So, I upgraded from 20.04 to 21.04 to answer that question. And no, it
doesn't work in 21.04 hirsute either.

And now, since the last known working version 20.0.4-2ubuntu1 is not in
hirsute repos I can't downgrade to a working state. :/

```
$ apt policy mesa-vdpau-drivers
mesa-vdpau-drivers:
  Installed: 21.0.3-0ubuntu0.3
  Candidate: 21.0.3-0ubuntu0.3
  Version table:
 *** 21.0.3-0ubuntu0.3 500
        500 http://archive.ubuntu.com/ubuntu hirsute-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     21.0.1-2 500
        500 http://archive.ubuntu.com/ubuntu hirsute/main amd64 Packages
$
```

This is the o/p I get: 
```
VLC media player 3.0.12 Vetinari (revision 3.0.12-1-0-gd147bb5e7e)
[000055d36139f5b0] main libvlc: Running vlc with the default interface. Use 
'cvlc' to use vlc without interface.
Icon theme "elementary" not found.
[00007fe1700038f0] gl gl: Initialized libplacebo v2.72.0 (API v72)
libva info: VA-API version 1.10.0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/radeonsi_drv_video.so
libva info: Found init function __vaDriverInit_1_10
libva info: va_openDriver() returns 0
mesa: for the --simplifycfg-sink-common option: may only occur zero or one 
times!
mesa: for the --global-isel-abort option: may only occur zero or one times!
mesa: for the --amdgpu-atomic-optimizations option: may only occur zero or one 
times!
mesa: for the --structurizecfg-skip-uniform-regions option: may only occur zero 
or one times!
[00007fe1700038f0] glconv_vaapi_x11 gl error: vaCreateSurfaces: resource 
allocation failed
[00007fe1740477d0] main video output error: video output creation failed
[00007fe1f655eae0] main decoder error: failed to create video output
[00007fe1708d14f0] gl gl: Initialized libplacebo v2.72.0 (API v72)
[00007fe1f655eae0] avcodec decoder: Using G3DVL VDPAU Driver Shared Library 
version 1.0 for hardware decoding
[h264 @ 0x7fe1f656d100] hardware accelerator failed to decode picture
[h264 @ 0x7fe1f65546c0] hardware accelerator failed to decode picture
[h264 @ 0x7fe1f655ca40] hardware accelerator failed to decode picture
[h264 @ 0x7fe1f65efb80] hardware accelerator failed to decode picture
...
```

-- 
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to mesa in Ubuntu.
https://bugs.launchpad.net/bugs/1939455

Title:
  Upgrading from 20.0.4-2ubuntu1 to 21.0.3-0ubuntu0.2~20.04.1 breaks vlc
  video output

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1939455/+subscriptions


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