The out put of "v4l2-ctl -d /dev/video0 -l"
User Controls
brightness 0x00980900 (int) : min=-64 max=64 step=1
default=0 value=0
contrast 0x00980901 (int) : min=0 max=64 step=1
default=32 value=32
saturation 0x00980902 (int) : min=0 max=128 step=1
default=67 value=67
hue 0x00980903 (int) : min=-40 max=40 step=1
default=0 value=0
white_balance_automatic 0x0098090c (bool) : default=1 value=1
gamma 0x00980910 (int) : min=72 max=150 step=1
default=110 value=110
gain 0x00980913 (int) : min=0 max=80 step=1
default=0 value=0
power_line_frequency 0x00980918 (menu) : min=0 max=2 default=2
value=2 (60 Hz)
white_balance_temperature 0x0098091a (int) : min=2800 max=6500 step=1
default=4600 value=4600 flags=inactive
sharpness 0x0098091b (int) : min=0 max=6 step=1
default=3 value=3
backlight_compensation 0x0098091c (int) : min=0 max=2 step=1
default=1 value=1
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Touch seeded packages, which is subscribed to v4l-utils in Ubuntu.
https://bugs.launchpad.net/bugs/2063828
Title:
v4l-utils failed to flip upside down webcam.
Status in v4l-utils package in Ubuntu:
New
Bug description:
About a year ago (June 2023) I can flip my upside down webcam using
LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libv4lconvert.so.0 <webcam_app>.
But now, It's no longer works. When I launch webcam app (e.g cheese or
snapshot), it's always upside down, whether I use LD_PRELOAD or not.
My machine is an Asus laptop (Asus PRO36S / U36SD) and my webcam is
Asus Integrated Webcam from Chicony Electronics Co.
This is the output of "lsusb | grep Webcam" :
Bus 002 Device 004: ID 04f2:b1b9 Chicony Electronics Co., Ltd Asus
Integrated Webcam.
- I'm using Ubuntu Noble / 24.04.
- The version of v4l-utils package is 1.26.1-4build3.
- I expect the library from v4l-utils will flip my upside down webcam using
LD_PRELOAD.
- What I get is the library from v4l-utils won't flip my upside down webcam.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: v4l-utils 1.26.1-4build3
ProcVersionSignature: Ubuntu 6.8.0-31.31-generic 6.8.1
Uname: Linux 6.8.0-31-generic x86_64
ApportVersion: 2.28.1-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: unknown
Date: Fri Apr 26 18:16:57 2024
SourcePackage: v4l-utils
UpgradeStatus: No upgrade log present (probably fresh install)
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