Answers.Body: <p>ffmpeg v4.0.2 or higher can encode/transcode VP9 in mp4.</p>
  <p>Commandline (when transcoding):
  ffmpeg -i INPUT.MKV -c:v libvpx-vp9 OUTPUT.MP4</p>
  <p>Commandline (when remuxing (Super fast)):
  ffmpeg -i INPUT.MKV -c:v copy OUTPUT.MP4</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-11-10T11:15:40.517Z
Answers.Text: Your second command isn't transcoding, it's called remuxing, the process of moving encoded streams from one container to another. Transcoding involves going from one codec to another and requires decoding the source stream and encoding it into the destination stream.
Answers.UserDisplayName: Will
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2018-10-14T12:14:35.740Z
Answers.LastActivityDate: 2021-07-09T07:21:58.733Z
Answers.LastEditDate: 2021-07-09T07:21:58.733Z
Answers.UserDisplayName: Manthaar Janyaro
Answers.Body: <p>FFmpeg, a command-line app, can write VP9 streams in MP4s.</p>
  
  <p>Get a static daily/snapshot binary from <a href="https://ffmpeg.zeranoe.com/builds/" rel="nofollow noreferrer">https://ffmpeg.zeranoe.com/builds/</a></p>
  
  <p>Basic command is</p>
  
  <pre><code>ffmpeg -i in.mov -c:v vp9 out.mov
  </code></pre>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-03-20T12:28:12.477Z
Answers.Text: Getting error: Unknown encoder 'vp9'
Answers.UserDisplayName: adityav
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-03-20T12:41:37.767Z
Answers.Text: Works here. You got the 20170317 static build, right? Use full form: `-c:v libvpx-vp9`
Answers.UserDisplayName: Gyan
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2017-03-20T12:18:55.243Z
Answers.LastActivityDate: 2018-10-14T12:29:38.250Z
Answers.LastEditDate: 2018-10-14T12:29:38.250Z
Answers.UserDisplayName: Gyan
Body: <p>Does MP4 support VP9 codec or is it exclusive to WebM?</p>
  
Tags: <mp4><mkv><vp9>
Title: Is it possible to encode MP4 video with VP9 codec?
UserDisplayName: adityav
ThreadText: # Is it possible to encode MP4 video with VP9 codec?
  
  (Asked by: username_0 on 2017-03-20)
  
  Does MP4 support VP9 codec or is it exclusive to WebM?
  
  **Tags:** mp4, mkv, vp9
  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_1 on 2018-10-14. Score: 3
  
  ffmpeg v4.0.2 or higher can encode/transcode VP9 in mp4.
  
  Commandline (when transcoding):
  ffmpeg -i INPUT.MKV -c:v libvpx-vp9 OUTPUT.MP4
  
  Commandline (when remuxing (Super fast)):
  ffmpeg -i INPUT.MKV -c:v copy OUTPUT.MP4
  
  > **Comments:**
  > **username_2**: Your second command isn't transcoding, it's called remuxing, the process of moving encoded streams from one container to another. Transcoding involves going from one codec to another and requires decoding the source stream and encoding it into the destination stream.  
  
  ---
  
  ### Answer by username_3 on 2017-03-20. Score: 1
  
  FFmpeg, a command-line app, can write VP9 streams in MP4s.
  
  Get a static daily/snapshot binary from <https://ffmpeg.zeranoe.com/builds/>
  
  Basic command is
  
  ```
  ffmpeg -i in.mov -c:v vp9 out.mov
  
  ```
  
  > **Comments:**
  > **username_0**: Getting error: Unknown encoder 'vp9'  
  > **username_3**: Works here. You got the 20170317 static build, right? Use full form: `-c:v libvpx-vp9`  
  
  ---
  
  