Video encoded with VP9 codec is unplayable
I'm using VLC for iOS 2.7.4.
I found that many videos encoded with VP9 codec can't be played using VLC. Instead of the video, I only see some garbage, but the sound plays fine.
Here is an example video that demonstrates the problem. This video can be played fine using VLC for desktop, yet VLC for iOS doesn't seem to handle it. This video was created using the following command:
ffmpeg -i source.mkv -vf scale=640:-1 -c:v vp9 -b:v 2048k -map v example.mkv