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by jasonwzs
Mon Dec 14, 2015 3:58 am
Forum: Camera board
Topic: default width and height of image generated by raspistill
Replies: 4
Views: 1694

Re: default width and height of image generated by raspistil

Actually my Pi is not connected to any display device. I use ssh to connect to it and sometimes use vnc to get the X window.
by jasonwzs
Mon Dec 14, 2015 3:56 am
Forum: Camera board
Topic: Relationship between UV4L driver and official V4L2 driver
Replies: 10
Views: 2359

Re: Relationship between UV4L driver and official V4L2 drive

Thanks for your explaining!
by jasonwzs
Sat Dec 12, 2015 10:10 pm
Forum: Camera board
Topic: Relationship between UV4L driver and official V4L2 driver
Replies: 10
Views: 2359

Re: Relationship between UV4L driver and official V4L2 drive

Thanks for your answer!
Can you also confirm if my understanding below is correct?
4. raspstill/raspvid etc command lines and PiCamera python module will not use v4l driver, correct?
by jasonwzs
Sat Dec 12, 2015 9:54 pm
Forum: Camera board
Topic: Relationship between UV4L driver and official V4L2 driver
Replies: 10
Views: 2359

Re: Relationship between UV4L driver and official V4L2 drive

The UV4L driver will be loaded automatically at boot if the uv4l-raspicam-extras package is installed. If uv4l-raspicam-extras package is not installed, but I run the uv4l command like below: sudo uv4l -nopreview --auto-video_nr --driver raspicam --encoding h264 --width 640 --height 480 --framerate...
by jasonwzs
Sat Dec 12, 2015 9:44 pm
Forum: Camera board
Topic: Relationship between UV4L driver and official V4L2 driver
Replies: 10
Views: 2359

Re: Relationship between UV4L driver and official V4L2 drive

It depends on which device node your v4l2 application is accessing. The UV4L driver can be configured to register the first free device node found in the system starting from /dev/video0 on. This should be the default if you have the above package installed. So I can use uv4l to register /dev/video...
by jasonwzs
Sat Dec 12, 2015 8:10 pm
Forum: Camera board
Topic: Relationship between UV4L driver and official V4L2 driver
Replies: 10
Views: 2359

Relationship between UV4L driver and official V4L2 driver

What's the relationship between uv4l driver and official v4l2 driver for raspberry pi camera module? I installed uv4l driver on my raspi and I know there is an official v4l2 driver already bundled with raspbian. Questions: 1. Will these two drivers loaded automatically when Pi is booted? 2. Which dr...
by jasonwzs
Sat Dec 12, 2015 8:01 pm
Forum: Camera board
Topic: default width and height of image generated by raspistill
Replies: 4
Views: 1694

Re: default width and height of image generated by raspistil

Thanks for answering my question.
It's odd that when I use raspistill at the beginning it generates image of 640*480. Is it because I was not using some latest version of something?
by jasonwzs
Sat Dec 12, 2015 6:46 am
Forum: Camera board
Topic: default width and height of image generated by raspistill
Replies: 4
Views: 1694

default width and height of image generated by raspistill

When I run raspistill -o image.jpg for several days ago, I got image files of size 640*480 which is about 200K. Then I run some python codes which invoke picamera module in the past two days Today I run apt-get update and then installed uv4l driver according to http://www.linux-projects.org/modules/...

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