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Important security settings

Don't allow FF to automatically fill in forms with stored passwords signon.autofillForms = false
(This can now be found in Preferences as “Autofill logins and passwords”)

HW video decoding using VAAPI

https://bugzilla.mozilla.org/show_bug.cgi?id=1683808 https://bugzilla.mozilla.org/show_bug.cgi?id=1610199

MOZ_X11_EGL=1 firefox # Not needed anymore as there is option gfx.x11-egl.force-enabled
gfx.x11-egl.force-enabled = true
media.ffmpeg.vaapi.enabled = true
media.ffvpx.enabled = false
gfx.webrender.enabled = true

Possibly disable use of av1/av01 (YouTube uses this with 1080p otherwise)
media.av1.enabled = false

There are now also new settings for separate rendering process (RDD)
Have not fully understood yet what needs to be set.

MOZ_X11_EGL=1 MOZ_LOG="PlatformDecoderModule:5" firefox 2>&1 | grep 'VA-API'

To get better log why VAAPI is disabled run Firefox with:
MOZ_LOG="Dmabuf:5, PlatformDecoderModule:5"

Checking if HW decoder is active

AMD

Check if “uvd” is enabled. UVD stands for Unified Video Decoder

watch -n '0.1' cat '/sys/kernel/debug/dri/0/radeon_pm_info'
or
watch -n '0.1' cat '/sys/kernel/debug/dri/0/amdgpu_pm_info'

Known problems

Nextcloud talk

When a screen is shared from remote end only a black screen is shown.

Log output from:

MOZ_X11_EGL=1 MOZ_LOG="PlatformDecoderModule:5" firefox

[Child 145: Unnamed thread 0x7f899b1e8940]: D/PlatformDecoderModule Sandbox decoder rejects requested type
[Child 145: MediaPDecoder #1]: D/PlatformDecoderModule Initialising VA-API FFmpeg decoder
libva info: VA-API version 1.4.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/r600_drv_video.so
libva info: Found init function __vaDriverInit_1_4
libva info: va_openDriver() returns 0
[AVHWDeviceContext @ 0x7f899adbf440] Format 0x3231564e -> nv12.
[AVHWDeviceContext @ 0x7f899adbf440] Format 0x30313050 -> p010le.
[AVHWDeviceContext @ 0x7f899adbf440] Format 0x36313050 -> unknown.
[AVHWDeviceContext @ 0x7f899adbf440] Format 0x32315659 -> yuv420p.
[AVHWDeviceContext @ 0x7f899adbf440] Format 0x56595559 -> unknown.
[AVHWDeviceContext @ 0x7f899adbf440] Format 0x59565955 -> uyvy422.
[AVHWDeviceContext @ 0x7f899adbf440] Format 0x41524742 -> bgra.
[AVHWDeviceContext @ 0x7f899adbf440] Format 0x41424752 -> rgba.
[AVHWDeviceContext @ 0x7f899adbf440] Format 0x58524742 -> bgr0.
[AVHWDeviceContext @ 0x7f899adbf440] Format 0x58424752 -> rgb0.
[AVHWDeviceContext @ 0x7f899adbf440] VAAPI driver: Mesa Gallium driver 18.3.6 for AMD KAVERI (DRM 2.50.0, 4.19.0-12-amd64, LLVM 7.0.1).
[AVHWDeviceContext @ 0x7f899adbf440] Driver not found in known nonstandard list, using standard behaviour.
[Child 145: MediaPDecoder #1]: D/PlatformDecoderModule VA-API FFmpeg init successful
[Child 145: MediaPDecoder #1]: D/PlatformDecoderModule Choosing FFmpeg pixel format for VA-API video decoding.
[Child 145: MediaPDecoder #1]: D/PlatformDecoderModule Requesting pixel format VAAPI_VLD
[vp8 @ 0x7f899a96c800] Format vaapi_vld chosen by get_format().
[vp8 @ 0x7f899a96c800] Format vaapi_vld requires hwaccel initialisation.
[vp8 @ 0x7f899a96c800] No support for codec vp8 profile -99.
[vp8 @ 0x7f899a96c800] Failed setup for format vaapi_vld: hwaccel initialisation returned error.
[vp8 @ 0x7f899a96c800] Format vaapi_vld not usable, retrying get_format() without it.
[Child 145: MediaPDecoder #1]: D/PlatformDecoderModule Choosing FFmpeg pixel format for VA-API video decoding.
[Child 145: MediaPDecoder #1]: D/PlatformDecoderModule avcodec_send_packet error: -22
[Child 145: Unnamed thread 0x7f899b1e8940]: D/PlatformDecoderModule Sandbox decoder rejects requested type
[Child 145: MediaPDecoder #1]: D/PlatformDecoderModule Initialising VA-API FFmpeg decoder
libva info: VA-API version 1.4.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/r600_drv_video.so
libva info: Found init function __vaDriverInit_1_4
libva info: va_openDriver() returns 0
[AVHWDeviceContext @ 0x7f8999cc3ec0] Format 0x3231564e -> nv12.
[AVHWDeviceContext @ 0x7f8999cc3ec0] Format 0x30313050 -> p010le.
[AVHWDeviceContext @ 0x7f8999cc3ec0] Format 0x36313050 -> unknown.
[AVHWDeviceContext @ 0x7f8999cc3ec0] Format 0x32315659 -> yuv420p.
[AVHWDeviceContext @ 0x7f8999cc3ec0] Format 0x56595559 -> unknown.
[AVHWDeviceContext @ 0x7f8999cc3ec0] Format 0x59565955 -> uyvy422.
[AVHWDeviceContext @ 0x7f8999cc3ec0] Format 0x41524742 -> bgra.
[AVHWDeviceContext @ 0x7f8999cc3ec0] Format 0x41424752 -> rgba.
[AVHWDeviceContext @ 0x7f8999cc3ec0] Format 0x58524742 -> bgr0.
[AVHWDeviceContext @ 0x7f8999cc3ec0] Format 0x58424752 -> rgb0.
[AVHWDeviceContext @ 0x7f8999cc3ec0] VAAPI driver: Mesa Gallium driver 18.3.6 for AMD KAVERI (DRM 2.50.0, 4.19.0-12-amd64, LLVM 7.0.1).
[AVHWDeviceContext @ 0x7f8999cc3ec0] Driver not found in known nonstandard list, using standard behaviour.
[Child 145: MediaPDecoder #1]: D/PlatformDecoderModule VA-API FFmpeg init successful
[Child 145: MediaPDecoder #3]: D/PlatformDecoderModule Choosing FFmpeg pixel format for VA-API video decoding.
[Child 145: MediaPDecoder #3]: D/PlatformDecoderModule Requesting pixel format VAAPI_VLD
[vp8 @ 0x7f8999df7000] Format vaapi_vld chosen by get_format().
[vp8 @ 0x7f8999df7000] Format vaapi_vld requires hwaccel initialisation.
[vp8 @ 0x7f8999df7000] No support for codec vp8 profile -99.

[etc]...

Tested workaround (as in turning off acceleration)

media.ffvpx.enabled = true

Using Telavox web based SIP phone with FF

Need to spoof the user-agent to include "Chrome"

Install User-Agent switcher

Then add this to the “Custom Mode” configuration

{
  "app.telavox.com": "${userAgent} Chrome"
}

Now you also need to manually enable accepting calls

This is due to microphone permisssion not queryable

First make sure that you have allowed persistent access to microphone.
Then add the value registerSoftphone:“true” to the “Local Storage” for https://app.telavox.com

If you then go to “Settings | Phone and audio” you should see that “Receive incoming calls” is now enabled.

-=Zappa.CX=- Wiki

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