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. Don't leave your question on the wiki -- ask on the mailing list! For immediate help, log on to the #v4l irc channel on irc.freenode.net a try (see the log) -- hopefully someone there will be able to help you! 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! People behind V4L 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 Analog TV Digital TV PCI interface chipsets used for v4l cards GPIO pins i2c Protocol Radio Data System (RDS) Developer Section How to write a good problem report How to add support for a new card How to build from v4l Mercurial How to submit patches Maintaining mercurial trees TODO - main tasks Anatomy of a v4l device Anatomy of a v4l driver Kernel Development Rules for submitting patches Rules for submitting drivers Coding Style Documentation index Master v4l development repository v4l-dvb experimental repository Current git log Userspace Development V4L2 Userspace library Applications TV Viewing TV Recording Streaming Text capture (Teletext/Closed Captioning) v4l Links

Supported Hardware Tuners Audio Decoders 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) btaudio (bt878) cx88 devices (cx2388x) ivtv devices (cx23415, cx23416) Matrox Meteor II cards (not working) saa713x devices saa7134-alsa saa7146 devices zoran devices (zr36057, zr36067) zoran devices (zr36120, zr36125) Video via PCI Express nGene devices (not supported) saa7162 devices (not yet supported) Video via USB USBVideo Request support for USB Video devices DiBcom USB devices Em2820 (USB Analog only) Em2880 (USB Analog+DVB-T) OmniVision USB devices (OV511, etc) TM6000 based devices USBVision devices Graphics cards with TV Tuner and/or Capture facilities ATI/AMD based combo cards NVIDIA based combo cards Other devices Radios Remote controllers Webcams Scanners Loopback

Category:LinuxTV