# Raspberry Pi 4 + DietPi: no /dev/video\* with dtoverlay=rpivid-v4l2 on 6.12.62+rpt kernel (Moonlight HW decode)
**URL:** https://dietpi.com/forum/t/raspberry-pi-4-dietpi-no-dev-video-with-dtoverlay-rpivid-v4l2-on-6-12-62-rpt-kernel-moonlight-hw-decode/24988
**Category:** Troubleshooting
**Tags:** raspberry-pi-4
**Created:** [19 February 2026 03:55 UTC](https://dietpi.com/forum/t/raspberry-pi-4-dietpi-no-dev-video-with-dtoverlay-rpivid-v4l2-on-6-12-62-rpt-kernel-moonlight-hw-decode/24988 "2026-02-19T03:55:25Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@nooz](https://dietpi.com/forum/u/nooz)
#### Post date: [19 February 2026 03:55 UTC](https://dietpi.com/forum/t/raspberry-pi-4-dietpi-no-dev-video-with-dtoverlay-rpivid-v4l2-on-6-12-62-rpt-kernel-moonlight-hw-decode/24988/1 "2026-02-19T03:55:25Z")
###
- DietPi version | DietPi v10.0.1
- Distro version | trixie
- Kernel version | Linux DockerPi 6.12.62+rpt-rpi-v8 #1 SMP PREEMPT Debian 1:6.12.62-1+rpt1 (2025-12-18) aarch64 GNU/Linux
- Architecture | arm64
- SBC model | RPi4
- Power supply used | RPi PSU
- SD card used | SSD
* * *
Raspberry Pi 4 + DietPi: no `/dev/video*` with `dtoverlay=rpivid-v4l2` on 6.12.62+rpt kernel (Moonlight HW decode)
Hi all,
I’m trying to get V4L2 hardware video decoding working on a Raspberry Pi 4 running DietPi so I can use Moonlight with hardware decode. Moonlight itself is fine, but the system has no V4L2 decoder devices at all, so there’s nothing for Moonlight (or FFmpeg) to use.
## Environment
- Device: Raspberry Pi 4 (4GB)
- OS: DietPi (64‑bit, aarch64)
- Kernel:
```auto
uname -a
Linux DockerPi 6.12.62+rpt-rpi-v8 #1 SMP PREEMPT Debian 1:6.12.62-1+rpt1 (2025-12-18) aarch64 GNU/Linux
```
## Current boot config
Relevant part of my `/boot/config.txt`:
```auto
#-------GPU memory splits-------
gpu_mem=256
arm_64bit=1
dtoverlay=disable-wifi
dtoverlay=vc4-kms-v3d
dtoverlay=rpivid-v4l2
# HDMI
hdmi_group=1
hdmi_mode=16 # 1080p60 CEA
disable_overscan=1
```
Same `dtoverlay=rpivid-v4l2` line appears in `/boot/firmware/config.txt` as well.
## Symptoms
Despite the above:
```auto
bash
ls -l /dev/video*
ls: cannot access '/dev/video*': No such file or directory
dmesg | grep -Ei 'rpivid|bcm2835-codec|v4l2'
# (no output)
v4l2-ctl --list-devices
# (no output)
```
Trying to inspect the expected decoder nodes fails as there are none:
```auto
bash
v4l2-ctl -d /dev/video10 --all
Cannot open device /dev/video10, exiting.
v4l2-ctl -d /dev/video11 --all
Cannot open device /dev/video11, exiting.
```
Moonlight is being launched directly from a TTY via a system service (not inside Docker), so this isn’t a container device‑mapping issue.
## What I’ve checked
Kernel config and overlays:
```auto
bash
zgrep RPIVID /proc/config.gz 2>/dev/null || echo "no RPIVID options in kernel config"
no RPIVID options in kernel config
ls /boot/firmware/overlays/rpivid*
ls: cannot access '/boot/firmware/overlays/rpivid*': No such file or directory
```
So it looks like:
- The current `6.12.62+rpt-rpi-v8` kernel has **no RPivid options built in**.
- The firmware set does **not ship `rpivid-v4l2.dtbo`** either.
That would explain why `dtoverlay=rpivid-v4l2` is effectively a no‑op and why no `/dev/video*` devices appear.
## Questions
1. On current DietPi for Raspberry Pi, is RPivid/V4L2 hardware decoding intentionally removed from the 6.12.x `+rpt` kernels?
2. What is the _recommended_ way (on DietPi) to get a kernel/firmware combo that **does** provide RPivid and the corresponding overlay?
I’d like to keep the rest of this DietPi install as‑is and just use whatever kernel/firmware path you recommend to get `/dev/video10/11/12` back for V4L2 hardware decoding.
Happy to provide any additional logs or try test kernels if needed. I used AI to help draft this post and it seems accurate, but apologies for any errors. Thanks!
---
### Author:  [@Joulinar](https://dietpi.com/forum/u/Joulinar)
#### Post date: [19 February 2026 06:23 UTC](https://dietpi.com/forum/t/raspberry-pi-4-dietpi-no-dev-video-with-dtoverlay-rpivid-v4l2-on-6-12-62-rpt-kernel-moonlight-hw-decode/24988/2 "2026-02-19T06:23:58Z")
We from DietPi team don’t maintain the kernel. It’s the original one from RPi foundation.
---
### Author:  [@Jappe](https://dietpi.com/forum/u/Jappe)
#### Post date: [19 February 2026 13:23 UTC](https://dietpi.com/forum/t/raspberry-pi-4-dietpi-no-dev-video-with-dtoverlay-rpivid-v4l2-on-6-12-62-rpt-kernel-moonlight-hw-decode/24988/3 "2026-02-19T13:23:51Z")
Did you activate RPI-codecs with `dietpi-config`?
On my RPi4 I get
```auto
root@RPi4:~# uname -a
Linux RPi4 6.12.62+rpt-rpi-v8 #1 SMP PREEMPT Debian 1:6.12.62-1+rpt1 (2025-12-18) aarch64 GNU/Linux
root@RPi4:~# ls -l /dev/video*
crw-rw---- 1 root video 81, 1 17. Jan 23:00 /dev/video10
crw-rw---- 1 root video 81, 2 17. Jan 23:00 /dev/video11
crw-rw---- 1 root video 81, 3 17. Jan 23:00 /dev/video12
crw-rw---- 1 root video 81, 4 17. Jan 23:00 /dev/video18
crw-rw---- 1 root video 81, 0 17. Jan 23:00 /dev/video19
crw-rw---- 1 root video 81, 5 17. Jan 23:00 /dev/video31
root@RPi4:~# dmesg | grep -Ei 'rpivid|bcm2835-codec|v4l2'
[4.907422] bcm2835-codec bcm2835-codec: Device registered as /dev/video10
[4.907452] bcm2835-codec bcm2835-codec: Loaded V4L2 decode
[4.912592] bcm2835-codec bcm2835-codec: Device registered as /dev/video11
[4.912618] bcm2835-codec bcm2835-codec: Loaded V4L2 encode
[4.915395] bcm2835-codec bcm2835-codec: Device registered as /dev/video12
[4.915422] bcm2835-codec bcm2835-codec: Loaded V4L2 isp
[4.917129] bcm2835-codec bcm2835-codec: Device registered as /dev/video18
[4.917154] bcm2835-codec bcm2835-codec: Loaded V4L2 image_fx
[4.919334] bcm2835-codec bcm2835-codec: Device registered as /dev/video31
[4.919361] bcm2835-codec bcm2835-codec: Loaded V4L2 encode_image
root@RPi4:~# v4l2-ctl --list-devices
bcm2835-codec-decode (platform:bcm2835-codec):
/dev/video10
/dev/video11
/dev/video12
/dev/video18
/dev/video31
rpi-hevc-dec (platform:rpi-hevc-dec):
/dev/video19
/dev/media0
bcm2835-codec (vchiq:bcm2835-codec):
/dev/media1
```
I don’t use `rpivid-v4l2` nor `vc4-kms-v3d` tho, you don’t need it for decoding support
```sh
root@RPi4:~# grep dtoverlay /boot/config.txt
dtoverlay=disable-wifi
dtoverlay=argonone
```
For moonlight `/dev/video10` (comes from `bcm2835-codec`) should be enough
### edit:
I just found out `rpivid-v4l2` is deprecated, `bcm2835-codec` + `rpi-hevc-dec` stack is the way to go.
---
### Author:  [@system](https://dietpi.com/forum/u/system)
#### Post date: [17 August 2026 01:23 UTC](https://dietpi.com/forum/t/raspberry-pi-4-dietpi-no-dev-video-with-dtoverlay-rpivid-v4l2-on-6-12-62-rpt-kernel-moonlight-hw-decode/24988/4 "2026-08-17T01:23:51Z")
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