We have collected the most relevant information on V4l2-Ctl Audio_Sampling_Frequency. Open the URLs, which are collected below, and you will find all the info you are interested in.
Documentation:Modules/v4l2 - VideoLAN Wiki
https://wiki.videolan.org/Documentation:Modules/v4l2/
v4l2-stereo : Capture audio in stereo default value: enabled; v4l2-samplerate <integer> : Audio input sample rate in Hz default value: 48000; Tuner. v4l2-tuner <integer> : Tuner to use default value: 0; v4l2-tuner-frequency <integer> : Tuner frequency in Hz or MHz depending on the underlying v4l2 driver default value: -1; v4l2-tuner-audio-mode <integer> : Tuner audio mode …
1.10. Extended Controls — The Linux Kernel documentation
https://www.kernel.org/doc/html/v4.8/media/uapi/v4l/extended-controls.html
v4l2_mpeg_audio_sampling_freq_44100: 44.1 khz: v4l2_mpeg_audio_sampling_freq_48000: 48 khz: v4l2_mpeg_audio_sampling_freq_32000: 32 khz
v4l2-ctl man page - v4l-utils - General Commands | ManKier
https://www.mankier.com/1/v4l2-ctl
By default v4l2-ctl will directly access the V4L2 device, but with this option all access will go via this wrapper library. -h, --help. Prints the help message. --help-io. Prints the help message for all options that get/set/list inputs and outputs, both video and audio. --help-misc.
Auvidea B101 audio issues - Raspberry Pi Forums
https://forums.raspberrypi.com/viewtopic.php?t=260455
v4l2-ctl --list-ctrls User Controls audio_sampling_rate 0x00981980 (int) : min=0 max=768000 step=1 default=0 value=48000 flags=read-only audio_present 0x00981981 (bool) : default=0 value=1 flags=read-only Digital Video Controls power_present 0x00a00964 (bitmask): max=0x00000001 default=0x00000000 value=0x00000001 flags=read-only
V4l2-ctl - stm32mpu - STMicroelectronics
https://wiki.st.com/stm32mpu/wiki/V4l2-ctl
1 Overview []. v4l2-ctl is a V4L2 utility allowing to control the camera subsystem .It is based on V4L2 Linux kernel interface.. 2 Usage [] Board $> v4l2-ctl --help General/Common options: --all display all information available -C, --get-ctrl=<ctrl>[,<ctrl>...] get the value of the controls [VIDIOC_G_EXT_CTRLS] -c, --set-ctrl=<ctrl>=<val>[,<ctrl>=<val>...] set the value of the controls ...
linux/v4l2 – Gateworks
http://trac.gateworks.com/wiki/linux/v4l2
v4l2-ctl utility. The v4l2-ctl application from the v4l-utils package can be used to query or configure a v4l2 device. For complete information, including output resolutions etc , use the following: root@ventana:~# v4l2-ctl --device /dev/video3 --all # …
1.12. V4L2 Controls — The Linux Kernel documentation
https://www.kernel.org/doc/html/v4.10/media/kapi/v4l2-controls.html
V4L2 Controls — The Linux Kernel documentation. 1.12. V4L2 Controls. ¶. 1.12.1. Introduction. ¶. The V4L2 control API seems simple enough, but quickly becomes very hard to implement correctly in drivers. But much of the code needed to handle controls is actually not driver specific and can be moved to the V4L core framework.
debian - How can I change my webcam's power line frequency ...
https://unix.stackexchange.com/questions/581867/how-can-i-change-my-webcams-power-line-frequency-setting
v4l2-ctl --set-ctrl=power_line_frequency=1 If your webcam is not /dev/video0, add a -d /dev/videoN option with the correct number. The v4l2-ctl command comes in package v4l-utils, at least on Debian and related distributions. Also, v4l2-ctl -L will display a list of settings available in your webcam. It will also describe the available choices for settings like power line frequency.
Why use "v4l2-ctl" command get RAW data is alway ZERO at ...
https://forums.developer.nvidia.com/t/why-use-v4l2-ctl-command-get-raw-data-is-alway-zero-at-jetson-tx1-r28-2/60345
run this command ,disp as below: nvidia@tegra-ubuntu:~$ v4l2-ctl -d /dev/video0 --set-fmt-video=width=1920,height=1080,pixelformat=RG10 --set-ctrl bypass_mode=0 --stream-mmap --stream-count=1000 <<<<< 3.03 fps < 1.72 fps < 1.82 fps < 1.40 fps < 1.13 fps <<< 1.26 fps < 1.32 fps <<< 1.39 fps < 1.37 fps < 1.40 fps <<< 1.53 fps << 1.48 fps.
Jetson Linux API Reference: C:/Jenkins/workspace/doxy_l4t ...
https://docs.nvidia.com/jetson/l4t-multimedia/v4l2-controls_8h.html
#define v4l2_cid_mpeg_audio_sampling_freq (v4l2_cid_mpeg_base+100) Definition at line 209 of file v4l2-controls.h . #define V4L2_CID_MPEG_BASE ( V4L2_CTRL_CLASS_MPEG | 0x900)
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