Answers.Body: <p>It's not very clear what they mean. If you look further down on the same page it says it accepts 5.1 @ 512 kbps.</p>
  
  <pre><code>Recommended audio bitrates for uploads
  
  Mono    128 kbps
  Stereo  384 kbps
  5.1     512 kbps
  </code></pre>
  
  <p>YouTube doesn't currently support 5.1 playback. If you upload a 5.1 audio track it gets <a href="https://productforums.google.com/forum/#!topicsearchin/youtube/5.1">converted to stereo</a>. </p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-10-07T17:50:50.630Z
Answers.Text: The threads are all 3 years old though.
Answers.UserDisplayName: mmlac
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-10-07T18:31:31.263Z
Answers.Text: There are no news for the contrary either. Anyway I tried downloading a surround test YT movie in multiple formats (aac, vorbis - audio only and aac in mp4) with youtube-dl and they're all stereo. If you upload your own test file I can probe it for you. In any case stereo + 5.1 can only mean two separate audio tracks (someone even suggested binaural audio :)
Answers.UserDisplayName: aergistal
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-10-07T18:55:56.800Z
Answers.Text: Ok, I will try that and see how that works out. I'll keep you posted.
Answers.UserDisplayName: mmlac
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-10-07T09:55:22.203Z
Answers.LastActivityDate: 2015-10-07T09:55:22.203Z
Answers.UserDisplayName: aergistal
Answers.Body: <p>The two major platforms that YouTube video players use are Adobe Flash, and Adobe Air. Flash 11 only supports 2 channel audio. Adobe air 3 supports multichannel audio. Also HTML5 supports multi channel audio. most multichannel streams will be PCM no bit stream, as you need licensing from Dolby or DTS to encode/decode. Furthermore multi channel audio is only supported for TV devices, on all other devices hasMultiChannelAudio() always returns false. This is probably due to HDCP / DRM requirements by publishers. Finally many smart TVs, especially Samsungs, will only send 2 channel audio from the optical output (again HDCP/DRM reasons). So you need to be sure what player / equipment you are using. A smart TV using ARC (audio return channel) to a receiver will have multichannel YouTube audio.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-11-23T17:38:09.287Z
Answers.LastActivityDate: 2015-11-23T17:38:09.287Z
Answers.UserDisplayName: Frank
Answers.Body: <p>if you upload in ac3 it gets converted to he-aac it wont play back from youtube in 5.1 but youtube-dl will give you back a 5.1 track</p>
  
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Answers.CreationDate: 2021-12-23T12:27:04.180Z
Answers.LastActivityDate: 2021-12-23T12:27:04.180Z
Answers.UserDisplayName: Four Track
Body: <p>Youtube states that it only supports <a href="https://support.google.com/youtube/answer/1722171?hl=en">Stereo or Stereo + 5.1</a>. </p>
  
  <p>How does this work? Does it mean that there should be two audio streams included in the container or is this a special encoding?</p>
  
  <p>( I am using Premiere Pro )</p>
  
Tags: <premiere><youtube>
Title: How do I get Stereo + 5.1 for YouTube videos?
UserDisplayName: mmlac
ThreadText: # How do I get Stereo + 5.1 for YouTube videos?
  
  (Asked by: username_0 on 2015-10-06)
  
  Youtube states that it only supports [Stereo or Stereo + 5.1](https://support.google.com/youtube/answer/1722171?hl=en).
  
  How does this work? Does it mean that there should be two audio streams included in the container or is this a special encoding?
  
  ( I am using Premiere Pro )
  
  **Tags:** premiere, youtube
  
  
  ---
  
  ## 3 answers
  
  ### Answer by username_1 on 2015-10-07. Score: 7
  
  It's not very clear what they mean. If you look further down on the same page it says it accepts 5.1 @ 512 kbps.
  
  ```
  Recommended audio bitrates for uploads
  
  Mono    128 kbps
  Stereo  384 kbps
  5.1     512 kbps
  
  ```
  
  YouTube doesn't currently support 5.1 playback. If you upload a 5.1 audio username_3 it gets [converted to stereo](https://productforums.google.com/forum/#!topicsearchin/youtube/5.1).
  
  > **Comments:**
  > **username_0**: The threads are all 3 years old though.  
  > **username_1**: There are no news for the contrary either. Anyway I tried downloading a surround test YT movie in multiple formats (aac, vorbis - audio only and aac in mp4) with youtube-dl and they're all stereo. If you upload your own test file I can probe it for you. In any case stereo + 5.1 can only mean two separate audio tracks (someone even suggested binaural audio :)  
  > **username_0**: Ok, I will try that and see how that works out. I'll keep you posted.  
  
  ---
  
  ### Answer by username_2 on 2015-11-23. Score: 1
  
  The two major platforms that YouTube video players use are Adobe Flash, and Adobe Air. Flash 11 only supports 2 channel audio. Adobe air 3 supports multichannel audio. Also HTML5 supports multi channel audio. most multichannel streams will be PCM no bit stream, as you need licensing from Dolby or DTS to encode/decode. Furthermore multi channel audio is only supported for TV devices, on all other devices hasMultiChannelAudio() always returns false. This is probably due to HDCP / DRM requirements by publishers. Finally many smart TVs, especially Samsungs, will only send 2 channel audio from the optical output (again HDCP/DRM reasons). So you need to be sure what player / equipment you are using. A smart TV using ARC (audio return channel) to a receiver will have multichannel YouTube audio.
  
  
  ---
  
  ### Answer by username_3 on 2021-12-23. Score: 0
  
  if you upload in ac3 it gets converted to he-aac it wont play back from youtube in 5.1 but youtube-dl will give you back a 5.1 username_3
  
  
  ---
  
  