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Emby server on imac streaming to Chromecast 2.0 : no sound with mkv AC3

Ac3 chromecast

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#1 Raph Gill OFFLINE  

Raph Gill

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Posted 24 March 2019 - 07:52 AM

Hi guys,

 

I am new to this community and plan to by a lifetime subscription since the UI is much better than plex and the server is more responsive.

However I encounter the same problem I have on Plex :

 

I use a imac running on high sierra to stream my movies to Chromecast 2.0. But... I have no sound with mkv AC3, ie 90% of my files... I can only get a continuons awful spitting noise. How can I make my sound to work?

 

Looking forward to read from you mates! :)

 

Cheers,

 

raph 

 



#2 Luke OFFLINE  

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Posted 24 March 2019 - 10:21 PM

Hi there, can we please look at an example? Please attach the information requested in how to report a media playback issue. thanks !



#3 Raph Gill OFFLINE  

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Posted 25 March 2019 - 04:48 AM

Hi Luke,

Thanks for this quick answer.

Here is an example of the sound I get : click
Here is the log.

2019-03-25 16:36:49.531
Application version: 4.0.2.0

http://192.168.1.60:...elsNotSupported

{"Protocol":"File","Id":"5457970a02dceb737ef8706338a36e88","Path":"/Volumes/DISQUE2T/Videos/Movies/HD/Allegiant.2016.mkv","Type":"Default","Container":"mkv","Size":2358077793,"Name":"Allegiant.2016","IsRemote":false,"RunTimeTicks":72332263424,"ReadAtNativeFramerate":false,"DiscardCorruptPts":false,"FillWallClockDts":false,"IgnoreDts":false,"IgnoreIndex":false,"SupportsTranscoding":true,"SupportsDirectStream":true,"SupportsDirectPlay":true,"IsInfiniteStream":false,"RequiresOpening":false,"RequiresClosing":false,"RequiresLooping":false,"SupportsProbing":true,"MediaStreams":[{"Codec":"h264","TimeBase":"1/1000","CodecTimeBase":"1001/48000","VideoRange":"SDR","DisplayTitle":"1080p H264","NalLengthSize":"4","IsInterlaced":false,"IsAVC":true,"BitRate":2608051,"BitDepth":8,"RefFrames":1,"IsDefault":true,"IsForced":false,"Height":800,"Width":1920,"AverageFrameRate":23.9760246,"RealFrameRate":23.9760246,"Profile":"High","Type":"Video","AspectRatio":"2.40:1","Index":0,"IsExternal":false,"IsTextSubtitleStream":false,"SupportsExternalStream":false,"PixelFormat":"yuv420p","Level":40,"IsAnamorphic":false},{"Codec":"aac","Language":"eng","TimeBase":"1/1000","CodecTimeBase":"1/48000","DisplayTitle":"Eng AAC 5.1 Default","IsInterlaced":false,"ChannelLayout":"5.1","BitRate":320000,"Channels":6,"SampleRate":48000,"IsDefault":true,"IsForced":false,"Profile":"HE-AAC","Type":"Audio","Index":1,"IsExternal":false,"IsTextSubtitleStream":false,"SupportsExternalStream":false,"Level":0},{"Codec":"srt","DisplayTitle":"Und","IsInterlaced":false,"IsDefault":false,"IsForced":false,"Type":"Subtitle","Index":2,"IsExternal":true,"IsTextSubtitleStream":true,"SupportsExternalStream":true,"Path":"/Volumes/DISQUE2T/Videos/Movies/HD/Allegiant.2016.srt"}],"Formats":[],"Bitrate":2608051,"RequiredHttpHeaders":{}}

User policy for imac: EnablePlaybackRemuxing: True EnableVideoPlaybackTranscoding: True EnableAudioPlaybackTranscoding: True



/private/var/folders/mb/v_b424xx7292xyhfqccsl9300000gn/T/AppTranslocation/0051726D-E168-425D-9A99-135B277C4F6B/d/EmbyServer.app/Contents/MacOS/ffmpeg -ss 00:54:35.259 -f matroska -i file:"/Volumes/DISQUE2T/Videos/Movies/HD/Allegiant.2016.mkv" -map 0:0 -map 0:1 -map -0:s -c:v:0 copy -copyts -avoid_negative_ts disabled -start_at_zero -vsync -1 -map_metadata -1 -map_chapters -1 -threads 0 -codec:a:0 ac3 -metadata:s:a:0 language=eng -disposition:a:0 default -ac:a:0 6 -ab:a:0 320000 -ar:a:0 48000 -y "/Users/imac/.config/emby-server/transcoding-temp/9d22871b5fb4c07f0b2875c58c88f197.mkv"

ffmpeg version 4.0.2-emby_2018_10_29 Copyright © 2000-2018 the FFmpeg developers
built with Apple LLVM version 10.0.0 (clang-1000.11.45.2)
configuration: --enable-static --disable-shared --disable-doc --disable-ffplay --enable-gmp --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-fontconfig --enable-gnutls --enable-libass --enable-libbluray --enable-libfreetype --enable-libmysofa --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libwavpack --enable-libwebp --enable-libxml2 --enable-libzimg --enable-libshine --enable-gpl --enable-avisynth --enable-libxvid --enable-libaom --enable-version3 --enable-libzvbi
libavutil 56. 14.100 / 56. 14.100
libavcodec 58. 18.100 / 58. 18.100
libavformat 58. 12.100 / 58. 12.100
libavdevice 58. 3.100 / 58. 3.100
libavfilter 7. 16.100 / 7. 16.100
libswscale 5. 1.100 / 5. 1.100
libswresample 3. 1.100 / 3. 1.100
libpostproc 55. 1.100 / 55. 1.100
Input #0, matroska,webm, from 'file:/Volumes/DISQUE2T/Videos/Movies/HD/Allegiant.2016.mkv':
Metadata:
encoder : libebml v1.3.1 + libmatroska v1.4.2
creation_time : 2016-06-30T00:17:25.000000Z
Duration: 02:00:33.23, start: 0.000000, bitrate: 2608 kb/s
Stream #0:0: Video: h264 (High), yuv420p(progressive), 1920x800 [SAR 1:1 DAR 12:5], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
Metadata:
BPS : 2418154
BPS-eng : 2418154
DURATION : 02:00:33.226000000
DURATION-eng : 02:00:33.226000000
NUMBER_OF_FRAMES: 173424
NUMBER_OF_FRAMES-eng: 173424
NUMBER_OF_BYTES : 2186381981
NUMBER_OF_BYTES-eng: 2186381981
_STATISTICS_WRITING_APP: mkvmerge v7.8.0 ('River Man') 32bit built on Mar 27 2015 16:18:02
_STATISTICS_WRITING_APP-eng: mkvmerge v7.8.0 ('River Man') 32bit built on Mar 27 2015 16:18:02
_STATISTICS_WRITING_DATE_UTC: 2016-06-30 00:17:25
_STATISTICS_WRITING_DATE_UTC-eng: 2016-06-30 00:17:25
_STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Stream #0:1(eng): Audio: aac (HE-AAC), 48000 Hz, 5.1, fltp (default)
Metadata:
BPS : 188030
BPS-eng : 188030
DURATION : 02:00:33.195000000
DURATION-eng : 02:00:33.195000000
NUMBER_OF_FRAMES: 169528
NUMBER_OF_FRAMES-eng: 169528
NUMBER_OF_BYTES : 170007443
NUMBER_OF_BYTES-eng: 170007443
_STATISTICS_WRITING_APP: mkvmerge v7.8.0 ('River Man') 32bit built on Mar 27 2015 16:18:02
_STATISTICS_WRITING_APP-eng: mkvmerge v7.8.0 ('River Man') 32bit built on Mar 27 2015 16:18:02
_STATISTICS_WRITING_DATE_UTC: 2016-06-30 00:17:25
_STATISTICS_WRITING_DATE_UTC-eng: 2016-06-30 00:17:25
_STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
_STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (aac (native) -> ac3 (native))
Press [q] to stop, [?] for help
Output #0, matroska, to '/Users/imac/.config/emby-server/transcoding-temp/9d22871b5fb4c07f0b2875c58c88f197.mkv':
Metadata:
encoder : Lavf58.12.100
Stream #0:0: Video: h264 (High) (H264 / 0x34363248), yuv420p(progressive), 1920x800 [SAR 1:1 DAR 12:5], q=2-31, 23.98 fps, 23.98 tbr, 1k tbn, 1k tbc (default)
Stream #0:1(eng): Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1, fltp, 320 kb/s (default)
Metadata:
encoder : Lavc58.18.100 ac3
frame= 626 fps=0.0 q=-1.0 size= 11816kB time=00:54:59.12 bitrate= 29.3kbits/s speed=6.59e+03x
frame= 1326 fps=1325 q=-1.0 size= 23443kB time=00:55:28.43 bitrate= 57.7kbits/s speed=3.33e+03x
frame= 2002 fps=1333 q=-1.0 size= 35052kB time=00:55:56.34 bitrate= 85.6kbits/s speed=2.24e+03x
frame= 2713 fps=1355 q=-1.0 size= 45184kB time=00:56:26.19 bitrate= 109.3kbits/s speed=1.69e+03x
frame= 3479 fps=1390 q=-1.0 size= 52932kB time=00:56:58.03 bitrate= 126.9kbits/s speed=1.37e+03x
frame= 4249 fps=1415 q=-1.0 size= 60015kB time=00:57:30.00 bitrate= 142.5kbits/s speed=1.15e+03x
frame= 4993 fps=1425 q=-1.0 size= 66923kB time=00:58:01.23 bitrate= 157.5kbits/s speed= 994x
frame= 5726 fps=1430 q=-1.0 size= 74758kB time=00:58:31.82 bitrate= 174.4kbits/s speed= 877x
frame= 6485 fps=1440 q=-1.0 size= 80022kB time=00:59:03.57 bitrate= 185.0kbits/s speed= 787x
frame= 7047 fps=1408 q=-1.0 size= 96308kB time=00:59:26.90 bitrate= 221.2kbits/s speed= 713x
frame= 7782 fps=1414 q=-1.0 size= 104842kB time=00:59:57.46 bitrate= 238.7kbits/s speed= 653x
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frame=6526



#4 Luke OFFLINE  

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Posted 26 March 2019 - 03:09 PM

What is your Chromecast connected to?



#5 Raph Gill OFFLINE  

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Posted 26 March 2019 - 07:43 PM

It's connected to a HDMI splitter that separate the video and the sound.



#6 Luke OFFLINE  

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Posted 27 March 2019 - 02:09 AM

What's happening is Chromecast is detecting that your equipment supports AC3, when it actually doesn't. So that's why we're outputting AC3 and then you end up with no sound.

 

Do you really have to use the hdmi splitter? If you can simplify your connections, I'm sure this problem will go away.



#7 Raph Gill OFFLINE  

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Posted 27 March 2019 - 02:38 AM

Thank you Luke. I'll try and keep you updated!






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