4K Transcoding

[Animosity022 6]

I can see in the logs that this is transcoding but I'm not sure why.

 

Emby is telling me the Video Codec is not supported:

 

TranscodeReasons=VideoCodecNotSupported

 

Here is the mediainfo as well:

 

[felix@[member="Gemini"] logs]$ mediainfo "/gmedia/Movies/Blade.Runner.(1982)/Blade.Runner.1982.mp4"
General
Complete name                            : /gmedia/Movies/Blade.Runner.(1982)/Blade.Runner.1982.mp4
Format                                   : MPEG-4
Commercial name                          : HDR10
Format profile                           : Base Media
Codec ID                                 : isom (isom/iso2/mp41)
File size                                : 41.4 GiB
Duration                                 : 1 h 57 min
Overall bit rate                         : 50.4 Mb/s
Movie name                               : Blade Runner 1982 The Final Cut 4K
Writing application                      : Lavf58.12.100


Video
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Commercial name                          : HDR10
Format profile                           : Main 10@L5.1@High
Codec ID                                 : hev1
Codec ID/Info                            : High Efficiency Video Coding
Duration                                 : 1 h 57 min
Bit rate                                 : 50.0 Mb/s
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Variable
Frame rate                               : 23.976 (24000/1001) FPS
Minimum frame rate                       : 23.188 FPS
Maximum frame rate                       : 24.390 FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0 (Type 2)
Bit depth                                : 10 bits
Bits/(Pixel*Frame)                       : 0.251
Stream size                              : 41.0 GiB (99%)
Writing library                          : ATEME Titan File 3.8.3 (4.8.3.0)
Color range                              : Limited
Color primaries                          : BT.2020
Transfer characteristics                 : PQ
Matrix coefficients                      : BT.2020 non-constant
Menus                                    : 3
Mastering display color primaries        : Display P3
Mastering display luminance              : min: 0.0050 cd/m2, max: 4000 cd/m2
Maximum Content Light Level              : 1655 cd/m2
Maximum Frame-Average Light Level        : 117 cd/m2


Audio
ID                                       : 2
Format                                   : AC-3
Format/Info                              : Audio Coding 3
Codec ID                                 : ac-3
Duration                                 : 1 h 57 min
Bit rate mode                            : Constant
Bit rate                                 : 448 kb/s
Channel(s)                               : 6 channels
Channel positions                        : Front: L C R, Side: L R, LFE
Sampling rate                            : 48.0 kHz
Frame rate                               : 31.250 FPS (1536 SPF)
Bit depth                                : 16 bits
Compression mode                         : Lossy
Stream size                              : 377 MiB (1%)
Title                                    : TrueHD Atmos 7.1
Language                                 : English
Service kind                             : Complete Main
Default                                  : Yes
Alternate group                          : 1
Menus                                    : 3

ffmpeg-transcode-1172402a-1a9f-43cc-8c0d-02326f21811f.txt

Edited June 6, 2018 by Animosity022

[corey 315]

Apple TV is pretty limited in the formats it supports for 4K. In the media info above it says the codec ID is hev1 but the one Apple supports I believe is either hvc or hvc1. There’s a few other threads where folks have reported the same thing.

 

With that said we’ll be bringing a new player to the app and hopefully this won’t be a problem any longer.

[Everbrave 62]

Apple TV is pretty limited in the formats it supports for 4K. In the media info above it says the codec ID is hev1 but the one Apple supports I believe is either hvc or hvc1. There’s a few other threads where folks have reported the same thing.

With that said we’ll be bringing a new player to the app and hopefully this won’t be a problem any longer.

Any ETA for the new (mpv based?) player?

 

In fact, the limitations of Apple native player make both Plex and Emby clients on ATV almost useless without Transcoding especially for HEVC which in fact supported by iOS but only in one flavor.

Edited June 8, 2018 by Everbrave

[corey 315]

Any ETA for the new (mpv based?) player?

 

No ETA yet. We are working on it though.

[Everbrave 62]

No ETA yet. We are working on it though.

If you have a TestFlight, I would be glad to help testing.

 

Thanks

[corey 315]

@@ebr can reach out to you. We can always use more beta testers but we ask that you run the app through it’s paces for each beta release.

[Everbrave 62]

@@ebr can reach out to you. We can always use more beta testers but we ask that you run the app through it’s paces for each beta release.

As a Univ. Developer and Beta tester for other three major tvOS/iOS player apps, I’m used to that

[ebr 15580]

If you wish to join the Emby testflight for Apple TV, PM me your Apple ID.  However, we do not yet have a testflight version with the new player (hopefully soon though).

[ginsengbomb 5]

I just started trying to use Emby again (I like that Emby sync to Google Drive works whereas Plex's...doesn't at all work) and am seeing that 100% of my 4K/HDR videos transcode on AppleTV. They seem to all be HEVC. Am I right in determining from this thread that this is expected and that the new player should resolve it? 

 

(Because of this issue right now I'm basically using Emby to just do automated cloud sync to Google Drive and doing all my local/LAN viewing on Plex since it handles the same files fine w/ HDR)

[Luke 39662]

Hi, can we please look at an example? Thanks

[ginsengbomb 5]

Sure, here are a couple. They're both showing this in the stream mapping section: "  Stream #0:0 -> #0:0 (hevc (native) -> h264 (h264_nvenc)) ". Plex plays both of these fine with HDR on my AppleTV 4k, Emby transcodes.

 

I haven't tested Emby recently on another box but I'm pretty sure when I played these files on my old Roku, Emby direct streamed it (i.e. converted the container w/o touching the actual video) rather than transcoding.

log1.txt

log2.txt

[Luke 39662]

Ok thanks. In the beta version of the app we're testing a new video player and I think these will play better now. Thanks.

[ginsengbomb 5]

Awesome. Thank you Luke. I'm looking forward to it, and appreciate as always the fact that you guys actually respond to community questions and concerns!

[Luke 39662]

Thanks for the feedback.

[Sizzlebox 2]

Has the tvOS update arrived? I don’t see it yet...

[Luke 39662]

We are still working on it, thanks.