motioneye-project/motioneye

motioneye not applying v4l2 config settings

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#2,300 opened on Feb 26, 2022

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 (10 comments) (0 reactions) (0 assignees)Python (3,533 stars) (636 forks)batch import
help wantedquestion

Description

I was trying to adjust the exposure settings for the camera I am using.

when doing

v4l2-ctl -c exposure_auto=1 (for manual mode)
v4l2-ctl -c exposure_absolute=20

the picture looks perfectly fine. but when i try to set the same setting in the "Video Device" menu in motioneye is simply doesn't change anything.

After changing the setting in the webinterface v4l2-ctl -L does not reflect the changes which i assume it should if they were applied correctly, right?

The other settings also seem to be kinda buggy. sometimes they apply, sometimes they don't and I can't really see a pattern here. Anyone one have any idea what is wrong here?

Contributor guide

Tech stack
python
Domain
backend
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Basic knowledge of v4l2 ctlUnderstanding of motioneye's configuration system
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
35
Research direction
Review the motioneye source code, specifically the handling of v4l2 settings in the configuration files. Look at the relevant Python files that parse and apply video device options (likely in the config module or motionController). Check issue #2300 comments for any hints or partial analysis. Investigate whether the settings are correctly written to the motion config file or if there is a parsing error.