<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>

CC BY-SA 4.0
2019-03-16T12:10:04.853Z
Share full log of ffprobe for both files.
Gyan
CC BY-SA 4.0
2019-03-16T12:50:49.663Z
@gyan https://www.dropbox.com/s/awa5x8ez5s4h0wo/ffprobe.txt
abcjme
CC BY-SA 4.0
2019-03-16T14:11:30.917Z
I can play file generated using your command in VLC 4.0 nightly and Potplayer.
Gyan
CC BY-SA 4.0
2019-03-16T17:22:57.110Z
@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
abcjme
CC BY-SA 4.0
2019-03-16T17:38:37.427Z
Can you provide the source y.mp4?
Gyan
CC BY-SA 4.0
2019-03-16T20:45:43.747Z
@gyan https://www.dropbox.com/s/wze3ley4s7bi956/club-1-head-roll-vert-half.mp4
abcjme
CC BY-SA 4.0
2019-03-17T05:41:18.980Z
Works here. Upgrade ffmpeg to latest git.
Gyan
CC BY-SA 4.0
2019-03-18T07:41:13.030Z
@gyan · that solved it, thanks
abcjme
CC BY-SA 4.0
2019-03-20T04:16:33.637Z
@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.
stib
CC BY-SA 4.0
2019-03-20T04:51:23.767Z
@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.
Gyan
<ffmpeg>
ffmpeg av1-converted files don't play
abcjme
# 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
here's the file that was used to convert to av1
club-1-head-roll-vert-half.mp4
here's the non-working file
club-test-2.mkv

**Tags:** ffmpeg

> **Comments:**
> **username_1**: Share full log of ffprobe for both files.  
> **username_0**: @gyan 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**: @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  
> **username_1**: Can you provide the source y.mp4?  
> **username_0**: @gyan https://www.dropbox.com/s/wze3ley4s7bi956/club-1-head-roll-vert-half.mp4  
> **username_1**: Works here. Upgrade ffmpeg to latest git.  
> **username_0**: @gyan · 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.  

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## 0 answers

