V9 plays far better than H264 on Pi 4

ARM Technical Assistance
1

Both on Chromium and MPV player I get a lagging video playback while playing h264 videos while V9 is somehow super-cool.
I also installed xf86-video-fbturbo-git and restarted my device.
Do I need to set any flag on chromium to get better h264 video performance or give any option to ffmpeg while playing h264 videos ?
I’ve got the GPU clock set to 750Mhz and vc4-fkms-v3d,cma-384 set for dtoverlay.

2

Does it actually play better using v9?

3

Yes, it does.

4

i’m using a rpi400.
i’m currently using manjaro minimal+gnome40 wayland, firefox is my browser.
i do also have a manjaro xfce4 setup on another usb drive.

here’s my config.txt
# See /boot/overlays/README for all available options

arm_freq=2000
over_voltage=6
gpu_mem=24
initramfs initramfs-linux.img followkernel
kernel=kernel8.img
arm_64bit=1
disable_overscan=1

#enable sound
dtparam=audio=on
hdmi_drive=2

#enable vc4
dtoverlay=vc4-kms-v3d
max_framebuffers=2
disable_splash=1
5

might have to test this out.

So I install xf86-video-fbturbo-git and add it to the dtoverlay?

6

i don’t use xf86-video-fbturbo-git cause it forces llvmp instead of the v3d driver.
llvmp is a software driver, v3d is a hardware driver.

check firefox about:support see what it’s using.

7