Linux UVC driver and tools

Introduction

Welcome to the USB Video Class Linux device driver home.

The goal of this project is to provide all necessary software components to fully support UVC compliant devices in Linux. This include a V4L2 kernel device driver and patches for user-space tools.

The USB Device Class Definition for Video Devices, or USB Video Class, defines video streaming functionality on the Universal Serial Bus. Much like nearly all mass storage devices (USB flash disks, external SATA disk enclosures, ...) can be managed by a single driver because they conform to the USB Mass Storage specification, UVC compliant peripherals only need a generic driver.

The UVC specification covers webcams, digital camcorders, analog video converters, analog and digital television tuners, and still-image cameras that support video streaming for both video input and output.

Due to the limited available man power and the broad scope of the UVC specification, the Linux UVC project will concentrate the development efforts on video input devices, especially webcams. Video output devices are supported in bulk mode only.

Support requests are handled through the Linux media development mailing list. Don't forget to read the FAQ before sending an e-mail to the list.

Status

The Linux UVC projects is currently focussing on kernel support for UVC devices. The driver implements the Video4Linux 2 (V4L2) API. Support for the deprecated V4L1 API will not be added.

The following table lists the UVC features supported by the Linux UVC driver.

UVC Feature Status Comments UVC 1.0 descriptors Yes UVC 1.1 descriptors Yes Camera input terminal Yes USB Streaming terminal Yes Processing unit Yes Selector unit Yes Extension unit Yes Extension units can be accessed directly or mapped to V4L2 controls. They require a user-space management tool. Button events Yes Button events are reported to userspace through a separate event device node, but require the video device node to be open. Control change events Yes Still image capture No Video streaming Yes Uncompressed payload Yes MJPEG payload Yes DV payload Yes MPEG-2 TS payload No Frame-based payload Yes Stream-based payload No

Supported devices

The table below lists known UVC devices. Other UVC compliant video input devices are very likely to be supported. If your UVC device is not listed below, please report it to the Linux media development mailing list.

Device works

Device works Device works with issues

Device works with issues Device is untested

Device is untested Device doesn't work

Device ID Name Manufacturer Status 0402:5606 USB 2.0 Camera (VIT D2010 notebooks) ALi Corporation [12] 0402:9665 1.3M WebCam (Acer Aspire AS7551-7442 notebooks) ALi Corporation 0408:030c HP Webcam (HP Pavilion DV6744 and DV6750) Quanta Computer 0408:2fb1 Laptop Integrated Webcam 2HDM (Dell XPS notebooks) Quanta Computer 0416:a91a LogiLink Wireless Webcam Windbond 041e:4057 Creative Live! Cam Optia Creative Labs 041e:4058 Creative Live! Cam Optia AF Creative Labs [18] 041e:4063 Creative Live! Cam Video IM Pro Creative Labs [7] 041e:4065 Creative Live! Cam Optia Pro Creative Labs 041e:406a Creative Live! Cam Notebook Ultra Creative Labs 041e:406b Creative Live! Cam Chat IM Creative Labs 041e:406c Creative Live! Cam Sync Creative Labs 041e:4071 Creative Live! Cam Vid. IM Ultra Creative Labs 041e:4080 Creative Live! Cam Socialize HD Creative Labs [16] 041e:4088 Creative Live! Cam Chat HD Creative Labs 0458:505e Genius iSlim 330 Genius 0458:7055 Genius iSlim 2020AF Genius 0458:705d Genius iSlim 2000AF Genius 0458:706e Genius eFace 2025 Genius 0458:7070 Genius FaceCam 310 Genius [13] 0458:7071 Genius iSlim 1300 V2 Genius 0458:707c Genius eFace 1300 Genius 0458:7081 Genius FaceCam 2000 Genius 045e:00f8 Microsoft LifeCam NX-6000 Microsoft 045e:0721 Microsoft LifeCam NX-3000 Microsoft 045e:074a Microsoft LifeCam VX-500 Microsoft 045e:075d Microsoft LifeCam Cinema Microsoft [13] 045e:076d Microsoft LifeCam HD-5000 Microsoft 045e:0770 Microsoft LifeCam VX-700 Microsoft 045e:0772 Microsoft LifeCam Studio Microsoft [13,15] 045e:0779 Microsoft LifeCam HD-3000 Microsoft 046d:0802 Logitech Webcam C200 Logitech 046d:0804 Logitech Webcam C250 Logitech 046d:0805 Logitech Webcam C300 Logitech 046d:0807 Logitech Webcam C500 Logitech 046d:0808 Logitech Webcam C600 Logitech 046d:0809 Logitech Webcam Pro 9000 Logitech 046d:080a Logitech Portable Webcam C905 Logitech 046d:0819 Logitech Webcam C210 Logitech 046d:081d Logitech Webcam C310 Logitech 046d:0821 Logitech Portable Webcam C910 Logitech 046d:0825 Logitech HD Webcam C270 Logitech 046d:0826 Logitech HD Webcam C525 Logitech 046d:082c Logitech HD Webcam C615 Logitech 046d:082d Logitech HD Pro Webcam C920 Logitech 046d:08c1 Logitech Quickcam Fusion Logitech [1,2] 046d:08c2 Logitech Quickcam Orbit/Sphere MP Logitech [1,2] 046d:08c3 Logitech Quickcam for Notebooks Pro Logitech [1,2] 046d:08c5 Logitech Quickcam Pro 5000 Logitech [1,2] 046d:08c6 Logitech Quickcam OEM Dell Notebook Logitech [1,2] 046d:08c7 Logitech Quickcam OEM Cisco VT Camera II Logitech [1,2] 046d:08c9 Logitech Quickcam Ultra Vision Logitech [1,2] 046d:08ca Logitech Quickcam Fusion (2006 model) Logitech [1,2] 046d:08cb Logitech Quickcam for Notebooks Pro (2006 model) Logitech [1,2] 046d:08cc Logitech Quickcam Orbit/Sphere MP (2006 model) Logitech [1,2] 046d:08ce Logitech Quickcam Pro 5000 (2006 model) Logitech [1,2] 046d:0990 Logitech Quickcam Pro 9000

Logitech Quickcam Pro 9000 for Business Logitech [6] 046d:0991 Logitech Quickcam Pro for Notebooks (2007 model)

Logitech Quickcam Pro for Notebooks for Business Logitech 046d:0992 Logitech Quickcam Communicate Deluxe Logitech 046d:0994 Logitech Quickcam Orbit/Sphere AF Logitech 046d:09a1 Logitech Quickcam Communicate MP/S5500

Logitech Quickcam Communicate MP for Business Logitech 046d:09a2 Logitech Quickcam Communicate Deluxe/S7500 Logitech 046d:09a4 Logitech Quickcam E 3500 Logitech 046d:09a5 Logitech Quickcam 3000 for Business Logitech 046d:09a6 Logitech Quickcam Vision Pro Logitech 046d:09b0 Acer OrbiCam (Acer notebooks) Logitech 046d:09b2 Fujitsu Webcam (Fujitsu-Siemens notebooks) Logitech [3] 046d:09c0 Quickcam for Dell Notebooks (Dell notebooks) Logitech [1,2] 046d:09c1 Logitech Quickcam Deluxe for Notebooks

Logitech Quickcam Deluxe for Notebooks for Business Logitech [1,2] 0471:0331 Philips SPC 1300NC Philips 0471:0332 Philips SPC 1000NC Philips 0471:0333 Philips SPC 620NC Philips 0471:0334 Philips SPC 520/525NC Philips 0471:2034 Philips SPC 530NC Philips 0471:2037 Philips SPC 1330NC Philips 0471:2038 Philips SPC 2050NC Philips 0471:20d0 Philips SPZ2000 Philips 0474:02da Sanyo Xacti HD2000 Sanyo Electric 0474:0722 Sanyo W33SA Sanyo Electric 0474:0b0e Sanyo VPC-CA102 Sanyo Electric 0489:d00a Traveler DC 8900 Schenker Inc. 04cb:014c Fujifilm FinePix A340 Fujifilm 04cb:016f Fujifilm FinePix S5500 Zoom Fujifilm 04cb:0172 Fujifilm FinePix E550 Fujifilm 04da:2318 Panasonic Camcorder NV-GS11/230/250 (webcam mode) Panasonic 04da:231a Panasonic Camcorder NV-GS11/230/250 (DV mode) Panasonic 04da:231d Panasonic Camcorder NV-GS27/37/320/500 (webcam mode) Panasonic 04da:231e Panasonic Camcorder NV-GS27/37/320/500 (DV mode) Panasonic 04f2:a133 Chicony USB 2.0 1.3MP UVC Camera (Maxell MaxCam MWC-1300D) Chicony Electronics 04f2:a13c HP KQ246AA 8.0MP Deluxe Webcam Chicony Electronics 04f2:a13e Panda 10C Chicony Electronics 04f2:a147 Medion P86004 2MP Webcam with Headset Chicony Electronics 04f2:b008 Chicony USB 2.0 Camera Chicony Electronics 04f2:b012 Chicony 1.3M UVC Webcam (Asus G1S notebooks) Chicony Electronics [3] 04f2:b013 Chicony USB 2.0 Camera (Lenovo 3000 N200 notebooks) Chicony Electronics 04f2:b015 Chicony VGA 24fps UVC Webcam (HP notebooks) Chicony Electronics 04f2:b016 Chicony VGA 30fps UVC Webcam (HP notebooks) Chicony Electronics 04f2:b018 Chicony 2M UVC Webcam (Compal notebooks) Chicony Electronics 04f2:b021 ViewSonic 1.3M, USB2.0 Webcam (ViewSonic VX2255WMB screens) Chicony Electronics [5] 04f2:b022 Gateway USB 2.0 Webcam (One C34xx notebooks) Chicony Electronics 04f2:b023 Gateway USB 2.0 Webcam (HP Pavilion DV9560EG notebooks) Chicony Electronics 04f2:b024 USB 2.0 Webcam (Packard Bell notebooks) Chicony Electronics 04f2:b027 Gateway USB 2.0 Webcam (Gateway T-1616 notebooks) Chicony Electronics 04f2:b029 USB 2.0 1.3M UVC WebCam (Asus F6S notebooks) Chicony Electronics 04f2:b033 USB 2.0 1.3M UVC WebCam (Asus M70VM notebooks) Chicony Electronics 04f2:b044 Acer CrystalEye webcam (Acer Aspire 5535 notebooks) Chicony Electronics 04f2:b062 CNF7045 (Packard-Bell notebooks) Chicony Electronics 04f2:b070 Toshiba Satellite L350D notebooks Chicony Electronics 04f2:b071 CNF7129 (Asus N10JA2 and EeePC 1000HE netbooks, K50IN notebooks) Chicony Electronics [3,14] 04f2:b073 CNF7231 (MSI MS-1722 ID1 notebooks) Chicony Electronics 04f2:b082 CKA7227 (HP EliteBook 2530p notebooks) Chicony Electronics 04f2:b083 CKF7063 (HP Compaq 6830s notebooks) Chicony Electronics 04f2:b084 Unnamed (Acer Aspire One D150) Chicony Electronics 04f2:b105 Lenovo EasyCamera (Lenovo IdeaPad Y530 notebooks) Chicony Electronics 04f2:b106 CNF7246 (Asus G71V notebooks) Chicony Electronics 04f2:b107 CNF7070 (HP 2133 notebooks) Chicony Electronics 04f2:b169 CNF8248 (Fujitsu Lifebook T731 notebooks) Chicony Electronics [3] 04f2:b1b9 (Asus U52F notebooks) Chicony Electronics [3] 04f2:b1bb (Asus N82JV notebooks) Chicony Electronics [3] 04f2:b1be USB2.0 0.3M UVC WebCam (Asus UL30JT notebooks) Chicony Electronics [3] 04f2:b1e5 USB2.0 0.3M UVC WebCam (Asus K25JC and K52De notebooks) Chicony Electronics [3] 04f2:b221 Integrated Camera (Lenovo Thinkpad T420s notebooks) Chicony Electronics 04f2:b230 HP HD Webcam [Fixed] (HP ??? notebooks) Chicony Electronics [3] 058f:3820 Future Boy PC USB Webcam (Alcor Micro AU3820 chipset) Alcor Micro 058f:a001 HP Webcam-101 (HP Pavilion g6 notebooks) Alcor Micro 05a9:2640 OmniVision OV2640 (Dell Inspiron 1420/1720 notebooks) OmniVision 05a9:2643 OmniVision Monitor Webcam (Dell SP2208WFP) OmniVision 05a9:2649 OmniVision Monitor Webcam (Dell SP2309W) OmniVision 05a9:264b Dell Studio Hybrid 140g OmniVision 05a9:7670 OmniVision OV7670 (Dell XPS m1330 notebooks) OmniVision 05ac:8502 Apple built-in iSight Apple [4] 05c8:0103 FO13FF-65 PC-CAM Foxlink 05c8:0403 HP Webcam [2 MP Fixed] (HP Mini 5103 netbook) Foxlink 05ca:181c Laptop Integrated Webcam FHD (Dell Latitude E6520 notebooks) Ricoh 05ca:18a1 Integrated Webcam (Dell Studio 1535 notebooks) Ricoh 05ca:18b7 Sony Visual Communication Camera (Sony VPCS12J1E notebooks) Ricoh 05e3:0505 BW Microscope GenesysLogic 064e:8100 Integrated Webcam 2M (Dell Vostro 1088 notebooks) SuYin 064e:a100 Acer OrbiCam (Acer notebooks) SuYin 064e:a101 Acer CrystalEye webcam (Acer notebooks) SuYin 064e:a102 Webcam (Acer Timeline 1810T notebooks) SuYin 064e:a103 Acer OrbiCam (Acer Aspire 7730ZG-343G32Mn notebooks) SuYin 064e:a110 HP Webcam (HP TX2000 notebooks) SuYin 064e:a111 USB 2.0 Camera (Datron TW7A notebooks) SuYin 064e:a116 USB 2.0 UVC 1.3M WebCam (Asus N20A notebooks) SuYin [3] 064e:a117 Acer HD Crystal Eye webcam (Acer 4930 notebooks) SuYin 064e:a118 Integrated Webcam (Dell Mini 9 netbooks) SuYin 064e:a136 USB 2.0 UVC 0.3M Webcam (Asus UL50VT netbooks) SuYin 064e:a219 UVC 1.3M Webcam (Acer Aspire 5745G notebooks) SuYin 064e:d101 Acer Crystal Eye webcam (Acer Aspire One AOA150-Ab netbooks) SuYin 064e:e201 Integrated Webcam (Lenovo Thinkpad Edge 13" notebooks) SuYin 064e:f209 HP Webcam (HP Pavillon DV7 4152EG notebooks) SuYin 06f8:3005 Hercules Dualpix Exchange Guillemot Corp. 06f8:3007 Hercules Dualpix Chat and Show Guillemot Corp. 06f8:300a Hercules Dualpix Infinite Guillemot Corp. 06f8:300c Hercules Classic Silver Guillemot Corp. 06f8:3017 Hercules HD Sunset Guillemot Corp. 06f8:301c Hercules Optical Glass/ Guillemot Corp. 06f8:3020 Hercules Webcam EC300 (Malata PC-81005 netbooks and clones) Guillemot Corp. 090c:37b3 Lenovo EasyCamera (Lenovo G560 notebooks) Silicon Motion 090c:b370 Silicon Motion SM370 Silicon Motion 090c:b371 Silicon Motion SM371 Silicon Motion 093a:2700 iSonic W002

A4Tech PK-635K

Digital Innovations 1.3MP Webcam Pixart Imaging 093a:2800 DealExtreme USB 2.0 Camera Pixart Imaging 093a:2900 Agama V-315 Pixart Imaging 0ac8:0336 Elecom UCAM-DLQ30 (Vimicro VC0336 chipset) Solid Years 0ac8:3313 TopSpeed USB 2.0 Camera B. Vimicro 0ac8:332d Vega USB 2.0 Camera (AOC screens and Techsolo TCA-4900) Vimicro 0ac8:3330 Sirius USB 2.0 Camera (Xinyi Y867 LCD Prince) Vimicro 0ac8:3343 Sirius USB 2.0 Camera (Fujitsu A6110 notebook) Vimicro 0ac8:3410 Venus USB 2.0 Camera (Minoru3D) Vimicro [8] 0ac8:3420 Venus USB 2.0 Camera (Tevion MD 85872 and Minoru3D) Vimicro [8] 0ac8:3450 A4Tech PK-333E A4Tech 0ac8:3460 Kodak Dual Webcamera Sakar Corp. 0ac8:3610 VMS-004D - 400x USB Microscope Veho [11] 0ac8:c302 Vega USB 2.0 Camera (Samsung Q45 notebook) Vimicro 0ac8:c303 Saturn USB 2.0 Camera (Samsung screens) Vimicro 0ac8:c315 HP Elite Autofocus Webcam Vimicro 0ac8:c338 Namuge 2MP Webcam Namuga 0bd3:0555 SPCAM SP620U 1/1.8" CCD 1600x1200 Ophir Optronics 0bda:56ff Rear Camera (Sony Vaio Multi-Flip SVF13N1L2E notebooks) Realtek 0bda:5801 Realtek 2SF022 (HP Pavillon DV7 4151SG notebooks) Realtek 0c45:62c0 Sonix USB 2.0 Camera (Acer Aspire 5050 and HP Pavilion DV6000 notebooks)

Trust SpotLight Webcam Pro

Centrios 1.3MP auto focus Sonix Technology 0c45:62e0 MSI Starcam Racer

Rosewill RCM-8163 Sonix Technology 0c45:62f1 Avatec CMA-L688

HueHD Sonix Technology

HueHD [11] 0c45:6310 USB 2.0 Camera (Trust Chat Webcam) Sonix Technology 0c45:6353 MyGear P20013 Film Scanner Sonix Technology [17] 0c45:63e0 Sonix Integrated Webcam (Dell notebooks) Sonix Technology 0c45:63ea Laptop Integrated Webcam 2M (Dell Studio 1555 notebooks) Sonix Technology 0c45:6409 USB 2.0 Camera (Nokia Booklet 3G netbooks) Sonix Technology 0c45:6415 Laptop Integrated Webcam 1.3M (Dell Inspiron 13z notebooks) Sonix Technology 0e8d:0004 MediaTek MT6227 phone MediaTek Inc 115b:1311 BSWHD05SBK iBuffalo 13d3:509b USB 2.0 Camera (Asus EeePC T91 netbooks) Genesys Logic Technology 13d3:5103 USB 2.0 Camera (Medion Akoya All-in-one PC) Sonix Technology 13d3:5122 USB 2.0 Camera (Asus NX90Jq and U33JC notebooks) Sonix Technology [3] 13d3:5130 USB 2.0 Camera (Asus K40AE, K50IE and K52JT notebooks) Sonix Technology [3] 13d3:5702 USB 2.0 UVC VGA WebCam (Asus Eee PC 1001PXD-EU17 netbooks) Azurewave 13d3:5710 USB 2.0 UVC VGA WebCam (Asus U31SD notebooks) Azurewave 13d3:5711 USB 2.0 UVC VGA WebCam (Asus EeePC 1015PX netbooks) Azurewave 145f:013e Trust Megapixel USB2 WB-5600R Trust 145f:013f Trust Megapixel USB2 Auto Focus Webcam Trust 145f:0142 Trust WB-6250X Webcam Trust 145f:015b Trust WB-8500X Webcam Trust 152d:0310 JMicron USB2.0 XGA WebCam JMicron 174f:1118 Syntek D-Max HP Webcam (HP Pavillon DV3 notebooks) Syntek 174f:5212 Syntek USB 2.0 UVC PC Camera (HP Spartan notebooks) Syntek 174f:5215 Syntek USB 2.0 UVC PC Camera (upcoming UMPC device) Syntek 174f:5271 Syntek USB 2.0 UVC PC Camera (upcoming UMPC device) Syntek 174f:5931 Syntek USB 2.0 UVC PC Camera (Samsung Q310 notebooks) Syntek 174f:5a11 Unknown (Asus A8Sc notebook) Unknown 174f:5a31 Sonix USB 2.0 Camera (Asus M50SV notebook) Sonix 174f:5a35 Sonix USB 2.0 Camera (Asus F3KE and G2S notebook) Sonix [3] 174f:8a12 Syntek USB 2.0 UVC PC Camera (Packard Bell Easynote MX52 notebooks) Syntek 174f:8a33 Syntek USB 2.0 UVC PC Camera (Asus U3S notebooks) Syntek 174f:8a34 Syntek USB 2.0 UVC PC Camera (JAOtech Smart Terminal) Syntek 177f:0060 Sweex WC060 Series HD Webcam 1778:0204 PEVO corp IPEVO Point 2 View 17dc:0202 Miricle 307K Thermoteknix 17ef:1004 Integrated Camera (Lenovo Thinkpad T61 notebooks) Lenovo 17ef:480b Integrated Camera (Lenovo SL400 and SL500 notebooks) Lenovo 17ef:481c Integrated Camera (Lenovo SL510 notebooks) Lenovo 1871:0101 Bresser Junior DigiMicro DM 400 Digital Microscope Bresser 1871:01f0 Aveo Technology USB 2.0 Camera Aveo Technology 1871:0306 Aveo Technology USB 2.0 Camera Aveo Technology 1871:7670 Aveo Technology USB 2.0 Camera Aveo Technology 18cd:cafe Pico iMage Ecamm 18ec:3188 Manta MM-353 Plako ArkMicro 18ec:3288 FSC WebCam V30S ArkMicro [9] 18ec:3290 USB 2.0 PC Camera (Sabrent WCM-6LNV) ArkMicro 18ec:3299 USB 2.0 PC Camera (model number QC3231) ArkMicro 199e:8101 DFx 21BU04 ImagingSource 19ab:1000 Bodelin ProScope HR Bodelin 19ab:1020 Bodelin ProScope HR2 Bodelin 19b4:0104 Celestron Digital Microscope Imager Celestron 19ff:0102 Dynex 1.3MP Webcam Dynex 1b3b:2951 MSI StarCam 370i Unknown 1bcf:2809 Laptop Integrated Webcam FHD (Dell Vostro 3550 notebooks) Sunplus 1c4f:3000 SiGma Micro USB Web Camera SiGma Micro 1cac:a332 Kinstone C8 webcam (Vimicro chipset) Kinstone 1cac:b288 Kinstone C18 webcam (Sonix chipset) Kinstone 1e4e:0100 USB 2.0 Camera Etron Technologies [10] 1e4e:0102 USB 2.0 Camera Etron Technologies 22b8:6006 Motorola MOTOROKR E6 Motorola 2935:0001 Magewell XI100DUSB-HDMI Magewell 5986:0100 Acer OrbiCam (Acer notebooks) Bison Electronics 5986:0101 USB2.0 Camera (Packard Bell Easynote SJ notebooks) Bison Electronics 5986:0102 Acer Crystal Eye webcam (Acer TravelMate 7720 notebooks) Bison Electronics 5986:0200 Acer OrbiCam (Acer notebooks) Bison Electronics 5986:0202 Bison (Fujitsu-Siemens Amilo SI2636 notebooks) Bison Electronics 5986:0203 Bison (Advent 4211 and MSI Wind notebooks) Bison Electronics 5986:0205 Lenovo EasyCamera (Lenovo N500 and U330 notebooks) Bison Electronics [9] 5986:0241 Bison (MSI Wind Top AE1900 nettop) Bison Electronics [15] 5986:0314 BisonCam, NB Pro (MSI Wind U135DX netbook) Bison Electronics 5986:0343 BisonCam, NB Pro (Clevo P150HM notebook) Bison Electronics 5986:0548 Front Camera (Sony Vaio Multi-Flip SVF13N1L2E notebooks) Acer eb1a:2571 eMPIA 27xx based camera (unbranded) eMPIA Technology eb1a:2761 eMPIA 2761 based camera (unbranded) eMPIA Technology eb1a:2771 eMPIA 2771 based camera (Intelbras iPlug notebook) eMPIA Technology eb1a:299f Supereyes Borescope eMPIA Technology

First and second generation Logitech webcams suffer from firmware bug which make the camera somehow unstable. As the issue is timing-related, the exact impact of the bug on a particular user can't be predicted. If you plan to buy a Logitech webcam, consider getting one of the models not affected by the bug. More information about the issue, including possible workarounds, are available on the QuickCam Team website.

Starting at version 2.6.22, the Linux kernel includes a USB audio bug fix which triggers a (possibly identical to the above) bug in first and second generation Logitech webcams. See the Linux UVC wiki for a workaround.

This camera module is known to be mounted upside-down in some notebooks. Applications that use the libv4l library should display the video correctly, as libv4l detects upside-down cameras and rotates the image automatically. See Hans de Goede's post on the linux-uvc-devel mailing list for more information. For applications that don't use libv4l, try holding your computer upside-down.

iSight webcams require a proprietary firmware that can't be redistributed. Tools to extract the firmware from the MacOS X driver and load it into the device are available at http://bersace03.free.fr/ift/.

Video corruption has been noticed when the camera is connected to a USB 1.1 controller. For better performances, connect the camera to a USB 2.0 controller.

Some revisions of this model suffer from issues similar to those described in [1]. Only specific part numbers are affected. See Logitech UVC devices list for more information.

Creative Labs released at least two different devices under the Live! Cam Video IM Pro model name. While the one listed in this table is UVC compatible, the other(s) might not be. If in doubt, check the webcam USB product ID.

Resolutions below 640x480 might only work at the full 30fps frame rate.

This Device ID is known to be used by several different webcams among which at least one is currently not supported by the driver. If you plan to buy this camera make sure it matches the product name.

The camera has been reported not to work when connected to a USB 1.1 hub.

Those cameras claim to have a true 1.3MP or 2MP CMOS sensor, but the highest resolution reported by the UVC descriptors is 640x480.

Recent versions of the device use UVC as a façade. They talk a vendor-specific protocol with a vendor-provided Windows driver, and trying to handle them with the UVC protocol results in low frame rate and corrupted frames in most resolutions. Device BCD 1.00 is known to be affected, BCD 0.02 seems to work.

Despite being able to work with lower USB bandwidths, this device always requests the maximum possible bandwidth, even for the MJPEG format. Using one of those cameras in conjunction with another USB device (including the camera internal microphone) will likely fail. You can tell the uvcvideo driver to estimate the required bandwidth instead of trusting the camera by setting the FIX_BANDWIDTH quirk. This will only affect uncompressed formats, and even there there's no guarantee of success. See the FAQ for more information.

The camera severely underexpose images under low-light conditions when using any frame rate other than the default (which also happens to be the maximum), probably because auto-exposure is only enabled at the default or maximum frame rate. The RESTRICT_FRAME_RATE quirk has been added to the driver to ignore all non-default frame rates.

Some versions of this camera have been reported to randomly time out or stall in response to valid UVC control requests, probably as a result of a race condition bug in the camera firmware. This can sometime lead to the camera failing to be recognized by the kernel. Little can be done to fix the problem.

At least some versions of this camera severely overexpose images when the manual exposure control is set to a value other than 2500 divided by an exponent of 2. Auto-exposure isn't affected.

Full-resolution scans are only possible through still image capture, which the uvcvideo driver doesn't support yet.

This camera might have issues with USB auto-suspend on Linux kernels between v2.3.37 and v3.5 (inclusive). See the FAQ for more information.

Download

Linux 2.6.26 and newer includes the Linux UVC driver natively. You will not need to download the driver sources manually unless you want to test a newer version or help with development.

Source code for the Linux UVC kernel driver is maintained in a GIT repository on linuxtv.org.

If you are an end-user the easiest way to retrieve an up-to-date driver is to clone the media build git repository located at http://git.linuxtv.org/media_build.git. The code includes support for older kernel versions, but might lag behind the uvcvideo git repository by a few days. Instructions to build and install drivers from the linuxtv.org trees are available on linuxtv.org.

If you are a developer, or if you're interested in tracking the Linux UVC driver, you probably want to get a local copy of the source code repository. To help save bandwidth, please follow these instructions: git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git uvcvideo cd uvcvideo git remote add uvcvideo git://linuxtv.org/pinchartl/uvcvideo.git git remote update git checkout -b uvcvideo-master uvcvideo/uvcvideo-next

The old SVN repository has been archived and isn't available on the SVN server anymore. The repository archive can be downloaded here.

Documentation

UVC-specific parts of the driver API are documented in the Linux kernel tree starting at version 2.6.38, in Documentation/video4linux/uvcvideo.txt. Older kernel versions implemented a different API that is now deprecated and scheduled for removal in 2.6.39.

If you're upgrading from a pre-2.6.38 kernel, you should upgrade your userspace UVC tools. Instructions to install the latest uvcdynctrl tool are available from the QuickCam Team website. Standard V4L2 applications do not need to be upgraded.

More (mostly outdated) information can be found in the unofficial wiki.

For kernel developers, the USB Video Class specification is available on the USB Implementers Forum website.