Archived:Main Page-V4L

Welcome to the video4linux wiki (For DVB wiki, click here)

This wiki is designed to serve as a community focus and the resource of reference for users and developers of the Video4Linux framework. In the short term, the task is to document the operation and quirks of hardware supported by v4l applications, to complement and offload the v4l mailing list -- cf. searchable archives. We are also encouraging developers to turn this site into a repository of knowledge about v4l, helping to ensure that expertise acquired through much hard labor and long dedication won't get lost, but can be passed on to new developers and keep free software thriving. If you are a user looking for help, please try searching the mailing list archives first, before asking a question on the v4l mailing list. You may also be able to get immediate help on the #v4l irc channel on irc.freenode.net -- hopefully someone there will be able to help you! Don't leave your question on the wiki -- ask on the mailing list! The wiki will only be as useful as we make it. Every user of video4linux has something to contribute, and we encourage you to begin right away. Whatever you can contribute will be warmly appreciated, whether it is a set of instructions for how to get a certain card working, a report on the audio and video quality of a working card, suggestions for how to extend an existing driver or write a new one, or an explanation of the internal logic of v4l itself. To keep these instructions free, all contributions to this wiki are automatically licensed under the GNU General Public License GPL. If you wish, you may specify in each case that your contribution is dual-licensed under the MIT License. Please help us keep spam away by signing in before you post. Enjoy! The v4l wiki team To make a contribution, please begin by familiarizing yourself with the layout of the site, so that your contribution will end up in the right location. As the site grows, it takes increasing discipline to keep it from turning into a tangle. We want to aggregate information about available hardware, v4l experiences, HOWTOs, and technical information about the workings of v4l devices work, and it's up to each of us to do this in a way that makes the information easy to access -- a useful and well-organized resource for everyone interested in video4linux.

Technical Background Video4linux APIs TV Encyclopedia Analog TV Digital TV PCI interface chipsets used for v4l cards GPIO pins i2c Protocol Radio Data System (RDS) Developer Section How to build from v4l CVS How to write good problem report How to submit patches Anatomy of a v4l device Anatomy of a v4l driver How to add support for a new card TODO - main tasks Maintaining the CVS tree Kernel Development Kernel rules to submit patches Kernel rules to submit drivers Kernel Coding Style Index of Documentation for People Interested in Writing and/or Understanding the Linux Kernel dev news Applications v4l watching v4l recording v4l capturing text capture v4l-based Example Setups Home brews MythTV

Supported Hardware Tuners Hardware vs software encoders v4l card vendors TV cards and drivers Video via PCI List survey of cards in use now bttv devices (bt848, bt878) alternating field capture btaudio (bt878) saa7134 devices (saa713x) saa7146 devices cx88 devices (cx2388x) ivtv devices (cx23415, cx23416) zoran devices (zr36057, zr36067) zoran devices (zr36120, zr36125) Video via USB USBVideo Request support for USB Video devices Em2820 USBVision devices DiBcom USB devices OmniVision USB devices (OV511, etc) H&B TX-100 analog to digital video converter Other devices Radios Webcams Scanners Loopback Digitisers Peripherals for v4l Antennas Remote controllers v4l Links

Category:LinuxTV