bfds89 0 Posted November 8, 2018 Share Posted November 8, 2018 Hi there. I'm trying to play som 4k Remuxes that have Dolby True HD track. I'm direct playing to an LG C7 OLED TV, but I noticed that when I do, the emby server converts the audio. I can play DTS-MA with no problems. Is there some kind of incompatibility with the Dolby True HD? Thanks. Link to comment Share on other sites More sharing options...
Luke 37994 Posted November 8, 2018 Share Posted November 8, 2018 Hi, does your TV support TrueHD? Link to comment Share on other sites More sharing options...
CBers 6882 Posted November 8, 2018 Share Posted November 8, 2018 I also have an LG C7 TV, which supports upto and including Dolby Atmos, but I am getting remuxed Dolby D audio output the same as @@bfds89. Link to comment Share on other sites More sharing options...
Luke 37994 Posted November 9, 2018 Share Posted November 9, 2018 What app? Link to comment Share on other sites More sharing options...
bfds89 0 Posted November 9, 2018 Author Share Posted November 9, 2018 What app? Latest emby version of webOS. Link to comment Share on other sites More sharing options...
CBers 6882 Posted November 9, 2018 Share Posted November 9, 2018 What app? Google Maps. 3 Link to comment Share on other sites More sharing options...
bfds89 0 Posted November 9, 2018 Author Share Posted November 9, 2018 Link to comment Share on other sites More sharing options...
SamES 925 Posted November 10, 2018 Share Posted November 10, 2018 (edited) @@bfds89, @@CBers can you please give me an idea of what you are wanting/expecting here wrt TrueHD/ATMOS? From all my research, the LG update for 2017+ OLED models that added support for ATMOS in a TrueHD stream only allows for decoding and playback of the ATMOS content via the internal speakers. It can't be redirected to an external receiver as a TrueHD/ATMOS stream. I'm not sure how good it will be from the internal speakers or if that is what you actually want. Basically, ATMOS can be supplied two ways. Firstly, it can be supplied as a lossy format in a DD+ stream (which should already be DirectPlaying in Emby - not Google Maps ) and this stream can be directed to a receiver via HDMI/ARC for full multi-channel enjoyment. With the updated support, ATMOS can now also be supplied in a lossless format in a TrueHD stream, either from a HDMI source, or possibly (?) via a network stream/local file. The problem is that the data rate in this lossless format is too high to be transmitted via HDMI/ARC back to a receiver, so it is only possible to play it using the internal speakers. This article describes it well and is consistent with all my other research. https://hdguru.com/understanding-dolby-atmos-from-an-supporting-lg-tv/ Now, understanding all this (and feel free to challenge if you think this is not correct) do you still need Emby to support DirectPlaying of TrueHD tracks, knowing that it will only be useful for playback via the built-in speakers? To make this work, we would have to detect the TV model and enable it only for models that support TrueHD. This now adds a support issue as new models are added. The bigger problem is for those that have a compatible model and want to playback a TrueHD track via ARC to a receiver. It won't work, so what will they get? In their case they will expect some form of audio track conversion so that they can stream to their receiver in a compatible format. From this perspective I believe the current implementation is the correct one and meets most users expectations. The only users missing out are those that want to listen to TrueHD/ATMOS via the built-in speakers, and I expect that anyone wanting a TrueHD/ATMOS experience are not using the built in speakers. Let me know your thoughts. Edited November 10, 2018 by SamES 1 Link to comment Share on other sites More sharing options...
romaing 4 Posted November 14, 2018 Share Posted November 14, 2018 @@SamES Thank you for this article and your reply. Very interesting and I am fully concerned as I have a 2018 Super HD LED TV Brand LG . I will test playing because I think I direct play some files with TRUEHD without converting. But I will check tonight. What I can't explain is that I have already noticed that my TV not always detect dolby atmos from my emby server (using internal speaker). I don't really now why somes are ok and somes not.... Here is one not ok , compliant with prerequisite : Solo star wars 4K Informations du média VidéoTitle4K HEVCCodecHEVCProfilMain 10Niveau153Résolution3840x2160Ratio d'aspect original16:9EntrelacéNoImages par seconde23.9760246Débit55274 kbpsGamme vidéoHDRCouleurs primairesbt2020Espace colorimétriquebt2020ncTransfert de couleursmpte2084Format de pixelyuv420p10leImages de référence1 AudioTitleEng TRUEHD 7.1LangueengCodecTRUEHDRépartition7.1Chaînes8 chDébit échantillon48000 HzProfondeur en Bit24 bitDéfautNo AudioTitleEng DTS 7.1 DefaultLangueengCodecDTSProfilDTS-HD MARépartition7.1Chaînes8 chDébit échantillon48000 HzProfondeur en Bit24 bitDéfautYes AudioTitleFre Dolby Digital+ 8 chLanguefreCodecEAC3Chaînes8 chDébit échantillon48000 HzDéfautNo AudioTitleFre Dolby Digital 5.1LanguefreCodecAC3Répartition5.1Chaînes6 chDébit640 kbpsDébit échantillon48000 HzDéfautNo Sous-titreTitleEng DefaultLangueengCodecPGSSUBDéfautYesForcéNoExterneNo Sous-titreTitleEngLangueengCodecSUBRIPDéfautNoForcéNoExterneNo Sous-titreTitleFreLanguefreCodecPGSSUBDéfautNoForcéNoExterneNo Sous-titreTitleFreLanguefreCodecSUBRIPDéfautNoForcéNoExterneNo Sous-titreTitleFre ForcedLanguefreCodecPGSSUBDéfautNoForcéYesExterneNo Conteneurmkv here is one which is ok : Dolby Atmos demo file VidéoTitle1080P H264CodecH264Étiquette du codecavc1AVCYesProfilMainNiveau40Résolution1920x1080Ratio d'aspect original16:9EntrelacéNoImages par seconde24Débit7773 kbpsProfondeur en Bit8 bitFormat de pixelyuv420pImages de référence1NAL4 AudioTitleUnd Dolby Digital+ 5.1 DefaultLangueundCodecEAC3Étiquette du codecec-3Répartition5.1Chaînes6 chDébit448 kbpsDébit échantillon48000 HzDéfautYes Conteneurmp4 Link to comment Share on other sites More sharing options...
SamES 925 Posted November 14, 2018 Share Posted November 14, 2018 So your first file, the primary audio track is TrueHD, so it will not DirectPlay. If you select this track, which is DD+, then it should also work with Atmos. 'Audio TitleFre Dolby Digital+ 8 ch'. However, I think in the current release, if there is a TrueHD track, then the audio selection screen loads the wrong track selection, so this may be causing some confusion as well. Try selecting Audio TitleFre Dolby Digital+ 8 ch from the Media Details screen before playback and see what you get. The second file has DD+, should it should DirectPlay fine Link to comment Share on other sites More sharing options...
romaing 4 Posted November 15, 2018 Share Posted November 15, 2018 I shouldn't selected the TRUEHD one which is english. I use to select only FR audio tracks. So I think I already selected the DD+ 8Ch I will test it again and take screenshot of what happens. I will also check trueHD directplay as I guess I get directplay with TRUEHD tracks. why should I get converting audio ? I didn't get that point. Can you reexplain to me ? another feedback I made some tests yesterday : I confirm tracks with DD+ are playing Dolby Atmos confirmed by logo displayed on my TV, and tracks with TRUEHD with Dolby Atmos are not playing Dolby atmos. You are completely right on that point. Link to comment Share on other sites More sharing options...
romaing 4 Posted November 15, 2018 Share Posted November 15, 2018 Here is one file I have tested which don't play Dolby Atmos for sure with audio FRA Dolby Digital+ 6ch Can you help me ? VidéoTitle4K HEVCCodecHEVCProfilMain 10Niveau153Résolution3840x2160Ratio d'aspect original16:9EntrelacéNoImages par seconde23.9760246Débit50491 kbpsGamme vidéoHDRCouleurs primairesbt2020Espace colorimétriquebt2020ncTransfert de couleursmpte2084Format de pixelyuv420p10leImages de référence1 AudioTitleFra Dolby Digital+ 6 ch DefaultLanguefraCodecEAC3Chaînes6 chDébit échantillon48000 HzDéfautYes AudioTitleEng TRUEHD 7.1LangueengCodecTRUEHDRépartition7.1Chaînes8 chDébit échantillon48000 HzProfondeur en Bit24 bitDéfautNo AudioTitleFra Dolby Digital 5.1LanguefraCodecAC3Répartition5.1Chaînes6 chDébit640 kbpsDébit échantillon48000 HzDéfautNo Sous-titreTitleEngLangueengCodecPGSSUBDéfautNoForcéNoExterneNo Sous-titreTitleFraLanguefraCodecPGSSUBDéfautNoForcéNoExterneNo Sous-titreTitleFraLanguefraCodecPGSSUBDéfautNoForcéNoExterneNo Sous-titreTitleFraLanguefraCodecPGSSUBDéfautNoForcéNoExterneNo Sous-titreTitleFraLanguefraCodecPGSSUBDéfautNoForcéNoExterneNo Conteneurmkv Link to comment Share on other sites More sharing options...
SamES 925 Posted November 15, 2018 Share Posted November 15, 2018 Can you attach a server log file when you playback this movie with the first Audio track selected? Thanks Link to comment Share on other sites More sharing options...
romaing 4 Posted November 16, 2018 Share Posted November 16, 2018 (edited) Sure. How I can do that ? Do I have to send ffmpeg log file ? first time I'm looking for log files, please show me the path. Edited November 16, 2018 by romaing Link to comment Share on other sites More sharing options...
CBers 6882 Posted November 16, 2018 Share Posted November 16, 2018 Sure. How I can do that ? Do I have to send ffmpeg log file ? first time I'm looking for log files, please show me the path. https://emby.media/community/index.php?/topic/790-how-to-report-a-problem/ 1 Link to comment Share on other sites More sharing options...
romaing 4 Posted November 16, 2018 Share Posted November 16, 2018 first here is a test with a TRUE HD file using internal speaker and it seems video is direct play but the audio is not. and seems to converting from TRUEHD to AC3, correct ? why ? Link to comment Share on other sites More sharing options...
romaing 4 Posted November 16, 2018 Share Posted November 16, 2018 (edited) @@SamES here is a log file with the issue. Many thanks Log.txt Edited November 16, 2018 by romaing Link to comment Share on other sites More sharing options...
SamES 925 Posted November 16, 2018 Share Posted November 16, 2018 first here is a test with a TRUE HD file using internal speaker and it seems video is direct play but the audio is not. and seems to converting from TRUEHD to AC3, correct ? why ? It is converting because the app is configured to convert TrueHD to AC3 as we know it's not playable. Link to comment Share on other sites More sharing options...
romaing 4 Posted November 16, 2018 Share Posted November 16, 2018 (edited) ok. I think I got it now. the app convert to be able to get something playable through ARC, which is most common usage, even if my TV speakers can handle it. correct ? But are you not able to detect from the TV what is the output selected ? I think Netflix app do it. I think my TV can handle TRUEHD trough HDMI ARC thanks to MAT codec. Does it tell you something ? but I'm not sure... I know DTS-HD is ok. Here the list of codes supported : Audio: AC4, AC3(Dolby Digital), EAC3, HE-AAC, AAC, MP2, MP3, PCM, DTS, DTS-HD, DTS Express, WMA, apt-X Vidéos: VC-1 Advanced Profile (except WMVA); Xvid(except 3 warp-point GMC), H.264/AVC, Motion Jpeg, H.265/HEVC, MPEG-2, MPEG-4, VP8, VP9, MPEG-1, RV30, RV40 @@SamES Did you get my log file ? the log fil is related to dolby digital + ATMOS issue, not playing I try to read the file, and I think EAC3 is transcoding to AC3 despite my TV support EAC3 Edited November 16, 2018 by romaing Link to comment Share on other sites More sharing options...
CBers 6882 Posted November 16, 2018 Share Posted November 16, 2018 For the record, DTS audio is passed through ARC OK, but not sure Dolby Atmos is, so may be a limitation to LG's implementation of ARC. May need to wait for the next version. I get Atmos audio passed to my LG (SJ9) soundbar from my Shield when it is directly connected to the soundbar. Link to comment Share on other sites More sharing options...
SamES 925 Posted November 16, 2018 Share Posted November 16, 2018 ok. I think I got it now. the app convert to be able to get something playable through ARC, which is most common usage, even if my TV speakers can handle it. correct ? But are you not able to detect from the TV what is the output selected ? I think Netflix app do it. I think my TV can handle TRUEHD trough HDMI ARC thanks to MAT codec. Does it tell you something ? but I'm not sure... I know DTS-HD is ok. Here the list of codes supported : Audio: AC4, AC3(Dolby Digital), EAC3, HE-AAC, AAC, MP2, MP3, PCM, DTS, DTS-HD, DTS Express, WMA, apt-X Vidéos: VC-1 Advanced Profile (except WMVA); Xvid(except 3 warp-point GMC), H.264/AVC, Motion Jpeg, H.265/HEVC, MPEG-2, MPEG-4, VP8, VP9, MPEG-1, RV30, RV40 @@SamES Did you get my log file ? the log fil is related to dolby digital + ATMOS issue, not playing I try to read the file, and I think EAC3 is transcoding to AC3 despite my TV support EAC3 Yes, this correct. We convert it to make it playable via arc as that is the most common usage. We can't detect the type of output selected. I don't think Netflix does this either. With Netflix, you will get ATMOS via EAC3, not TrueHD. It should be DirectPlaying with EAC3, but it is possible that it is not. I got the log but it is only the transcode log. There should also be a server.log file which is the actual server log. You could try sending that after you test. You should expect MP3, AC3, EAC3, DTS/DTS-MA to all DirectPlay, but remember this is also dependent on the container, video codec and what subs are requested. These can all cause transcoding as well. Link to comment Share on other sites More sharing options...
romaing 4 Posted November 17, 2018 Share Posted November 17, 2018 For the record, DTS audio is passed through ARC OK, but not sure Dolby Atmos is, so may be a limitation to LG's implementation of ARC. May need to wait for the next version. I get Atmos audio passed to my LG (SJ9) soundbar from my Shield when it is directly connected to the soundbar. No I don't think so... Dolby Atmos (from a DD+ track) should work through ARC. May be you play True HD Dolby Atmos ? Link to comment Share on other sites More sharing options...
romaing 4 Posted November 17, 2018 Share Posted November 17, 2018 Yes, this correct. We convert it to make it playable via arc as that is the most common usage. We can't detect the type of output selected. I don't think Netflix does this either. With Netflix, you will get ATMOS via EAC3, not TrueHD. It should be DirectPlaying with EAC3, but it is possible that it is not. I got the log but it is only the transcode log. There should also be a server.log file which is the actual server log. You could try sending that after you test. You should expect MP3, AC3, EAC3, DTS/DTS-MA to all DirectPlay, but remember this is also dependent on the container, video codec and what subs are requested. These can all cause transcoding as well. I think NETFLIX detect it because as soon as I switch my outpout, the audio codec display changes in netflix App. for instance if I switch from my internal speakers to HDMI ARC (wireless headphone Dolby Digital on it) , netflix audio switch from Dolby Atmos to 5.1 here is log server day Nov 15. Don't know if its is normal but It seems I only have one server log file per day. let you know that I equest no sub ==> Sub deactivated, but is seems emby refuse direcplay because of unsupported sub codec. If I read well the server log :-) then do u think MKV container is the issue ? Log server.txt Link to comment Share on other sites More sharing options...
SamES 925 Posted November 17, 2018 Share Posted November 17, 2018 Yes, 1 log per day is correct. @@romaing, just to clarify, what is the main issue as I'm now a little confused? So you should expect: TrueHD/Atmos, audio will convert, so probably will DirectStream DD+/Atmos, should DirectPlay DTS should DirectPlay Just be aware that if you are enabling subtitles, then some subtitle types will also cause transcoding. If this matches what you are seeing, then I think it is all working as expected. Link to comment Share on other sites More sharing options...
romaing 4 Posted November 17, 2018 Share Posted November 17, 2018 (edited) Ok, sorry, yes I will try to clarify. thank you for you support. I simply expect getting Atmos when playing files from emby. I'm not enabling subtitles. this is what shows the emby infos display : TrueHD Atmos => directstream . as you mentionned, it automatically converted because TrueHD atmos won't work through HDMI ARC as it is the common usage. DD+ Atmos ==> directplay DTS ==> directplay But it seems I'm not getting Atmos data. I sent you reports showing Dolby EAC3 is converted to AC3, then I suppose that's the reason why I lose Atmos. it appears as it directplay EAC3 and it doesn't. So I don't get Atmos on these files. this is my main issue. I get atmos with MP4 files from emby ... May be the files concerned are TrueHD Atmos but not DD+ Atmos ? Do we have a way to know if the file is Atmos or not ? Edited November 17, 2018 by romaing Link to comment Share on other sites More sharing options...
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