Audio not working on some youtube links, get "audio/x-unknown" error

[priestc]

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• You will be asked some questions and requested to provide some information, please read them carefully and answer honestly
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Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2016.04.06. If it's not read this FAQ entry and update. Issues with outdated version will be rejected.

• [X ] I've verified and I assure that I'm running youtube-dl 2016.04.06

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• [ X] At least skimmed through README and most notably FAQ and BUGS sections
• [ X] Searched the bugtracker for similar issues including closed ones

What is the purpose of your issue?

• [X ] Bug report (encountered problems with youtube-dl)
• Site support request (request for adding support for a new site)
• Feature request (request for a new functionality)
• Question
• Other

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The following sections concretize particular purposed issues, you can erase any section (the contents between triple ---) not applicable to your issue

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If the purpose of this issue is a bug report, site support request or you are not completely sure provide the full verbose output as follows:

Add -v flag to your command line you run youtube-dl with, copy the whole output and insert it here. It should look similar to one below (replace it with your log inserted between triple ```):

$ youtube-dl -v <your command line>
[debug] System config: []
[debug] User config: []
[debug] Command-line args: [u'-v', u'http://www.youtube.com/watch?v=BaW_jenozKcj']
[debug] Encodings: locale cp1251, fs mbcs, out cp866, pref cp1251
[debug] youtube-dl version 2016.04.06
[debug] Python version 2.7.11 - Windows-2003Server-5.2.3790-SP2
[debug] exe versions: ffmpeg N-75573-g1d0487f, ffprobe N-75573-g1d0487f, rtmpdump 2.4
[debug] Proxy map: {}
...
<end of log>

Description of your issue, suggested solution and other information

I'm using Ubuntu. Sometimes when I download youtube links, it works perfectly. Sometims the video will apear to download, but when I try to play the video, there is no sound.

That is an example of the error message that my media player gives me. When I try to play in another media player, it gives me a similar error.

When I download the video, it seems to download the video part first, then the audio part, then it combines the two into a single file. This merging process appears to be broken. When I first started using youtube-dl it didn't used to do that. It used to download the file all in one piece and it worked pretty much 100% of the time. How can I re-enable the "download as one piece" mode?

Here are some examples of videos that are broken when I try to download them:

uibtdAez0gI
LFZlb5Sf0jY
0ZXGVaszR2I
1AlAVPTZ004

It seems that about 50% of the videos I download these day is broken this way.

[dstftw]

Post the full output of youtube-dl when run with -v, i.e. add -v flag to your command line, copy the whole output and post it in the issue body wrapped in ``` for better formatting. It should look similar to this:

$ youtube-dl -v <your command line>
[debug] System config: []
[debug] User config: []
[debug] Command-line args: [u'-v', u'http://www.youtube.com/watch?v=BaW_jenozKcj']
[debug] Encodings: locale cp1251, fs mbcs, out cp866, pref cp1251
[debug] youtube-dl version 2015.12.06
[debug] Git HEAD: 135392e
[debug] Python version 2.6.6 - Windows-2003Server-5.2.3790-SP2
[debug] exe versions: ffmpeg N-75573-g1d0487f, ffprobe N-75573-g1d0487f, rtmpdump 2.4
[debug] Proxy map: {}
...

Do not post screenshots of verbose log only plain text is acceptable.

The output (including the first lines) contains important debugging information. Issues without the full output are often not reproducible and therefore do not get solved in short order, if ever.

[priestc]

$ youtube-dl -v 1AlAVPTZ004
[debug] System config: []
[debug] User config: []
[debug] Command-line args: [u'-v', u'1AlAVPTZ004']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2016.04.05
[debug] Python version 2.7.6 - Linux-3.13.0-83-generic-x86_64-with-Ubuntu-14.04-trusty
[debug] exe versions: avconv 11.3-6, avprobe 11.3-6, rtmpdump 2.4
[debug] Proxy map: {}
[youtube] 1AlAVPTZ004: Downloading webpage
[youtube] 1AlAVPTZ004: Downloading video info webpage
[youtube] 1AlAVPTZ004: Extracting video information
[youtube] 1AlAVPTZ004: Downloading MPD manifest
WARNING: Requested formats are incompatible for merge and will be merged into mkv.
[debug] Invoking downloader on u'https://r17---sn-a5m7ln7d.googlevideo.com/videoplayback?id=d4094054f4d9d34e&itag=136&source=youtube&requiressl=yes&mm=31&mn=sn-a5m7ln7d&mv=u&ms=au&nh=IgpwcjA0LmxheDE2KgkxMjcuMC4wLjE&pl=23&ratebypass=yes&mime=video/mp4&gir=yes&clen=105308741&lmt=1394075667238679&dur=439.941&mt=1460066825&key=dg_yt0&upn=y2UiIVdlscI&signature=4AEA469D76BE73864A70C7BBBEEA1C6AA2F152FF.71C6B6A06C86BE20228D0181512E94D94E214679&sver=3&fexp=9406124,9410705,9416126,9416891,9420452,9422544,9422596,9423662,9426857,9426926,9427902,9428398,9428606,9428856,9429246,9429693,9430829,9431284,9433257,9433295,9433312,9433318,9433445,9433508&ip=72.215.186.147&ipbits=0&expire=1460088764&sparams=ip,ipbits,expire,id,itag,source,requiressl,mm,mn,mv,ms,nh,pl,ratebypass,mime,gir,clen,lmt,dur'
[download] Destination: 2012 Panini Cooperstown Baseball Blaster Box Break!-1AlAVPTZ004.f136.mp4
[download] 100% of 100.43MiB in 00:49
[debug] Invoking downloader on u'https://r17---sn-a5m7ln7d.googlevideo.com/videoplayback?dur=440.021&keepalive=yes&lmt=1426491942311678&fexp=9406124%2C9410705%2C9416126%2C9416891%2C9420452%2C9422544%2C9422596%2C9423662%2C9426857%2C9426926%2C9427902%2C9428398%2C9428606%2C9428856%2C9429246%2C9429693%2C9430829%2C9431284%2C9433257%2C9433295%2C9433312%2C9433318%2C9433445%2C9433508&nh=IgpwcjA0LmxheDE2KgkxMjcuMC4wLjE&expire=1460088764&sparams=clen%2Cdur%2Cgir%2Cid%2Cip%2Cipbits%2Citag%2Ckeepalive%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cnh%2Cpl%2Crequiressl%2Csource%2Cupn%2Cexpire&key=yt6&mime=audio%2Fwebm&requiressl=yes&sver=3&itag=251&pl=23&upn=CQmGxhxQ1K0&ipbits=0&mm=31&id=o-AHhDtcCd3q5Xv5TJXXxQnd4012G8OxOmP1sC3oD6hvRx&mn=sn-a5m7ln7d&clen=8304517&gir=yes&ms=au&mv=u&mt=1460066825&source=youtube&signature=55D2E9A19230F0183356715AB66F20C9727C890F.53B3BF179DFEBB32330A6177BF250A26E2105A6C&ip=72.215.186.147&ratebypass=yes'
[download] Destination: 2012 Panini Cooperstown Baseball Blaster Box Break!-1AlAVPTZ004.f251.webm
[download] 100% of 7.92MiB in 00:03
[ffmpeg] Merging formats into "2012 Panini Cooperstown Baseball Blaster Box Break!-1AlAVPTZ004.mkv"
[debug] ffmpeg command line: avconv -y -i 'file:2012 Panini Cooperstown Baseball Blaster Box Break!-1AlAVPTZ004.f136.mp4' -i 'file:2012 Panini Cooperstown Baseball Blaster Box Break!-1AlAVPTZ004.f251.webm' -c copy -map 0✌️0 -map 1🅰️0 'file:2012 Panini Cooperstown Baseball Blaster Box Break!-1AlAVPTZ004.temp.mkv'
Deleting original file 2012 Panini Cooperstown Baseball Blaster Box Break!-1AlAVPTZ004.f136.mp4 (pass -k to keep)
Deleting original file 2012 Panini Cooperstown Baseball Blaster Box Break!-1AlAVPTZ004.f251.webm (pass -k to keep)

[yan12125]

Both VLC 2.2.2 and mpv 0.16.0 work fine for me. Most like you need to install some additional softwares: https://www.google.com/#q=required+plugin+could+not+be+found