Help answer threads with 0 replies.
Go Back > Forums > Linux Forums > Linux - Newbie
User Name
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!


  Search this Thread
Old 02-14-2006, 03:41 PM   #1
LQ Newbie
Registered: Sep 2005
Posts: 9

Rep: Reputation: 0
v4l and device driver


I have recently shifted to linux and I am making a frame grabbing application that grabes image from webcam (Logitech Quickcam 400pro). My question is generic. what is video4linux actually? I went to webpage of v4l . But I am in doubt about what exactly v4l is. I understand it is a set ofAPIs but it is mentioned on those webpages that it is also a driver. Also, I am looking at source code of camstream which uses V4l API. It includes linux/videodev.h and linux/videodev2.h in which v4l data structures etc are declared(or defined).

So, my understanding is that frame grabbing application calls v4l APIs and the device driver should provide implementation of those APIs. Corret me if I am wrong.

Old 02-14-2006, 04:05 PM   #2
Senior Member
Registered: Jun 2004
Location: Chicago
Distribution: Slackware64 -current
Posts: 1,158

Rep: Reputation: 61
Look here



Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
How to read a v4l loopback device? rylan76 Linux - Hardware 0 01-16-2006 01:04 PM
Device driver from 2.4 to 2.6 setu_garg Programming 1 09-16-2005 11:27 AM
V4L: "cat /dev/video0: no such device"; to be sure not supported? jago25_98 Linux - Hardware 1 01-27-2005 04:04 PM
bttv tuner - Novideo on v4L device bruce1271 Linux - Hardware 3 02-09-2004 09:14 PM
device driver rjc915 Programming 4 10-06-2003 11:43 AM > Forums > Linux Forums > Linux - Newbie

All times are GMT -5. The time now is 10:32 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration