schmitty 61 Posted April 24, 2020 Share Posted April 24, 2020 Hi, I have my Apple TV HD set to play Dolby Digital 5.1, and am trying to play media ripped from DVD into mkv h264 ac3. It is playing back as PCM. I have tried playing Dolby content from the Apple TV+ app, and it works fine. I believe this to be an issue with the Emby Theatre app. I am aware that mp4, mov and m4v are natively supported by the Apple TV. Emby Server is direct streaming to mp4 from what I can see. ffmpeg-directstream-b9a0b094-32e1-4d53-997b-8328c1cd5e67_1.txt Link to comment Share on other sites More sharing options...
vdatanet 1549 Posted April 24, 2020 Share Posted April 24, 2020 (edited) Your AC3 file is stereo not 5.1. My AVR also displays PCM when I play AC3 mono and stereo files. Instead, when I use nvidia shield the AVR displays Dolby Digital. Maybe Apple TV only bitstreams AC3 5.1 15:55:12.659 Stream #0:1(eng): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s (default) 15:55:12.659 Metadata: 15:55:12.659 title : English - Dolby Digital 2.0 15:55:12.659 BPS-eng : 192000 15:55:12.659 DURATION-eng : 00:19:32.992000000 15:55:12.659 NUMBER_OF_FRAMES-eng: 36656 15:55:12.659 NUMBER_OF_BYTES-eng: 28151808 Edited April 24, 2020 by vdatanet Link to comment Share on other sites More sharing options...
schmitty 61 Posted April 24, 2020 Author Share Posted April 24, 2020 Shouldn't it still play Dolby Digital 2.0? Link to comment Share on other sites More sharing options...
Luke 37010 Posted April 25, 2020 Share Posted April 25, 2020 Does your audio equipment support Dolby? Link to comment Share on other sites More sharing options...
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