1758748 - VAAPI not being used while playing videos (YT and files), config is as recommended

Status: RESOLVED FIXED

(Core :: Audio/Video: Playback, defect)

Description

[fabriciol.castillo]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:98.0) Gecko/20100101 Firefox/98.0

Steps to reproduce:

• Configure system to allow vaapi as explained in https://wiki.archlinux.org/title/Hardware_video_acceleration
• Test vaapi works in system: MPV plays videos from youtube using hardware video decoding, confirmed by inte_gpu_top (libva-utils) where there can be seen activity in "video" category
• Configure Firefox (official Manjaro repository) to work with vaapi as explained in https://wiki.archlinux.org/title/Firefox#Hardware_video_acceleration
• Install h264fy add-on to force youtube to just use h264 codecs and not vp8/9. Stats in youtube report avc1.640028 (137) / mp4a.40.2 (140) in codecs while this add-on is active.
• Play any video in youtube (no vaapi usage detected)
• Used the security.sandbox.content.level=0 configuration flag with no changes

Actual results:

• Check with intel_gpu_top while playing videos in YT and there's no activity in the "video" category. Playing 1080p60fs videos stutters at times as cpu resources are demanded (between 35% to 60%).
• If I play a mp4 video file from disk in mpv it shows video decoding activity while dropping the same file in firefox shows no activity while playing it.
• This behavior is new since firefox vaapi worked fine a couple of weeks ago (can't recall what firefox version was that)
• about:support shows the relevant configurations as needed for video acceleration to work

Expected results:

Youtube and videos from storage should make use of the video acceleration api just like mpv (used for comparison)

Comment 1

[fabriciol.castillo]

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{
"type": "env",
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{
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},
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"status": "force_enabled",
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},
{
"name": "DMABUF",
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"status": "available",
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}
],
"fallbacks": []
},
"crashGuards": []
},
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],
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],
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"addons": [
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{
"name": "Amazon.com",
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},
{
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"type": "extension",
"version": "1.1",
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"id": "[e-mail]"
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{
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"id": "jid1-TSgSxBhncsPBWQ@jetpack"
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}

Comment 2

[fabriciol.castillo]

vainfo: VA-API version: 1.13 (libva 2.13.0)
vainfo: Driver version: Intel i965 driver for Intel(R) Sandybridge Mobile - 2.4.1
vainfo: Supported profile and entrypoints
VAProfileMPEG2Simple : VAEntrypointVLD
VAProfileMPEG2Main : VAEntrypointVLD
VAProfileH264ConstrainedBaseline: VAEntrypointVLD
VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
VAProfileH264Main : VAEntrypointVLD
VAProfileH264Main : VAEntrypointEncSlice
VAProfileH264High : VAEntrypointVLD
VAProfileH264High : VAEntrypointEncSlice
VAProfileH264StereoHigh : VAEntrypointVLD
VAProfileVC1Simple : VAEntrypointVLD
VAProfileVC1Main : VAEntrypointVLD
VAProfileVC1Advanced : VAEntrypointVLD
VAProfileNone : VAEntrypointVideoProc

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Audio/Video: Playback' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 4

[fabriciol.castillo]

Operating System: Manjaro Linux
KDE Plasma Version: 5.24.2
KDE Frameworks Version: 5.91.0
Qt Version: 5.15.2
Kernel Version: 5.15.25-1-MANJARO (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Core™ i3-2330M CPU @ 2.20GHz
Memory: 7,7 GiB of RAM
Graphics Processor: Mesa DRI Intel® HD Graphics 3000

inxi -G
Graphics:
Device-1: Intel 2nd Generation Core Processor Family Integrated Graphics
driver: i915 v: kernel
Display: x11 server: X.Org v: 1.21.1.3 driver: X: loaded: modesetting
gpu: i915 resolution: 1366x768~60Hz
OpenGL: renderer: Mesa DRI Intel HD Graphics 3000 (SNB GT2)
v: 3.3 Mesa 21.3.7

pacman -Qi libva  ✔
Name : libva
Version : 2.13.0-1
Description : Video Acceleration (VA) API for Linux
Architecture : x86_64
URL : https://01.org/linuxmedia/vaapi
Licenses : MIT
Groups : None
Provides : libva-drm.so=2-64 libva-glx.so=2-64 libva-wayland.so=2-64
libva-x11.so=2-64 libva.so=2-64
Depends On : libdrm libgl libx11 libxext libxfixes wayland
Optional Deps : intel-media-driver: backend for Intel GPUs (>= Broadwell)
libva-vdpau-driver: backend for Nvidia and AMD GPUs
libva-intel-driver: backend for Intel GPUs (<= Haswell)
[installed]
Required By : chromium ffmpeg ffmpeg4.4 gstreamer-vaapi lib32-libva
libva-intel-driver libva-utils mpv
Optional For : None
Conflicts With : None
Replaces : None
Installed Size : 846,10 KiB
Packager : Maxime Gauduin <[e-mail]>
Build Date : vie 01 oct 2021 12:21:00
Install Date : lun 01 nov 2021 13:27:30
Install Reason : Installed as a dependency for another package
Install Script : No
Validated By : Signature

pacman -Qi libva-intel-driver  ✔
Name : libva-intel-driver
Version : 2.4.1-1
Description : VA-API implementation for Intel G45 and HD Graphics family
Architecture : x86_64
URL : https://01.org/linuxmedia/vaapi
Licenses : MIT
Groups : None
Provides : None
Depends On : libva libdrm
Optional Deps : None
Required By : None
Optional For : libva vlc
Conflicts With : None
Replaces : libva-driver-intel
Installed Size : 7,79 MiB
Packager : Maxime Gauduin <[e-mail]>
Build Date : mar 02 jun 2020 06:33:19
Install Date : mié 09 mar 2022 11:05:41
Install Reason : Explicitly installed
Install Script : No
Validated By : Signature

Name : firefox
Version : 98.0-1
Description : Standalone web browser from mozilla.org
Architecture : x86_64
URL : https://www.mozilla.org/firefox/
Licenses : MPL GPL LGPL
Groups : None
Provides : None
Depends On : gtk3 libxt mime-types dbus-glib ffmpeg4.4 nss ttf-font
libpulse
Optional Deps : networkmanager: Location detection via available WiFi networks
[installed]
libnotify: Notification integration [installed]
pulseaudio: Audio support [installed]
speech-dispatcher: Text-to-Speech
hunspell-en_US: Spell checking, American English
xdg-desktop-portal: Screensharing with Wayland [installed]
Required By : None
Optional For : None
Conflicts With : None
Replaces : None
Installed Size : 231,14 MiB
Packager : Jan Alexander Steffens (heftig) <[e-mail]>
Build Date : lun 07 mar 2022 10:59:26
Install Date : mié 09 mar 2022 10:02:43
Install Reason : Explicitly installed
Install Script : No
Validated By : Signature

Comment 5

[fabriciol.castillo]

I ran firefox with the MOZ_LOG="Dmabuf:5, PlatformDecoderModule:5" flag and discovered that VA-API is being disabled by plataform but I don't know why that is.

...
[Child 9970: Main Thread]: D/PlatformDecoderModule PDMInitializer, Init PDMs in Content process
[Child 9970: Main Thread]: D/Dmabuf Using DRM device /dev/dri/renderD128
[Child 9970: Main Thread]: D/Dmabuf nsDMABufDevice::IsDMABufVAAPIEnabled: EGL 1 media_ffmpeg_vaapi_enabled 1 CanUseHardwareVideoDecoding 1 XRE_IsRDDProcess 0
[Child 9970: Main Thread]: D/PlatformDecoderModule FFMPEG: VA-API FFmpeg is disabled by platform
[Child 9970: Main Thread]: D/Dmabuf nsDMABufDevice::IsDMABufVAAPIEnabled: EGL 1 media_ffmpeg_vaapi_enabled 1 CanUseHardwareVideoDecoding 1 XRE_IsRDDProcess 0
[Child 9970: Main Thread]: D/PlatformDecoderModule FFMPEG: VA-API FFmpeg is disabled by platform
[Child 9970: MediaPDecoder #1]: D/Dmabuf nsDMABufDevice::IsDMABufVAAPIEnabled: EGL 1 media_ffmpeg_vaapi_enabled 1 CanUseHardwareVideoDecoding 1 XRE_IsRDDProcess 0
[Child 9970: MediaPDecoder #1]: D/PlatformDecoderModule FFMPEG: VA-API is disabled by pref.
[Child 9970: MediaPDecoder #1]: D/PlatformDecoderModule FFMPEG: Initialising FFmpeg decoder
[Child 9970: MediaPDecoder #1]: D/PlatformDecoderModule FFMPEG: codec h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
[Child 9970: MediaPDecoder #1]: D/PlatformDecoderModule FFMPEG: Set get_buffer2 for customized buffer allocation
[Child 9970: MediaPDecoder #1]: D/PlatformDecoderModule FFMPEG: FFmpeg decoder init successful.
[Child 9970: MediaPDecoder #1]: D/Dmabuf nsDMABufDevice::IsDMABufVAAPIEnabled: EGL 1 media_ffmpeg_vaapi_enabled 1 CanUseHardwareVideoDecoding 1 XRE_IsRDDProcess 0
[Child 9970: MediaPDecoder #1]: D/PlatformDecoderModule FFMPEG: VA-API is disabled by pref.
[Child 9970: MediaPDecoder #1]: D/PlatformDecoderModule FFMPEG: Initialising FFmpeg decoder
...

Comment 6

[Alastor Wu [:alwu]]

You would need to enable those media.rdd-* pref, VAAPI can only be used in the RDD process. In addition, you would also need to start Firefox with MOZ_DISABLE_RDD_SANDBOX=1 environment variable until bug 1751363 is fixed.

Comment 7

[fabriciol.castillo]

Thnak you. I did as you indicated and have vaapi working again. Thanks!