Clayzee 4 Posted April 25, 2023 Share Posted April 25, 2023 Hello I currently have an issue with HDR / Dolby Vision videos that I cannot really understand, and for which I'm seeking some help Current Emby setup Emby server installed on Synology NAS ( DSM7 ) Emby client installed on an Apple TV 4K ( latest gen ) Transcoding is disabled ( Direct Play only ) The HDR problem Attempting to play mkv movies or TV shows with embedded HDR works, but... the TV detects no HDR signal during the playback ( while HDR signal IS correctly detected when displaying the main Apple TV interface ) The Dolby Vision problem Attemting to play mkv videos with a Dolby Vision encoded track works, but ... the screen remains black ( while the audio plays fine ) From what I read here and there, the DV issue could be resolved by switching the video container from mkv to mp4 : is that assumption correct or is there another setting I should look at ? Regarding the HDR signal not being detected by the TV, a couple of posts reported similar issues, but these were supposedly fixed with the latest Emby ATV upgrade ( which is installed), so...I'm a bit confused about what's wrong here Any help clues are welcome ! Link to comment Share on other sites More sharing options...
Luke 37066 Posted May 1, 2023 Share Posted May 1, 2023 @Clayzee Hi there, let's look at an example. Please attach the information requested in how to report a media playback issue. Thanks! Link to comment Share on other sites More sharing options...
kalg 4 Posted May 1, 2023 Share Posted May 1, 2023 Sorry too say that emby client dosn't do hdr passthrough with .mkv files you have to use either plex or infuse or channels dvr (all extra pay methods thou) Link to comment Share on other sites More sharing options...
hstamas 153 Posted May 1, 2023 Share Posted May 1, 2023 You can also convert your MKV movie container to MP4/MPV cant you? Link to comment Share on other sites More sharing options...
Clayzee 4 Posted May 2, 2023 Author Share Posted May 2, 2023 On 5/1/2023 at 3:49 AM, Luke said: @Clayzee Hi there, let's look at an example. Please attach the information requested in how to report a media playback issue. Thanks! Hello, thanks for replying Here are the latest technical details of the tests I've conducted after reading the Emby ATV WIKI Media file(s) Episodes from the TV-show "Prehistoric Planet", each in MP4 containers mediainfo of one of these : General Complete name : ***share=video/tv-shows/Prehistoric Planet ( 2022 )/S01E01 Coasts.mp4 Format : MPEG-4 Format profile : Base Media / Version 2 Codec ID : mp42 (isom/mp42/dby1) File size : 7.28 GiB Duration : 42 min 3 s Overall bit rate mode : Variable Overall bit rate : 24.8 Mb/s Encoded date : UTC 2022-05-23 08:48:58 Tagged date : UTC 2022-05-23 08:48:58 Video ID : 1 Format : HEVC Format/Info : High Efficiency Video Coding Format profile : Main 10@L5@High HDR format : Dolby Vision, Version 1.0, dvhe.05.06, BL+RPU Codec ID : dvhe Codec ID/Info : High Efficiency Video Coding with Dolby Vision Duration : 42 min 3 s Bit rate : 24.0 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) : 0.121 Stream size : 7.06 GiB (97%) Default : Yes Alternate group : 1 Encoded date : UTC 2022-05-23 08:48:38 Tagged date : UTC 2022-05-23 08:49:09 Codec configuration box : hvcC+dvcC Audio ID : 2 Format : E-AC-3 JOC Format/Info : Enhanced AC-3 with Joint Object Coding Commercial name : Dolby Digital Plus with Dolby Atmos Codec ID : ec-3 Duration : 42 min 3 s Bit rate mode : Constant Bit rate : 768 kb/s Maximum bit rate : 811 kb/s Channel(s) : 6 channels Channel layout : L R C LFE Ls Rs Sampling rate : 48.0 kHz Frame rate : 31.250 FPS (1536 SPF) Compression mode : Lossy Stream size : 231 MiB (3%) Title : English Language : English Service kind : Complete Main Default : Yes Alternate group : 1 Tagged date : UTC 2022-05-23 08:49:09 Complexity index : Not present / 16 Number of dynamic objects : 15 Bed channel count : 1 channel Bed channel configuration : LFE Text #1 ID : 3 Format : Timed Text Codec ID : tx3g Duration : 40 min 26 s Bit rate mode : Variable Bit rate : 43 b/s Stream size : 12.8 KiB (0%) Title : English Language : English Forced : No Encoded date : UTC 2022-05-23 08:49:05 Tagged date : UTC 2022-05-23 08:49:09 Emby Server Version 4.7.8.0 running ona DSM7 Synology NAS Transcoding disabled logs : embyservlogs Emby Client Apple TV 4k (3rd gen), latest version Stats for nerds while playing : Stream MP4 (25Mbps) Direct Play Video 4K HEVC Main 10 150 24Mbps 23.976 fps -> Direct Play (24 Mbps) Audio English EAC3 5.1 (Default) 768 kbps 48000 Hz -> Direct Play (768 kbps) Symptoms media playback starts normally audio track plays normally All the ATV on screen controls are visible and functioning, but the screen remains black (ie : no images from the video track are displayed ) Link to comment Share on other sites More sharing options...
Clayzee 4 Posted May 2, 2023 Author Share Posted May 2, 2023 On 5/1/2023 at 7:12 AM, kalg said: Sorry too say that emby client dosn't do hdr passthrough with .mkv files you have to use either plex or infuse or channels dvr (all extra pay methods thou) I've tested Emby on an Android TV, and HDR passtrough works with .mkv 17 hours ago, hstamas said: You can also convert your MKV movie container to MP4/MPV cant you? Since MKV or MP4 is just a container : the medias contained within would be the same, so I'm curious... why does it make a difference ? Link to comment Share on other sites More sharing options...
Luke 37066 Posted May 2, 2023 Share Posted May 2, 2023 Can you try updating to Emby for Apple TV 1.7.2? Thanks. Link to comment Share on other sites More sharing options...
kalg 4 Posted May 3, 2023 Share Posted May 3, 2023 i think the chap wants hdr passthrough in .mkv working i'm surprised that a dev dont known this wont happen on apple tv because emby team not made it work only tone mapping ie hdr to sdr (like chap said hdr passthough) Link to comment Share on other sites More sharing options...
Clayzee 4 Posted May 3, 2023 Author Share Posted May 3, 2023 7 hours ago, kalg said: i think the chap wants hdr passthrough in .mkv working i'm surprised that a dev dont known this wont happen on apple tv because emby team not made it work only tone mapping ie hdr to sdr (like chap said hdr passthough) There are two things : HDR signal not being passed to the TV DolvyVision videos showing a black screen -> I suppose the HDR signal not being passed from an .mkv file is specific to ATV, because I've seen it working on Emby for Android TV -> I don't what's the root cause of the DolbyVision issue, because in this case, the wiki checklist has been respected ( ie : DirectPlay with MP4 container, DV L5 etc. ) Link to comment Share on other sites More sharing options...
Clayzee 4 Posted May 3, 2023 Author Share Posted May 3, 2023 18 hours ago, Luke said: Can you try updating to Emby for Apple TV 1.7.2? Thanks. I updated the ATV client to the said version, but the behaviour ( ie : black screen when playing a DolbyVision video track ) is still the same Here are the Emby server logs : embysrvlog Link to comment Share on other sites More sharing options...
blipoids 0 Posted May 3, 2023 Share Posted May 3, 2023 Have you tried native vs mpv player in the settings? Can't recall exactly if this was terminology, sorry. Link to comment Share on other sites More sharing options...
Clayzee 4 Posted May 3, 2023 Author Share Posted May 3, 2023 8 minutes ago, blipoids said: Have you tried native vs mpv player in the settings? Can't recall exactly if this was terminology, sorry. The playback setting was set to Auto When forcing MPV, the Dolby Vision video track is displayed ! ...... but in pink/green tones only When forcing Native, the result is the same as the one experienced before ( black screen ) So, it's either colourblind style images or no images at all NB : I was really expecting the ATV/Emby combo to handle DV files correctly, considering that Apple favours that video format Link to comment Share on other sites More sharing options...
blipoids 0 Posted May 3, 2023 Share Posted May 3, 2023 Me too. And I'm just about to open a new thread here, actually two, on Emby bugs both on Apple TV as well as on LG's web OS. The only app I know of that handles DV is Infuse -however that also has a number of problems. Link to comment Share on other sites More sharing options...
hstamas 153 Posted May 3, 2023 Share Posted May 3, 2023 On 5/2/2023 at 5:36 AM, Clayzee said: I've tested Emby on an Android TV, and HDR passtrough works with .mkv Since MKV or MP4 is just a container : the medias contained within would be the same, so I'm curious... why does it make a difference ? Apple being Apple I guess. As long as the actual video format is within Apple specs switching to a MP4 container should solve at least some of your issues. Link to comment Share on other sites More sharing options...
GrimReaper 3294 Posted May 3, 2023 Share Posted May 3, 2023 1 hour ago, Clayzee said: When forcing MPV, the Dolby Vision video track is displayed ! ...... but in pink/green tones only Maybe I missed it, but does your TV support DV? Link to comment Share on other sites More sharing options...
Clayzee 4 Posted May 3, 2023 Author Share Posted May 3, 2023 3 hours ago, GrimReaper said: Maybe I missed it, but does your TV support DV? No, my TV does not support DV ( only HDR10 ) But this is why I bought the ATV : because of its ability to handle DV content for non-DV compliant TVs Does it mean that, using Emby on ATV, there's no way to display DV content if the TV doesn't support that format ? Link to comment Share on other sites More sharing options...
samuelqwe 313 Posted May 4, 2023 Share Posted May 4, 2023 20 hours ago, Clayzee said: No, my TV does not support DV ( only HDR10 ) But this is why I bought the ATV : because of its ability to handle DV content for non-DV compliant TVs Does it mean that, using Emby on ATV, there's no way to display DV content if the TV doesn't support that format ? Since DV Profile 5 files do not have any kind of fallback (to neither HDR or SDR), I would not expect it to work on your TV. I don’t believe the Apple TV is able to convert DV on the fly for non-DV compliant TVs. Link to comment Share on other sites More sharing options...
Clayzee 4 Posted May 4, 2023 Author Share Posted May 4, 2023 2 hours ago, samuelqwe said: Since DV Profile 5 files do not have any kind of fallback (to neither HDR or SDR), I would not expect it to work on your TV. I don’t believe the Apple TV is able to convert DV on the fly for non-DV compliant TVs. I was under the impression that this is what ATV does : converting DV to HDR10 if the display device isn't DV compliant You can have a look at Vincent T.'s analysis regarding the subject ( up to 02:20 ) : 1 Link to comment Share on other sites More sharing options...
samuelqwe 313 Posted May 4, 2023 Share Posted May 4, 2023 48 minutes ago, Clayzee said: I was under the impression that this is what ATV does : converting DV to HDR10 if the display device isn't DV compliant You can have a look at Vincent T.'s analysis regarding the subject ( up to 02:20 ) : Thanks for sharing, I had no idea it could do that. I suspect there are very specific conditions that allow this to work, because I was under the impression that most streaming services would just serve you an HDR10 file rather than sending DV that the Apple TV has to convert. That’s why I didn’t think the Apple TV was converting. Link to comment Share on other sites More sharing options...
Solution Clayzee 4 Posted May 6, 2023 Author Solution Share Posted May 6, 2023 So, If I'm right, and based on the troubleshooting conducted, this is the situation as of May 2023 : The ATV is able to convert DV to HDR10 on the fly when streaming content from Apple servers, but not from Emby The HDR passtrough on ATV using Emby doesn't work with .mkv containers Link to comment Share on other sites More sharing options...
a5ian300zx 7 Posted May 20, 2023 Share Posted May 20, 2023 It's you file that is causing the issue, you have DV file that is profile 5 and from what I have read apple tv does not support all the DV profiles so you have to convert them to DV 8 profile for DV playback, but as you you tv does not support it should revert back to hdr10 base layer providing the file has that in it which your one does by the looks of if eg BL+RPU so has both. Might be the way it is encoded. You can redo it a remove DV from it with using free tool like mkvtoolnix or paid tools like dvdfab video convertor. Link to comment Share on other sites More sharing options...
raven-au 17 Posted May 27, 2023 Share Posted May 27, 2023 On 5/4/2023 at 3:25 AM, Clayzee said: No, my TV does not support DV ( only HDR10 ) But this is why I bought the ATV : because of its ability to handle DV content for non-DV compliant TVs Does it mean that, using Emby on ATV, there's no way to display DV content if the TV doesn't support that format ? Probably not since Dolby Vision profile 5 does not have HDR10 fallback so it does not play. If you can convert it to Dolby Vision profile 8 it might play since they have HDR10 fallback capability, but you have trouble with those HDR10 videos too. Link to comment Share on other sites More sharing options...
gstar3 0 Posted July 18, 2023 Share Posted July 18, 2023 On 5/3/2023 at 5:36 PM, blipoids said: Me too. And I'm just about to open a new thread here, actually two, on Emby bugs both on Apple TV as well as on LG's web OS. The only app I know of that handles DV is Infuse -however that also has a number of problems. Which problems do infuse have? Link to comment Share on other sites More sharing options...
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