Body: <p>If i download an av1 file, then vlc player will play it perfectly</p>
  
  <p>however, if i convert an mp4 (avc video, aac audio) to av1, then vlc player won't play it</p>
  
  <p>this is the command i'm using with ffmpeg:</p>
  
  <pre><code>C:\Users\l\Desktop\6-app\ffmpeg -i y.mp4 -c:v libaom-av1 -crf 30 -b:v 0 -strict 
  experimental -vf scale=640:360 -r 30 -ab 192k -ar 48k -map_chapters -1 -map_metadata -1 z.mkv
  </code></pre>
  
  <p>? why won't vlc player play this</p>
  
  <p>I can't post the ffprobes here because of charachter limits</p>
  
  <p>however, i have the ffprobe results here</p>
  
  <p><a href="https://www.dropbox.com/s/awa5x8ez5s4h0wo/ffprobe.txt" rel="nofollow noreferrer">ffprobe.txt</a></p>
  
  <p>here's the file that was used to convert to av1</p>
  
  <p><a href="https://www.dropbox.com/s/wze3ley4s7bi956/club-1-head-roll-vert-half.mp4" rel="nofollow noreferrer">club-1-head-roll-vert-half.mp4</a></p>
  
  <p>here's the non-working file</p>
  
  <p><a href="https://www.dropbox.com/s/ncq9oihvgggnh4r/club-test-2.mkv" rel="nofollow noreferrer">club-test-2.mkv</a></p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2019-03-16T12:10:04.853Z
Comments.Text: Share full log of ffprobe for both files.
Comments.UserDisplayName: Gyan
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2019-03-16T12:50:49.663Z
Comments.Text: @gyan https://www.dropbox.com/s/awa5x8ez5s4h0wo/ffprobe.txt
Comments.UserDisplayName: abcjme
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2019-03-16T14:11:30.917Z
Comments.Text: I can play file generated using your command in VLC 4.0 nightly and Potplayer.
Comments.UserDisplayName: Gyan
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2019-03-16T17:22:57.110Z
Comments.Text: @gyan neither video player worked for me (inluding potplayer beta) · here's the non-working video file https://www.dropbox.com/s/ncq9oihvgggnh4r/club-test-2.mkv
Comments.UserDisplayName: abcjme
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2019-03-16T17:38:37.427Z
Comments.Text: Can you provide the source y.mp4?
Comments.UserDisplayName: Gyan
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2019-03-16T20:45:43.747Z
Comments.Text: @gyan https://www.dropbox.com/s/wze3ley4s7bi956/club-1-head-roll-vert-half.mp4
Comments.UserDisplayName: abcjme
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2019-03-17T05:41:18.980Z
Comments.Text: Works here. Upgrade ffmpeg to latest git.
Comments.UserDisplayName: Gyan
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2019-03-18T07:41:13.030Z
Comments.Text: @gyan · that solved it, thanks
Comments.UserDisplayName: abcjme
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2019-03-20T04:16:33.637Z
Comments.Text: @Gyan - maybe post that as an answer. It's hidden in the comments and if people come here looking for the answer to this question they may not see it.
Comments.UserDisplayName: stib
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2019-03-20T04:51:23.767Z
Comments.Text: @stib - it likely has to do with a transient bug in bitstream coding with the AV1 encoder. Since the encoder is still marked as experimental, these sort of issues are expected, and may recur with newer versions, so the 'answer' can't be used as a solution.
Comments.UserDisplayName: Gyan
Tags: <ffmpeg>
Title: ffmpeg av1-converted files don't play
UserDisplayName: abcjme
ThreadText: # ffmpeg av1-converted files don't play
  
  (Asked by: username_0 on 2019-03-16)
  
  If i download an av1 file, then vlc player will play it perfectly
  
  however, if i convert an mp4 (avc video, aac audio) to av1, then vlc player won't play it
  
  this is the command i'm using with ffmpeg:
  
  ```
  C:\Users\l\Desktop\6-app\ffmpeg -i y.mp4 -c:v libaom-av1 -crf 30 -b:v 0 -strict 
  experimental -vf scale=640:360 -r 30 -ab 192k -ar 48k -map_chapters -1 -map_metadata -1 z.mkv
  
  ```
  
  ? why won't vlc player play this
  
  I can't post the ffprobes here because of charachter limits
  
  however, i have the ffprobe results here
  
  [ffprobe.txt](https://www.dropbox.com/s/awa5x8ez5s4h0wo/ffprobe.txt)
  
  here's the file that was used to convert to av1
  
  [club-1-head-roll-vert-half.mp4](https://www.dropbox.com/s/wze3ley4s7bi956/club-1-head-roll-vert-half.mp4)
  
  here's the non-working file
  
  [club-test-2.mkv](https://www.dropbox.com/s/ncq9oihvgggnh4r/club-test-2.mkv)
  
  **Tags:** ffmpeg
  
  > **Comments:**
  > **username_1**: Share full log of ffprobe for both files.  
  > **username_0**: @username_1 https://www.dropbox.com/s/awa5x8ez5s4h0wo/ffprobe.txt  
  > **username_1**: I can play file generated using your command in VLC 4.0 nightly and Potplayer.  
  > **username_0**: @username_1 neither video player worked for me (inluding potplayer beta) · here's the non-working video file https://www.dropbox.com/s/ncq9oihvgggnh4r/club-test-2.mkv  
  > **username_1**: Can you provide the source y.mp4?  
  > **username_0**: @username_1 https://www.dropbox.com/s/wze3ley4s7bi956/club-1-head-roll-vert-half.mp4  
  > **username_1**: Works here. Upgrade ffmpeg to latest git.  
  > **username_0**: @username_1 · that solved it, thanks  
  > **username_2**: @username_1 - maybe post that as an answer. It's hidden in the comments and if people come here looking for the answer to this question they may not see it.  
  > **username_1**: @username_2 - it likely has to do with a transient bug in bitstream coding with the AV1 encoder. Since the encoder is still marked as experimental, these sort of issues are expected, and may recur with newer versions, so the 'answer' can't be used as a solution.  
  
  ---
  
  ## 0 answers
  
  