of the player I did not select the correct 'Maximum bitrate', so it started transcoding with every movie.....this seems fixed now. 

 

I searched the forum, but really couldn't find a proper answer to both of my questions. Hope that anybody can help me find some answers. 

 

Can anybody please fix the title? It should say Everything on 55KU6400 gets transcoded in terrible quality

Edited April 2, 2017 by TheVMaster

[Luke 37125]

So the only question left is the store, and the answer is that we are working on it.

[TheVMaster 1]

So the only question left is the store, and the answer is that we are working on it.

Thanks for the answer. I do have another issue playing UHD movies with Emby on my Samsung TV. It looks like movies with a bitrate higher then 20-30 Mbit just stutter, but this also happens with Plex. 

[SamES 891]

Is the stuttering during DirectPlay or transcoding?

 

I would expect this is either a server cpu/load issue or network speed

[TheVMaster 1]

Is the stuttering during DirectPlay or transcoding?

 

I would expect this is either a server cpu/load issue or network speed

 

That's what i was thinking. It is during DirectPlay. My Emby server is a VM (just like my Plex Server) and VHD's are stored on SSDs the network is Gbit, except for my TV (it has a 100Mbit nic ). 

 

I just tested a 2160p movie and the stream reaches 85Mbit at max (on the Emby server), but the movie stops every 30-60 seconds (just for a second) and the loading circle shows up. After a sec or 2 the movie continues.

Edited April 2, 2017 by TheVMaster

[Happy2Play 8307]

Can you show the media info for one of these videos.  Looks like the are bitrate limitations depending on the codecs.

 

http://www.samsung.com/us/support/answer/ANS00049184/

Edited April 2, 2017 by Happy2Play

[TheVMaster 1]

General

Complete name                            : \The Revenant (2015) - 2160p.mkv

Format                                   : Matroska

Format version                           : Version 4 / Version 2

File size                                : 70.5 GiB

Duration                                 : 2 h 36 min

Overall bit rate                         : 64.6 Mb/s

Encoded date                             : UTC 2017-01-31 03:02:04

Writing application                      : mkvmerge v9.7.1 ('Pandemonium') 64bit

Writing library                          : libebml v1.3.4 + libmatroska v1.4.5

 

Video

ID                                       : 1

Format                                   : HEVC

Format/Info                              : High Efficiency Video Coding

Format profile                           : Main 10@L5.1@High

Codec ID                                 : V_MPEGH/ISO/HEVC

Duration                                 : 2 h 36 min

Bit rate                                 : 60.0 Mb/s

Width                                    : 3 840 pixels

Height                                   : 2 160 pixels

Display aspect ratio                     : 16:9

Frame rate mode                          : Constant

Frame rate                               : 23.976 (24000/1001) FPS

Color space                              : YUV

Chroma subsampling                       : 4:2:0

Bit depth                                : 10 bits

Bits/(Pixel*Frame)                       : 0.302

Stream size                              : 65.5 GiB (93%)

Writing library                          : x265 2.0+18-b0ec268aef60:[Windows][GCC 6.1.0][64 bit] 10bit

Encoding settings                        : wpp / ctu=64 / min-cu-size=8 / max-tu-size=32 / tu-intra-depth=1 / tu-inter-depth=1 / me=1 / subme=2 / merange=57 / no-rect / no-amp / max-merge=2 / temporal-mvp / no-early-skip / rskip / rdpenalty=0 / no-tskip / no-tskip-fast / strong-intra-smoothing / no-lossless / no-cu-lossless / no-constrained-intra / no-fast-intra / open-gop / no-temporal-layers / interlace=0 / keyint=250 / min-keyint=23 / scenecut=40 / rc-lookahead=20 / lookahead-slices=8 / bframes=4 / bframe-bias=0 / b-adapt=2 / ref=3 / limit-refs=3 / no-limit-modes / weightp / no-weightb / aq-mode=1 / qg-size=32 / aq-strength=1.00 / cbqpoffs=0 / crqpoffs=0 / rd=3 / psy-rd=2.00 / rdoq-level=0 / psy-rdoq=0.00 / log2-max-poc-lsb=8 / no-rd-refine / signhide / deblock=0:0 / sao / no-sao-non-deblock / b-pyramid / cutree / no-intra-refresh / rc=abr / bitrate=61000 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv-maxrate=160000 / vbv-bufsize=160000 / ipratio=1.40 / pbratio=1.30

Default                                  : Yes

Forced                                   : No

Color range                              : Limited

Color primaries                          : BT.2020

Transfer characteristics                 : SMPTE ST 2084

Matrix coefficients                      : BT.2020 non-constant

Mastering display color primaries        : R: x=0.680000 y=0.320000, G: x=0.265000 y=0.690000, B: x=0.150000 y=0.060000, White point: x=0.312700 y=0.329000

Mastering display luminance              : min: 0.0001 cd/m2, max: 1000.0000 cd/m2

Maximum Content Light Level              : 1000 cd/m2

Maximum Frame-Average Light Level        : 500 cd/m2

 

Audio

ID                                       : 2

Format                                   : DTS

Format/Info                              : Digital Theater Systems

Format profile                           : MA / Core

Mode                                     : 16

Format settings, Endianness              : Big

Codec ID                                 : A_DTS

Duration                                 : 2 h 36 min

Bit rate mode                            : Variable / Constant

Bit rate                                 : 4 602 kb/s / 1 509 kb/s

Channel(s)                               : 8 channels / 6 channels

Channel positions                        : Front: L C R, Side: L R, Back: L R, LFE / Front: L C R, Side: L R, LFE

Sampling rate                            : 48.0 kHz

Frame rate                               : 93.750 FPS (512 spf)

Bit depth                                : 24 bits

Compression mode                         : Lossless / Lossy

Delay relative to video                  : 10 ms

Stream size                              : 5.03 GiB (7%)

Title                                    : DTS-HD

Language                                 : English

Default                                  : Yes

Forced                                   : Yes

 

Text

ID                                       : 3

Format                                   : UTF-8

Codec ID                                 : S_TEXT/UTF8

Codec ID/Info                            : UTF-8 Plain Text

Duration                                 : 2 h 20 min

Bit rate                                 : 22 b/s

Count of elements                        : 818

Stream size                              : 23.5 KiB (0%)

Language                                 : Dutch

Default                                  : Yes

Forced                                   : No

[Happy2Play 8307]

Just a guess but the document only show 60 FPS for UHD HEVC.

Frame rate: 23.976 (24000/1001) FPS

So in theory it should be transcoded. Edited April 2, 2017 by Happy2Play

[TheVMaster 1]

Just a guess but the document only show 60 FPS for UHD HEVC.

Frame rate: 23.976 (24000/1001) FPS

So in theory it should be transcoded.

 

 

I understand what you mean, but I personally think that's the maximum frame rate. But it is not transcoding, but doing Direct Play...the CPU (of the Emby box) is also almost sleeping...

[Happy2Play 8307]

Unless you can find better documentation, that document I would say is limitations.

 

Look at H264 it lists 30 and 60 fps but not for HEVC.

 

*That table is a little deceiving also since it doesn't list H264 in the 1920x1080 section either (unless the whole column applies).

[FrostByte 5053]

I understand what you mean, but I personally think that's the maximum frame rate.

 

Correct, those are maximum or limitations allowed for both FPS and Mbps

 

http://developer.samsung.com/tv/develop/specifications/tv-model-lineup/2016-tv-media-specifications

[TheVMaster 1]

Correct, those are maximum or limitations allowed for both FPS and Mbps

 

http://developer.samsung.com/tv/develop/specifications/tv-model-lineup/2016-tv-media-specifications

 

That's what I thought, since at the resolution it is mentioning : 4096x2160 (and that is not the 'normal' 4k resolution of the movies : 3840 x 2160

[Happy2Play 8307]

@@FrostByte

 

That table is easier to read

 

So would HEVC 3840x2160 30 80 applies to post 7?  If so then there shouldn't be any issues if I am read this table correctly.

[TheVMaster 1]

All the 4K movies I own are 23.* fps. But the format profile differs (and the bitrate). This one has a profile of 6.1...very strange.

 

General

Unique ID                                : 175200471181790966579062388669995818540 (0x83CE6224AA74EC98B29A3D3E76081E2C)

Complete name                            : \Sully (2016)\Sully (2016) - 2160p.mkv

Format                                   : Matroska

Format version                           : Version 4 / Version 2

File size                                : 47.5 GiB

Duration                                 : 1 h 35 min

Overall bit rate mode                    : Variable

Overall bit rate                         : 70.9 Mb/s

Movie name                               : 

Encoded date                             : UTC 2017-01-12 20:01:40 / UTC 2016-12-23T23:50:20Z

Writing application                      : mkvmerge v9.7.1 ('Pandemonium') 64bit

Writing library                          : libebml v1.3.4 + libmatroska v1.4.5 / Lavf56.1.0

Attachments                              : RWA Release.jpg

 

Video

ID                                       : 1

Format                                   : HEVC

Format/Info                              : High Efficiency Video Coding

Format profile                           : Main 10@L6.1@Main

Codec ID                                 : V_MPEGH/ISO/HEVC

Duration                                 : 1 h 35 min

Width                                    : 3 840 pixels

Height                                   : 2 160 pixels

Display aspect ratio                     : 16:9

Frame rate mode                          : Constant

Frame rate                               : 23.976 (24000/1001) FPS

Color space                              : YUV

Chroma subsampling                       : 4:2:0

Bit depth                                : 10 bits

Title                                    : RWA RELEASE

Writing library                          : x265 1.9+3-63308f7658c3:[Windows][GCC 5.2.0][64 bit] 10bit

Encoding settings                        : wpp / ctu=64 / min-cu-size=8 / max-tu-size=32 / tu-intra-depth=1 / tu-inter-depth=1 / me=1 / subme=2 / merange=57 / no-rect / no-amp / max-merge=2 / temporal-mvp / no-early-skip / rdpenalty=0 / no-tskip / no-tskip-fast / strong-intra-smoothing / no-lossless / no-cu-lossless / no-constrained-intra / no-fast-intra / open-gop / no-temporal-layers / interlace=0 / keyint=240 / min-keyint=24 / scenecut=40 / rc-lookahead=20 / lookahead-slices=8 / bframes=4 / bframe-bias=0 / b-adapt=2 / ref=3 / limit-refs=3 / no-limit-modes / weightp / no-weightb / aq-mode=1 / qg-size=32 / aq-strength=1.00 / cbqpoffs=0 / crqpoffs=0 / rd=3 / psy-rd=2.00 / rdoq-level=0 / psy-rdoq=0.00 / signhide / deblock / sao / no-sao-non-deblock / b-pyramid / cutree / no-intra-refresh / rc=abr / bitrate=61000 / qcomp=0.60 / qpmin=0 / qpmax=51 / qpstep=4 / ipratio=1.40 / pbratio=1.30

Default                                  : Yes

Forced                                   : No

Color range                              : Limited

Color primaries                          : BT.709

Transfer characteristics                 : BT.709

Matrix coefficients                      : BT.601

Statistics Tags Issue                    : mkvmerge v9.7.1 ('Pandemonium') 64bit 2017-01-12 20:01:40 / mkvmerge v9.7.1 ('Pandemonium') 64bit 2017-01-12 20:01:40 / UTC 2016-12-23T23:50:20Z

FromStats_BitRate                        : 58383749

FromStats_Duration                       : 01:35:51.329000000

FromStats_FrameCount                     : 137894

FromStats_StreamSize                     : 41973018784

Edited April 2, 2017 by TheVMaster

[FrostByte 5053]

Unless you can find better documentation, that document I would say is limitations.

 

Look at H264 it lists 30 and 60 fps but not for HEVC.

 

*That table is a little deceiving also since it doesn't list H264 in the 1920x1080 section either (unless the whole column applies).

 

You are looking at the wrong table for his TV   He has a 16TV_PREMIUM group tv

 

http://developer.samsung.com/tv/develop/specifications/tv-model-lineup

 

 

This link has tables for all 2016 sets

 

http://developer.samsung.com/tv/develop/specifications/tv-model-lineup/2016-tv-media-specifications

[FrostByte 5053]

 

All the 4K movies I own are 23.* fps. But the format profile differs (and the bitrate). This one has a profile of 6.1...very strange.

 

 

Yes, profile is only supported up to 5.1 for H265 UHD

 

 

Video Decoder

• H.264 FHD : Level 4.1 supported (FMO/ASO/RS are not supported)

• H.264 UHD : Level 5.1 supported

• HEVC FHD : Level 4.1 supported

• HEVC UHD : Level 5.1 supported

• VC1 AP L4 is not supported

• Except WMVv7, v8, MSMPEG4 v3, MVC, VP6 :

  • Below 1280 x 720: 60 frame max

  • Above 1280 x 720: 30 frame max

• GMC 2 or higher are not supported

• SVAF Top/Bottom, Side by Side, Left/Right view sequence type(2 ES) are supported

• Only BD MVC Spec is supported

Edited April 2, 2017 by FrostByte

[TheVMaster 1]

@@FrostByte

 

That table is easier to read

 

So would HEVC 3840x2160 30 80 applies to post 7?  If so then there shouldn't be any issues if I am read this table correctly.

 

That's exactly what I thought...but the movie (and others) play fine for a couple of minutes...and then we see a 1-2 second pause (the 'loading' circle shows) and then the movie continues...

[FrostByte 5053]

I'm not sure what the code is set at as it's not on GitHub that I know and I don't have any UHD files to test..  At one time the app was set to a max 60 Mbps even for UHD though I thought Luke said they were upping it to at least 80 for UHD to match the chart.    Lots of other things as you know can figure into that also (network, server, etc). 

 

Your Level 6.1 file is an issue if the code is checking for Level.  I know the old Orsay app transcodes because of Level being too high

[SamES 891]

I think max is now up around 100Mb/s or 120Mb/s for UHD Tizen models

[TheVMaster 1]

I think max is now up around 100Mb/s or 120Mb/s for UHD Tizen models

 

Interesting, but that doesn't explain why my movies stutter every couple of minutes.

[Happy2Play 8307]

You may have to post a server log and one of the gurus around here may be able to see something.  But is sounds like it may be a network issue.

[TheVMaster 1]

Here are my logs.

Emby.zip

[SamES 891]

I'm sorry,I don't see any problem in the logs.  It looks to be DirectPlaying.  I would say if you are having buffering issues it can only be server speed, disk speed or network.

 

You would need describe your setup in a bit more detail.  I notice from the log your system is reporting a single processor.  What hardware do you have in your server?  (CPU, disk types, memory, are the movies local or on another machine, what disks are they on?)

[TheVMaster 1]

I'm sorry,I don't see any problem in the logs.  It looks to be DirectPlaying.  I would say if you are having buffering issues it can only be server speed, disk speed or network.

 

You would need describe your setup in a bit more detail.  I notice from the log your system is reporting a single processor.  What hardware do you have in your server?  (CPU, disk types, memory, are the movies local or on another machine, what disks are they on?)

 

Emby is running on a virtual machine (on my Hyper-V host), just like the Plex machine. I upgraded the processor yesterday to a six processor VM

 

 

Operating system: Microsoft Windows NT 6.2.9200.0

64-Bit OS: True

64-Bit Process: True

Processor count: 6

 

The Emby machine is running from an SSD with 6 vCPU's and 4 GB of RAM. The movies are located on my fileserver (another VM on the same physical box). The disks are also Virtual Disks located on 7 different HDDs. The throughput of the network is 1Gbit. I'm using a 1Gbit Ubiquiti (professional) switch. The TV only supports 100Mbit, so that's the only 100Mbit connection in my network.

 

If I start a UHD movie the CPU of the Emby server stays low (around 10-20% utilization) and the network througput is around 50-85Mbit (depending on the movie and bitrate). 

Edited April 3, 2017 by TheVMaster

[SamES 891]

This concerns me a little

          The disks are also Virtual Disks located on 7 different HDDs

 

 

 

So is this a RAID array of virtual disks, or just lots of individual virtual disks (like JBOD)?  Are they all physically located on an SSD as well, or spinning disks?  I'm concerned disk read throughput or I/O throughput might be an issue.

 

What is the actual server processor that this vm is running on?