Richard Branches 231 Posted November 7, 2020 Share Posted November 7, 2020 (edited) Currently, the only certified Android TV device with Dolby TrueHD and DTS-HD Master Audio passtrough support is the Nvidia Shield. However, the original Xiaomi Mi Box was the only affordable device with the same support as far as I know, but it was removed altogether when the Android 9 update arrived recently, it appears it was removed due to licencing restrictions. When we play any video in Emby on any Android TV device without passtrough of the aforementioned codecs, the server transcode the audio stream into Dolby Digital. Why not transcoding those lossless audio codecs into PCM instead to keep the same lossless quality?. Maybe adding an option in the app's settings to turn this ON, because not every user will have their devices connected to a multichannel AVR with HDMI inputs, some still use an SPDIF connection so Dolby Digital is still necessary. I just hope that this is possible to implement for the devs. Thank you. Edited November 9, 2020 by Richard Branches 2 Link to comment Share on other sites More sharing options...
Richard Branches 231 Posted January 14, 2021 Author Share Posted January 14, 2021 Hey @ebr this is something already implemented in recent beta versions where the new option to transcode to Dolby Digital is OFF and those lossless codecs get decoded as multichannel PCM, which I assume it will work only on the Nvidia Shield, since it's the only Android TV device with multichannel PCM support. Can you mark this as "completed". Thanks. Link to comment Share on other sites More sharing options...
ebr 14913 Posted January 14, 2021 Share Posted January 14, 2021 Will move to completed once released. Thanks. Link to comment Share on other sites More sharing options...
MediaCenterSP 5 Posted February 21, 2021 Share Posted February 21, 2021 (edited) Hi, @ebr can you tell if this multichannel PCM conversion from the not supported codecs of a device is lossless or lossy. Edited February 21, 2021 by MediaCenterSP complete the question Link to comment Share on other sites More sharing options...
Richard Branches 231 Posted February 21, 2021 Author Share Posted February 21, 2021 It is lossless. On what device you want to play it? Link to comment Share on other sites More sharing options...
MediaCenterSP 5 Posted February 21, 2021 Share Posted February 21, 2021 15 minutes ago, Richard Branches said: It is lossless. On what device you want to play it? Thanks for confirm @Richard Branches . I've got a new Chromecast with Google TV. Link to comment Share on other sites More sharing options...
Richard Branches 231 Posted February 21, 2021 Author Share Posted February 21, 2021 Ok, you must know that Google capped multichannel PCM on all Android TV devices since Android 9, the Chromecast with Google TV is not the exception, the only Android TV device that still has multichannel PCM is the Nvidia Shield. Link to comment Share on other sites More sharing options...
MediaCenterSP 5 Posted February 21, 2021 Share Posted February 21, 2021 8 minutes ago, Richard Branches said: Ok, you must know that Google capped multichannel PCM on all Android TV devices since Android 9, the Chromecast with Google TV is not the exception, the only Android TV device that still has multichannel PCM is the Nvidia Shield. Thanks for the advice but I have to say that Kodi sends multichanel PCM 7.1 playing Dolby TrueHD and DTS-HD tracks. Tomorrow I'll test well in Emby. This year this little device don't stops to surpise me: 1 Link to comment Share on other sites More sharing options...
Richard Branches 231 Posted February 21, 2021 Author Share Posted February 21, 2021 1 minute ago, MediaCenterSP said: I have to say that Kodi sends multichanel PCM 7.1 playing Dolby TrueHD and DTS-HD tracks Ok, let us know if it works so we can exclude the CC from that limitation. Link to comment Share on other sites More sharing options...
MediaCenterSP 5 Posted February 21, 2021 Share Posted February 21, 2021 (edited) 5 minutes ago, Richard Branches said: Ok, let us know if it works so we can exclude the CC from that limitation. So I do when i'll test it. Edited February 21, 2021 by MediaCenterSP Link to comment Share on other sites More sharing options...
MediaCenterSP 5 Posted February 22, 2021 Share Posted February 22, 2021 Good Monday to everybody. I tested the PCM output of my Chromecast with Google TV. I can confirm that it supports PCM multichannel in Emby and Kodi but only Kodi seems to make a lossless extraction of PCM channels. I have opened an issue with all the info here: Link to comment Share on other sites More sharing options...
Richard Branches 231 Posted February 22, 2021 Author Share Posted February 22, 2021 Thank you for letting us know about that. Could you please do me a favor, please test this YouTube video with multichannel AAC that should get decoded as multichannel PCM, I would like to know if it also works with YouTube: Dolby Vision Demo #3 - Core Universe - 4K HDR Thanks. Link to comment Share on other sites More sharing options...
Mibok 118 Posted February 22, 2021 Share Posted February 22, 2021 Maybe is a little late to ask, but could be possible to add an option to transcode all multichannel tracks to multichannel PCM? with that i could control the volume from the AndroidTV remote that will be one less remote to take care about. Link to comment Share on other sites More sharing options...
Richard Branches 231 Posted February 22, 2021 Author Share Posted February 22, 2021 (edited) Emby only transcode one audio codec to another when the end device (TV or AV receiver) doesn't support it, for example: If you have your Android TV device connected to a TV that only supports Dolby Digital and PCM 2.0 and the conversion is set to ON, then: - Dolby Digital will play directly. - Multichannel PCM will be downmixed to stereo. - Dolby Digital Plus, Dolby TrueHD, DTS, DTS-HD Master Audio and multichannel AAC will be transcoded to Dolby Digital. If you have your Android TV device connected to a TV that only supports Dolby Digital and PCM 2.0 and the conversion is set to OFF, then: - Dolby Digital will play directly. - Multichannel PCM will be downmixed to stereo. - Dolby Digital Plus, Dolby TrueHD, DTS, DTS-HD Master Audio and multichannel AAC will be downmixed to stereo PCM. There isn't an option to transcode everything to PCM by user request but if the TV only supports PCM, then everything will be downmixed to stereo PCM. Edited February 23, 2021 by Richard Branches Link to comment Share on other sites More sharing options...
MediaCenterSP 5 Posted February 23, 2021 Share Posted February 23, 2021 10 hours ago, Richard Branches said: Thank you for letting us know about that. Could you please do me a favor, please test this YouTube video with multichannel AAC that should get decoded as multichannel PCM, I would like to know if it also works with YouTube: Dolby Vision Demo #3 - Core Universe - 4K HDR Thanks. No, this video brings PCM 2.0 only. Link to comment Share on other sites More sharing options...
Richard Branches 231 Posted February 23, 2021 Author Share Posted February 23, 2021 Yes, as we've talked in the other topic, the CC doesn't support multichannel PCM and I hope this is just a bug and not a Google imposition. Link to comment Share on other sites More sharing options...
MediaCenterSP 5 Posted February 23, 2021 Share Posted February 23, 2021 16 minutes ago, Richard Branches said: Yes, as we've talked in the other topic, the CC doesn't support multichannel PCM and I hope this is just a bug and not a Google imposition. Yes, and as we discuss in the other topic CC doesn't support MCPCM officially but Emby, Kodi and Plex seems to send MCPCM by some means Link to comment Share on other sites More sharing options...
Mibok 118 Posted February 23, 2021 Share Posted February 23, 2021 In my case i have an a/v receiver that supportrs multichannel PCM, Dolby True HD and DTS Master Audio, my request is based on that i can control the volume with the AndroidTV remote when the audio is PCM (including multichannel PCM). On the other side when setting bitstream mode it obviously send the data stream directly to the receiver so the only mode to change the volume is with the receiver remote. By transcoding all the audio including legacy DTS and Dolby i get to keep multichannel audio while being able to control the volume with the android tv remote. Link to comment Share on other sites More sharing options...
Richard Branches 231 Posted February 23, 2021 Author Share Posted February 23, 2021 @Mibok you must create a separate "Feature Request" topic for what you're requesting, then wait if enough people agrees to your request so Emby devs take action on that. 1 Link to comment Share on other sites More sharing options...
ebr 14913 Posted February 23, 2021 Share Posted February 23, 2021 1 hour ago, Mibok said: In my case i have an a/v receiver that supportrs multichannel PCM, Dolby True HD and DTS Master Audio, my request is based on that i can control the volume with the AndroidTV remote when the audio is PCM (including multichannel PCM). On the other side when setting bitstream mode it obviously send the data stream directly to the receiver so the only mode to change the volume is with the receiver remote. By transcoding all the audio including legacy DTS and Dolby i get to keep multichannel audio while being able to control the volume with the android tv remote. If your receiver supports CEC then the remote volume should work in both scenarios. Mine does and I just use the stock Shield remote. Link to comment Share on other sites More sharing options...
Richard Branches 231 Posted May 3, 2021 Author Share Posted May 3, 2021 Hello @ebr, don't forget to mark this as "completed" since it's now available in the just released 2.0.09g stable version. Thank you. 2 Link to comment Share on other sites More sharing options...
Mibok 118 Posted May 3, 2021 Share Posted May 3, 2021 Wow Thank you. About using CEC, my onkyo receiver doesn't get along with my Mi Box. But usually i'm the only one that really does care about surround sound, so i enabled PCM on the android device and enable passthrough only when i'm going to watch something Link to comment Share on other sites More sharing options...
Richard Branches 231 Posted May 3, 2021 Author Share Posted May 3, 2021 You should replace that old Mi Box with something better, like the new Mecool KM2, with Netflix and Prime Video certifications, S905X2 SoC and Android 10: https://www.mecoolonline.com/collections/mecool-km2/products/2021-mecool-newest-android-tv-10-box-km6-powered-by-amlogic-s905x4-av1-supported-4gb-ram-32gb-rom-1 1 Link to comment Share on other sites More sharing options...
clarkss12 295 Posted May 4, 2021 Share Posted May 4, 2021 4 hours ago, Richard Branches said: You should replace that old Mi Box with something better, like the new Mecool KM2, with Netflix and Prime Video certifications, S905X2 SoC and Android 10: https://www.mecoolonline.com/collections/mecool-km2/products/2021-mecool-newest-android-tv-10-box-km6-powered-by-amlogic-s905x4-av1-supported-4gb-ram-32gb-rom-1 Received my KM2 yesterday. Putting together a video now. Link to comment Share on other sites More sharing options...
bigrndahouse 0 Posted July 14, 2021 Share Posted July 14, 2021 On 2/20/2021 at 9:15 PM, MediaCenterSP said: Thanks for the advice but I have to say that Kodi sends multichanel PCM 7.1 playing Dolby TrueHD and DTS-HD tracks. Tomorrow I'll test well in Emby. This year this little device don't stops to surpise me: Question. I have the same Chromecast with Google TV and tried to play a DTS file but it doesn't come over as DTS just as 5.1. my DTS light on my Denon used to come on way back in the day from Kodi on the Fire sticks but since an update, that stopped working. Odd. How do you get PCM from the Google TV Chromecast? I'm using Emby Android TV app that was downloaded from the site. I hope to hear from you. Link to comment Share on other sites More sharing options...
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