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No audio with Web interface & Chromecast


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Im having a new issue with some file when emby is transcoding my mkv to my chromecast or even with the web browser interface.
There's no audio, the source file has AC3 5.1. I looked through the log and I noticed that the audio data is 0KB but I'm not sure if I read that right

I also see ''warning'' message regarding the transcoding stream (has not been used for any stream, the most likely reason.......) I have no idea what that's mean.


 Codec AVOption b (set bitrate (in bits/s)) specified for output file #0 (C:\Users\Flexraid\AppData\Roaming\MediaBrowser-Server\transcoding-temp\2e7e521ca79ea6a1fe0e548465b27c88.mkv) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.

Output #0, matroska, to 'C:\Users\Flexraid\AppData\Roaming\MediaBrowser-Server\transcoding-temp\2e7e521ca79ea6a1fe0e548465b27c88.mkv':
    encoder         : Lavf57.32.100
    Stream #0:0: Video: h264 (H264 / 0x34363248), yuv420p, 1280x718 [sAR 1:1 DAR 640:359], q=2-31, 23.98 fps, 23.98 tbr, 1k tbn, 1k tbc (default)
Stream mapping:
  Stream #0:1 -> #0:0 (copy)
Press [q] to stop, [?] for help
frame= 2684 fps=0.0 q=-1.0 size=   63276kB time=00:02:08.58 bitrate=4031.1kbits/s speed= 257x    
frame= 4215 fps=4210 q=-1.0 size=   95010kB time=00:03:12.44 bitrate=4044.4kbits/s speed= 192x    
frame= 5584 fps=3720 q=-1.0 size=  125878kB time=00:04:09.54 bitrate=4132.3kbits/s speed= 166x    
frame= 8024 fps=4009 q=-1.0 size=  173071kB time=00:05:51.31 bitrate=4035.7kbits/s speed= 176x    
frame= 9118 fps=3641 q=-1.0 size=  199724kB time=00:06:36.94 bitrate=4121.9kbits/s speed= 159x    
frame=10433 fps=3473 q=-1.0 size=  240288kB time=00:07:31.78 bitrate=4357.0kbits/s speed= 150x    
frame=12638 fps=3605 q=-1.0 size=  289634kB time=00:09:03.75 bitrate=4363.5kbits/s speed= 155x    
frame=13616 fps=3399 q=-1.0 size=  313374kB time=00:09:44.54 bitrate=4391.7kbits/s speed= 146x    
frame=16189 fps=3593 q=-1.0 size=  362435kB time=00:11:31.86 bitrate=4291.4kbits/s speed= 154x    
frame=18089 fps=3611 q=-1.0 size=  403669kB time=00:12:51.10 bitrate=4288.5kbits/s speed= 154x    
frame=18819 fps=3416 q=-1.0 size=  417831kB time=00:13:21.55 bitrate=4270.3kbits/s speed= 145x    
frame=21290 fps=3571 q=-1.0 Lsize=  465860kB time=00:15:04.61 bitrate=4218.7kbits/s speed= 152x    
video:465686kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.037568%



my emby version is beta 3.1.6034.22791. I had the problem with the previous beta version.
I don't understand why it doesn't do it on all the mkv file with the same audio spec.

any clue where I should look ?


I attached the log, there's 2 remux log because while I tested the file, I changed the bitrate playback from the web browser to see if audio was going to kickin but it didn't.


Thank you.




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That's wierd luke because my emby is set to BETA (not dev) and I just did a update check and I don't have anything..

perhaps I can try to uninstall and reinstall.


What is the latest beta version ?

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ok I uninstall the version I had and reinstalled the beta 3.1.183.


The problem is still occuring, if I play episode 3 it's find and if I play episode 4 it doesn't work..  I have a few file from different shows that does the same thing.

my next step is to try a different ffmpeg version.

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!!! Thank you Luke ! that was the problem.. before reading your reply I did a fresh install on a different computer and it works so I figured it was something inside emby.

Would you mind tell me why a simple refresh fix the issue ? the file doesn't change !?


what could have cause that ? would it be because I get sometime the same episode with better quality and just overwrite the file ?. I thought emby rescan automatically if the file is different.


Thx again ! :)


Question not related this: my emby folder under c:\users\..... Appdata is still named MediaBrowser.. it doesn't really matter but how can I make it Emby. :) even uninstalling emby and reinstalling doesn't change that. I know if I delete the whole configuration that might work but I don't want to loose all my settings and profile.

Edited by Sp3kt3r
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