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linux - Can v4l2 be used to read audio and video from the ...
https://stackoverflow.com/questions/917060/can-v4l2-be-used-to-read-audio-and-video-from-the-same-device
Most of the cheap v4l2 capture card's audio is only an analog pass through with a volume control requiring a jumper to capture the audio via the sound card's line input. Share Improve this answer answered Dec 24 '09 at 19:53 wkulecz 1 1 …
v4l2-ctl - how to handle multiple input supported camera ...
https://forums.developer.nvidia.com/t/v4l2-ctl-how-to-handle-multiple-input-supported-camera-such-as-cctv/72404
v4-ctl --get-inputs It shows. Video Input : 2 (Camera : Ok) v4l2-ctl --list-input; ioctl: VIDIOC_ENUMINPUT Input : 0 Name : HDMI Type : 0x00000000 Audioset : 0x00000000 Tuner : 0x00000000 Standard : 0x0000000000000000 Status : 0x00000000 (ok) Capabilities: 0x00000000 (not defined)
camera - V4L2 : control setting + software trigger - Stack ...
https://stackoverflow.com/questions/62593870/v4l2-control-setting-software-trigger
The nvidia developers have expanded the set of controls for v4l2. You need to look at the tegra-v4l2-camera.h file. For example for exposure, the definition will be TEGRA_CAMERA_CID_EXPOSURE. Share. Follow this answer to receive notifications. edited Sep …
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 Prints the help message for miscellaneous options. --help-overlay
Documentation:Modules/v4l2 - VideoLAN Wiki
https://wiki.videolan.org/Documentation:Modules/v4l2/
These options do not apply to audio streams in compressed data. v4l2-adev < string > : Audio input device default value: "". v4l2-audio-method < integer > : Allowed audio input methods (bitmask: 1 for OSS, 2 for ALSA) default value: 3. v4l2-stereo : Capture audio in stereo default value: enabled. v4l2-samplerate < integer > : Audio input sample ...
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