OpenCV中文网站

 找回密码
 立即注册

QQ登录

只需一步,快速开始

搜索
热搜: 安装 配置
查看: 889|回复: 0

arm+linux+qt+opencv通过videocapture调用uvc免驱相机,...

[复制链接]
发表于 2019-5-22 14:34:29 | 显示全部楼层 |阅读模式
1.通过终端:v4l2-ctl --list-devices
        显示:/dev/video0
                 /dev/video1

显示两个设备,其实只接一个相机,这里猜测可能是两个视频格式。

2.通过qt配置opencv,调用vedio0,帧率只有10,通过videocapture.set()修改相机参数无效。

3.调用vedio1,出现错误:
(beta_camera:1360): GStreamer-CRITICAL **: 06:07:22.668:

Trying to dispose element videoconvert0, but it is in PAUSED instead of the NULL state.

You need to explicitly set elements to the NULL state before

dropping the final reference, to allow them to clean up.

This problem may also be caused by a refcounting bug in the

application or some element.
VIDEOIO ERROR:V4l2:could not obtain specifics of capture window。/dev/video1 does not support memory mapping

回复

使用道具 举报

您需要登录后才可以回帖 登录 | 立即注册

本版积分规则

手机版|OpenCV中文网站  

GMT+8, 2019-10-24 07:50 , Processed in 0.041345 second(s), 16 queries .

Powered by Discuz! X3.4

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表