{"action":"created","issue":{"url":"https://api.github.com/repos/plexinc/plex-media-player/issues/72","labels_url":"https://api.github.com/repos/plexinc/plex-media-player/issues/72/labels{/name}","comments_url":"https://api.github.com/repos/plexinc/plex-media-player/issues/72/comments","events_url":"https://api.github.com/repos/plexinc/plex-media-player/issues/72/events","html_url":"https://github.com/plexinc/plex-media-player/issues/72","id":113645389,"number":72,"title":"Enable option for decoded audio channels to match source","user":{"login":"millercentral","id":7720102,"avatar_url":"https://avatars.githubusercontent.com/u/7720102?v=3","gravatar_id":"","url":"https://api.github.com/users/millercentral","html_url":"https://github.com/millercentral","followers_url":"https://api.github.com/users/millercentral/followers","following_url":"https://api.github.com/users/millercentral/following{/other_user}","gists_url":"https://api.github.com/users/millercentral/gists{/gist_id}","starred_url":"https://api.github.com/users/millercentral/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/millercentral/subscriptions","organizations_url":"https://api.github.com/users/millercentral/orgs","repos_url":"https://api.github.com/users/millercentral/repos","events_url":"https://api.github.com/users/millercentral/events{/privacy}","received_events_url":"https://api.github.com/users/millercentral/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":4,"created_at":"2015-10-27T18:03:44Z","updated_at":"2015-11-18T11:21:49Z","closed_at":null,"body":"Currently when PMP decodes an audio stream it always outputs all channels defined in settings (ie, if you select 7.1 it always outputs a 7.1 LPCM stream). If the source audio track has less channels then the output, then PMP adds silence to the unused channels.\r\n\r\nThis behavior prevents AVRs with 7.1+ speaker layouts from expanding audio content to all speakers using THX Ultra, Dolby PLIIx, or other processing techniques because the AVR believes it is already receiving a 7.1 soundtrack. \r\n\r\nGiven the assumption that an AVR will always be able to do a better (or more user controllable) job at expanding audio to the speakers attached to it, please add a \"Match Source\" output channels option in PMP for decoded audio that when selected decodes audio, but sends the same LPCM channels to the AVR as the original content, so that the receiver can still expand the sound field.\r\n\r\nWithout this, bitstreaming is required to take advantage of AVR capabilities, which has a distinct disadvantage when it comes to video sync.\r\n\r\nThis thread covers this (and other audio-related) topics:\r\nhttp://forums.plex.tv/discussion/comment/1041587/#Comment_1041587 \r\n\r\nThanks!"},"comment":{"url":"https://api.github.com/repos/plexinc/plex-media-player/issues/comments/157682806","html_url":"https://github.com/plexinc/plex-media-player/issues/72#issuecomment-157682806","issue_url":"https://api.github.com/repos/plexinc/plex-media-player/issues/72","id":157682806,"user":{"login":"TonioRoffo","id":15906380,"avatar_url":"https://avatars.githubusercontent.com/u/15906380?v=3","gravatar_id":"","url":"https://api.github.com/users/TonioRoffo","html_url":"https://github.com/TonioRoffo","followers_url":"https://api.github.com/users/TonioRoffo/followers","following_url":"https://api.github.com/users/TonioRoffo/following{/other_user}","gists_url":"https://api.github.com/users/TonioRoffo/gists{/gist_id}","starred_url":"https://api.github.com/users/TonioRoffo/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/TonioRoffo/subscriptions","organizations_url":"https://api.github.com/users/TonioRoffo/orgs","repos_url":"https://api.github.com/users/TonioRoffo/repos","events_url":"https://api.github.com/users/TonioRoffo/events{/privacy}","received_events_url":"https://api.github.com/users/TonioRoffo/received_events","type":"User","site_admin":false},"created_at":"2015-11-18T11:21:49Z","updated_at":"2015-11-18T11:21:49Z","body":"@millercentral - I would like to add something to what OP has posted.  For 2 channel, Dolby prologic encoded material, it is of course preferable to have 2 channel output so that the receiver can do proper decoding.\r\n\r\nHowever, when doing music playback, Dolby Prologic is also engaged because the receiver of course sees Plex as the same source.  For that, I would like to see a switch/option (Gui or not) so that for music library content, 2 channel audio can be sent as LPCM according to the 5.1 or 7.1 settings with silence on the remaining channels.  This way, music plays back as stereo, untouched, 2 channel movie content plays back using Prologic decoding, without touching any setting on the receiver.\r\n\r\nAs PMP is built for music & video afficionados (Audiophile has a bad ring to it...) this would be a great addition."}}