Question regarding DD 5.1 output

[andyblac644 69]

I see that the AppleTV 4K has a Dolby Digital Plus decoder but it can't atm can't output as bitstream, it has to output as PCM when using the Auto setting, but when Surround setting is use it should output as Dolby Digital 5.1.

 

now here is the question why is Emby server transcoding to AC3 when the AppleTV 4K could do this on the fly, I know the AppleTV 4K can do this for AAC 5.1, if I play a media with a AAC 5.1 Emby client direct plays and my Surround Bar see it as bitstream DD5.1, so as the AppleTV has a DDP decoder and a DD encoder why is emby doing a transcode and not the leave it to AppleTV 4K and allow emby to Direct Play the file.

 

Archive.zip

Edited April 11, 2018 by andyblac644

[ebr 15662]

We probably just haven't taken that into account as a new capability.

 

Are you already running the beta of the app?

[andyblac644 69]

We probably just haven't taken that into account as a new capability.

 

Are you already running the beta of the app?

 

yes

[ebr 15662]

Restart the app and see if it behaves differently.

[andyblac644 69]

Restart the app and see if it behaves differently.

 

I'll be right back.

[andyblac644 69]

Restart the app and see if it behaves differently.

 

@@ebr yup, working thanks 

 

any chance of a DDP logo in the episode details screen ?

Edited April 11, 2018 by andyblac644

[andyblac644 69]

@@ebr hmmmm
 
 
it lies.

Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (eac3 (native) -> ac3 (native))

ffmpeg-remux-defd86de-a8f1-4522-a771-bb3a81effe14.txt

Edited April 11, 2018 by andyblac644

[ebr 15662]

I can't access your attachment above...

[andyblac644 69]

I can't access your attachment above...

 

@@ebr this one ok ?

ffmpeg-remux-defd86de-a8f1-4522-a771-bb3a81effe14.txt

[ebr 15662]

That's an mkv.  It will always need to be remuxed.  I only modified the profile for true direct playing (mp4).

[andyblac644 69]

That's an mkv.  It will always need to be remuxed.  I only modified the profile for true direct playing (mp4).

 

 

@@ebr remuxed yes, but audio should be direct streamed, not transcoded. EAC3 -> AC3, just like video is h264 is not transcoded but direct streamed.

 

ie the audio track should be -copy 

 

not like it is see below.

Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (eac3 (native) -> ac3 (native))

Edited April 11, 2018 by andyblac644

[andyblac644 69]

if I manually remux to M4V then it does indeed DirectStream

 

[andyblac644 69]

@@ebr @@corey is this something you can fix ?

Edited April 13, 2018 by andyblac644

[corey 315]

I defer to @@ebr on this one. He knows much more about this stuff than I do

[ebr 15662]

@@ebr @@corey is this something you can fix ?

 

Have you tried it again?

[andyblac644 69]

Have you tried it again?

 

 

since when ?              #11            

 

 

Edited April 13, 2018 by andyblac644

[ebr 15662]

Since yesterday morning - but you would have had to force restart the app.

 

Can you please try that?

[andyblac644 69]

Since yesterday morning - but you would have had to force restart the app.

 

Can you please try that?

 

 

yes, just same thing it still transcoding for an MKV.

 

Edited April 13, 2018 by andyblac644

[ebr 15662]

Can I please see the ffmpeg log from that?

[andyblac644 69]

Can I please see the ffmpeg log from that?

 

sure

/bin/ffmpeg -noaccurate_seek -f matroska,webm -i file:"/video2/TVShows/Blacklist, The/Season 05/The Blacklist - S05E16 - The Capricorn Killer - WEBDL-1080p - h264 EAC3 5.1.mkv" -threads 0 -map 0:0 -map 0:1 -map -0:s -codec:v:0 copy -bsf:v h264_mp4toannexb -copyts -vsync -1 -codec:a:0 ac3 -ac 6 -ab 384000  -f segment -max_delay 5000000 -avoid_negative_ts disabled -map_metadata -1 -map_chapters -1 -start_at_zero -segment_time 6  -individual_header_trailer 0 -break_non_keyframes 1 -segment_format mpegts -segment_list_type m3u8 -segment_start_number 0 -segment_list "/config/transcoding-temp/eb9b25c3bdda5c6a760ebbb91215a349.m3u8" -y "/config/transcoding-temp/eb9b25c3bdda5c6a760ebbb91215a349%d.ts"

Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (eac3 (native) -> ac3 (native))

ffmpeg-remux-49e78317-4312-4319-811c-17b9d891d468.txt

Edited April 13, 2018 by andyblac644

[ebr 15662]

Okay, the reason is because of the higher bitrate for DD+.

 

While the device may be able to handle it in the proper container (mp4)  the method we use to deliver the content when transcoding is limited to 384kb/s on the audio bitrate.  We put this limit in specifically because of problems discovered (and published specs) with Apple.

 

We can try some things in beta to see if maybe those restrictions can be relaxed in some circumstances.

[andyblac644 69]

thx, or maybe a user setting to override "Allow higher bitrate audio (this can cause some compatibility issues)"

[ebr 15662]

Please try it with the latest beta server.

[andyblac644 69]

Please try it with the latest beta server.

 

 

sorry, but just the sane with Version 3.3.1.17 beta

http://192.168.2.1:8096/emby/videos/fafc9e685e1d7e2d7b5247ac0f21d68b/hls1/main/72.ts?DeviceId=CA339CCC-A59D-4855-94CB-6FE73DE97BE6&MediaSourceId=fafc9e685e1d7e2d7b5247ac0f21d68b&VideoCodec=h264&AudioCodec=ac3,aac,mp3&AudioStreamIndex=1&VideoBitrate=139872000&AudioBitrate=128000&MaxWidth=3840&PlaySessionId=402c1b0d2e314cddbe6aa319071e23d8&api_key=57c32daf44384780b4225ac3490bbb3c&EnableSubtitlesInManifest=true&RequireAvc=false&Tag=5c502369281dcb26c90e89581ad3fb1c&SegmentContainer=ts&BreakOnNonKeyFrames=True&h264-profile=high,main,baseline,constrainedbaseline&h264-deinterlace=true&h264-level=42&audiochannels=6&TranscodeReasons=ContainerNotSupported,VideoCodecNotSupported,AudioCodecNotSupported

/bin/ffmpeg -ss 00:07:12.000 -noaccurate_seek -f matroska,webm -i file:"/video2/TVShows/Grey's Anatomy/Season 14/Grey's Anatomy - S14E19 - Beautiful Dreamer - WEBDL-1080p - h264 EAC3 5.1.mkv" -threads 0 -map 0:0 -map 0:1 -map -0:s -codec:v:0 copy -bsf:v h264_mp4toannexb -copyts -vsync -1 -codec:a:0 ac3 -ac 6 -ab 128000  -f segment -max_delay 5000000 -avoid_negative_ts disabled -map_metadata -1 -map_chapters -1 -start_at_zero -segment_time 6 -segment_time_delta -432 -individual_header_trailer 0 -break_non_keyframes 1 -segment_format mpegts -segment_list_type m3u8 -segment_start_number 72 -segment_list "/config/transcoding-temp/2aab17488ec7119f3ac5ec2a309151cb.m3u8" -y "/config/transcoding-temp/2aab17488ec7119f3ac5ec2a309151cb%d.ts"

ffmpeg-remux-d3b756dd-aac7-4461-a24d-3598bdc7e7a4.txt

Edited April 14, 2018 by andyblac644

[Luke 40063]

Please try the next beta, thanks.