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Bug#1057053: Blank video when playing AV1 encoded videos
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Andreas Messer
Nov 28, 2023, 3:40:05 PM11/28/23
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Package: vlc
Version: 3.0.20-0+deb12u1
When playing an AV1 encoded video from webm file, video display is blank
and only audio is working. It seems to me that vlc tries hw acceleration
via VDPAU although my card does not support AV1 hardware decoding. VLC
should fall back to software decoding in this case. (It works properly if
I disable hardware acceleration entirely in vlc)
Please find command line output below:
$ vlc Optimistic\ Delay.webm
VLC media player 3.0.20 Vetinari (revision 3.0.20-0-g6f0d0ab126b)
[00005578b3e71520] main libvlc: VLC wird mit dem Standard-Interface ausgeführt. Benutzen Sie 'cvlc', um VLC ohne Interface zu verwenden.
[00007f3408004930] gl gl: Initialized libplacebo v4.208.0 (API v208)
libva info: VA-API version 1.17.0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/radeonsi_drv_video.so
libva info: Found init function __vaDriverInit_1_17
libva info: va_openDriver() returns 0
[00007f34082550e0] gl gl: Initialized libplacebo v4.208.0 (API v208)
[00007f3404c1b580] avcodec decoder: Using G3DVL VDPAU Driver Shared Library version 1.0 for hardware decoding
[00007f3404c1b580] main decoder error: buffer deadlock prevented
$ vdpauinfo | grep AV1
AV1_MAIN --- not supported ---
AV1_HIGH --- not supported ---
AV1_PROFESSIONAL --- not supported ---
Best regards,
Andreas Messer
--
gnuPG keyid: 8C2BAF51
fingerprint: 28EE 8438 E688 D992 3661 C753 90B3 BAAA 8C2B AF51
Version: 3.0.20-0+deb12u1
When playing an AV1 encoded video from webm file, video display is blank
and only audio is working. It seems to me that vlc tries hw acceleration
via VDPAU although my card does not support AV1 hardware decoding. VLC
should fall back to software decoding in this case. (It works properly if
I disable hardware acceleration entirely in vlc)
Please find command line output below:
$ vlc Optimistic\ Delay.webm
VLC media player 3.0.20 Vetinari (revision 3.0.20-0-g6f0d0ab126b)
[00005578b3e71520] main libvlc: VLC wird mit dem Standard-Interface ausgeführt. Benutzen Sie 'cvlc', um VLC ohne Interface zu verwenden.
[00007f3408004930] gl gl: Initialized libplacebo v4.208.0 (API v208)
libva info: VA-API version 1.17.0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/radeonsi_drv_video.so
libva info: Found init function __vaDriverInit_1_17
libva info: va_openDriver() returns 0
[00007f34082550e0] gl gl: Initialized libplacebo v4.208.0 (API v208)
[00007f3404c1b580] avcodec decoder: Using G3DVL VDPAU Driver Shared Library version 1.0 for hardware decoding
[00007f3404c1b580] main decoder error: buffer deadlock prevented
$ vdpauinfo | grep AV1
AV1_MAIN --- not supported ---
AV1_HIGH --- not supported ---
AV1_PROFESSIONAL --- not supported ---
Best regards,
Andreas Messer
--
gnuPG keyid: 8C2BAF51
fingerprint: 28EE 8438 E688 D992 3661 C753 90B3 BAAA 8C2B AF51
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