Unable to start the recording helper process

[Sersys]

Hello,

I'm using OBS on Debian Testing. Everything worked fine until a recent update. I keep getting this error message when I hit start recording: "Unable to start the recording helper process. Check that OBS files have not been blocked or removed by any 3rd party antivirus / security software." Log reads:

13:54:02.716: [FFmpeg VAAPI encoder: 'advanced_video_recording'] settings:
13:54:02.716: device: /dev/dri/by-path/pci-0000:0e:00.0-render
13:54:02.716: rate_control: CBR
13:54:02.716: profile: 100
13:54:02.716: level: -99
13:54:02.716: qp: 0
13:54:02.716: bitrate: 2500
13:54:02.716: maxrate: 2500
13:54:02.716: keyint: 120
13:54:02.716: width: 3072
13:54:02.716: height: 1728
13:54:02.716: b-frames: 0
13:54:02.716: ffmpeg opts:
13:54:02.716:
13:54:02.723: ---------------------------------
13:54:02.723: [FFmpeg aac encoder: 'Track1'] bitrate: 160, channels: 2, channel_layout: stereo
13:54:02.723:
13:54:02.723: ---------------------------------
13:54:02.723: [FFmpeg aac encoder: 'Track2'] bitrate: 160, channels: 2, channel_layout: stereo
13:54:02.723:
13:54:02.724: [ffmpeg muxer: 'adv_file_output'] Failed to create process pipe

If I try to hit it again this happens:

13:55:51.929: encoder 'advanced_video_recording': Cannot apply a new video_t object after the encoder has been initialized
13:55:51.929: encoder 'advanced_video_recording': Cannot set the scaled resolution after the encoder has been initialized
13:55:51.929: encoder 'advanced_video_recording': Cannot enable GPU scaling after the encoder has been initialized
13:55:51.930: [ffmpeg muxer: 'adv_file_output'] Failed to create process pipe

Operating System: Debian GNU/Linux 12
KDE Plasma Version: 5.27.11
KDE Frameworks Version: 5.115.0
Qt Version: 5.15.13
Kernel Version: 6.10.6-amd64 (64-bit)
Graphics Platform: Wayland
Processors: 24 × AMD Ryzen 9 7900X 12-Core Processor
Memory: 62.0 GiB of RAM
Graphics Processor: AMD Radeon RX 7900 XT
Manufacturer: ASUS

ffmpeg version 7.0.2-3

What is recording helper process and is there a way to start it manually?
Do I need to chmod some files?
Is this an FFmpeg issue?
Do I need to roll back the kernel?

 

[Sersys]

The flatpak version still works. Only the debian repo version does not it seems like.

 

[chrisaga]

The issue still exists on Ubuntu 24.04. It looks like an Ubuntu package issue.

To solve this :

• You can install the official obsproject package form it's PPA (from OBS's download instructions : https://obsproject.com/download )

~~~
sudo add-apt-repository ppa:obsproject/obs-studio
sudo apt update
sudo apt install ffmpeg obs-studio
obs
~~~
NOTE: obsproject's package solves another issue with obs crashing when attempting to open the property popup of a V4L2 source

• Or if you want to stick with the Ubuntu package, you can manually solve the issue. OBS seems to look for `obs-ffmpeg-mux` in the same directory of it's own binary which is `/usr/bin/obs`. For whatever reason it's installed in `/usr/lib/x86_64-linux-gnu/obs-plugins/obs-ffmpeg` by the Ubuntu package.

~~~
cd /usr/bin
sudo ln -s /usr/lib/x86_64-linux-gnu/obs-plugins/obs-ffmpeg/obs-ffmpeg-mux .
obs
~~~