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Cannot playback M4A ?


pigers
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Hi,

Seems Emby is not able to play M4A files created by youtube-dl (and avconv in process), it complains about missing compatible streams:

image.thumb.png.ae8fa2073fff1ee93bcd793a1c921661.png

in logs (attached) I found:

2021-09-21 20:20:55.905 Error App: Error in ffprobe
	*** Error Report ***
	Version: 4.6.4.0
	Command line: /app/emby/EmbyServer.dll -programdata /config -ffdetect /app/emby/ffdetect -ffmpeg /app/emby/ffmpeg -ffprobe /app/emby/ffprobe -restartexitcode 3
	Operating system: Linux version 5.10.0-8-amd64 (debian-kernel@lists.debian.org) (gcc-10 (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2) #1 S
	Framework: .NET Core 3.1.13
	OS/Process: x64/x64
	Runtime: app/emby/System.Private.CoreLib.dll
	Processor count: 4
	Data path: /config
	Application path: /app/emby
	System.Exception: System.Exception: ffprobe failed for file:"/data/music/MP3/!YT Playlists/Trance/[Trance] Female Vocal Trance (Voices in my Head) #119-fr-26o5PNq4.m4a" - streams and format are both null: 
	{
	
	
	ffprobe version 4.3.0-emby_2021_02_27 Copyright (c) 2007-2021 the FFmpeg developers and softworkz for Emby LLC
	  built with gcc 8.3.0 (crosstool-NG 1.24.0)
	[aac @ 0xe647c0] Audio object type SBR+21 is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
	[mov,mp4,m4a,3gp,3g2,mj2 @ 0xe62900] Failed to open codec in avformat_find_stream_info
	[aac @ 0xe647c0] Audio object type SBR+21 is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
	Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'file:/data/music/MP3/!YT Playlists/Trance/[Trance] Female Vocal Trance (Voices in my Head) #119-fr-26o5PNq4.m4a':
	  Metadata:
	    major_brand     : M4A 
	    minor_version   : 512
	    compatible_brands: isomiso2
	    encoder         : Lavf58.20.100
	  Duration: 00:50:36.86, start: 0.000000, bitrate: 194 kb/s
	    Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 96000 Hz, 2 channels, fltp, 192 kb/s (default)
	    Metadata:
	      handler_name    : SoundHandler
	[aac @ 0xe68700] Audio object type SBR+21 is not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
	Could not open codec for input stream 0
	
	
	   at Emby.Server.MediaEncoding.Probing.MediaProbeManager.GetMediaInfoInternal(String inputPath, String primaryPath, MediaProtocol protocol, String userAgent, Boolean extractChapters, String probeSizeArgument, Boolean isAudio, Boolean forceEnableLogging, CancellationToken cancellationToken)
	   at MediaBrowser.Providers.MediaInfo.FFProbeAudioInfo.Probe[T](MetadataResult`1 itemResult, MetadataRefreshOptions options, LibraryOptions libraryOptions, CancellationToken cancellationToken)
	   at MediaBrowser.Providers.Manager.MetadataService`2.RunCustomProvider(ICustomMetadataProvider`1 provider, MetadataResult`1 itemResult, String logName, MetadataRefreshOptions options, LibraryOptions libraryOptions, RefreshResult refreshResult, CancellationToken cancellationToken)
	Source: Emby.Server.MediaEncoding
	TargetSite: Void MoveNext()
	
2021-09-21 20:20:55.909 Info App: User policy for pigers. EnableAudioPlaybackTranscoding: True

to be played by user pigers

where as files is normally playable by VLC and appears okay in MediaInfo:

image.thumb.png.483c06d14ba4477e9ff902d6203837b4.png

embyserver.txt

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And it's not supported by ffmpeg at this time, so we're a little stuck. If you can provide a sample file for testing then we'll add it to our to do list for research, but your best bet will be converting the files to something more commonly used.

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