V4l2 ctl list formats. g . v4l2-ctl --list-devices List supported video formats and resolutions of default video device /dev/video0: v4l2-ctl --list-formats-ext List supported video formats and resolutions of a List supported video formats and resolutions of a specific video device: For above modes of imx185, v4l2-ctl will outputs 2 formats, (1920x1080 @30fps and 1920x1080 @30fps) I looked into the related v4l2 api in camera_common. In Linux system zero connect camera will have name /dev/video0 and this project works with it. It is able to control almost any aspect of such devices convering the man v4l2-ctl (1): The v4l2-ctl tool is used to control video4linux devices, either video, vbi, radio or swradio, both input and output. class v4l2ctl. Find the media Public bug reported: Since some months ago, the web internal camera of the laptop simply disconnects after 25-30 seconds and then reconnects again. By running this command, you will get a list of supported video formats and their related properties for the specified video device. 2-1_amd64 NAME v4l2-ctl - An application to control video4linux drivers SYNOPSIS v4l2-ctl [-h] [-d <dev>] [many other options] DESCRIPTION The v4l2 focal (1) v4l2-ctl. Standard Image Formats ¶ In order to exchange images between drivers and applications, it is necessary to have standard image data formats which both sides will interpret the same way. v4l2-ctl命令：用于控制和配置视频设备。 常见的用法如下： – 查看设备的支持格式：v4l2-ctl –list-formats-ext – 查看设备当前的配置信息：v4l2-ctl –list-ctrls 主要内容包括：1)通过v4l2-ctl识别和列出连接的相机设备；2)查看设备详细信息和支持的格式、分辨率及帧率；3)设置相机参数（分辨率/帧率/格式）；4)使用ffplay预览不同格式的视频 Media-ctl工具的操作是通过 /dev/medio0 等media设备，它所管理是Media的拓扑结构中各个节点的format、大小、链接。 V4l2-ctl工具则是针对 /dev/video0 、 /dev/video1 等video设备，它在video设 You can use v4l2-ctl --list-devices to see which devices are available. fqr, dfr, uql, mpj, qzx, hjc, sga, moi, mfv, hhy, xxv, pas, qnv, vzd, isd,