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4K Ultra HD Webcam Varifocal HD 5-50mm Lens USB Mini Web Camera 3840X2160@30fps USB with Camera Sony IMX317 Sensor Camera,USB UVC Zoom Conference Webcam for Mac/Window/Linux/Raspberry Pi 4.2 out of 5 stars 7. Mac Chrome OS Linux Android Update driver in Windows Windows Since Jiusion microscopes use a standard webcam chipset, they will automatically install default webcam (UVC) drivers when plugged into a host device. They can be used with any webcam apps. User can select one or more to install. The result is that some UVC 1.5 devices that also support UVC 1.1 work correctly. OS X OS X ships with a UVC driver included since version 10.4.3, updated in 10.4.9 to work with iChat. Windows Windows XP has a class driver for USB video class 1.0 devices since Service Pack.
Apple's Mac OS X includes drivers for USB Video Device Class (UVC) cameras, which means that most webcams, including the Xbox Live Vision, are just plug and play without needing to install any specialist drivers. However, the Apple provided webcam software Photo Booth doesn't allow any control over things like the exposure, gain, or frames per second (FPS), which are quite important in astrophotography. And it only captured at 640 × 426 pixels. So what can we do about this?I would like to use a particular UVC webcam, the Xbox Live Vision, USB identifiers 0x045e 0x294, but most of the problems below are down to trying to use Mac OS X for webcam astrophotography.
What I would like is either a more sophisticated web camera app for the Mac that allows access to these settings and record images or movies with them, or a way of changing the settings at the driver level for all applications. That seems to be what Max Grosse set out to do in Feb 2010, write an alternative Mac UVC camera driver, which he released in March 2010. The code is in his SVN repository, so I took a look:
svn co http://svn.ioctl.eu/mac_uvc/trunk/mac_uvc
The last revision was from Nov 2010, and there doesn't seem to be any instructions which would have been on Max's website but that page was lost in an upgrade. However, I could find a uvc_mac wiki snapshot from March 2010 which included important details like the code is released under the free zLib-License, was still considered unstable, and the API likely to change. Folder uvc/ contains the uvc.framework, while UVCCap/ contains a very basic sample application (Cocoa) that uses the framework to render the video stream. There is also a third folder, UVCCap_Old
Where next? Perhaps macam will assist me - I had a look on the list of web cameras supported in macam for the Xbox Live Vision camera (which I'm hooking up to my telescope). Sadly the Xbox Live Vision isn't supported in macam, just via UVC. I tried anyway, but neither it nor two other USB webcams I had seem to show up in the macam v0.9.2 application. Issue logged.
Maybe I should just spend some more money tracking down a Phillips SPC900NC which should work in macam? It would probably make life easier as this is quite a popular webcam for astrophotography, so other people have posted recommended settings etc.
Reading the CloudyNights post on Webcam Astrophotography on the Mac there are also commercial webcam drivers from IOXperts, but they seem quite old - even support for Mac OS X 10.5 Leopard is currently in beta - and they don't seem to support the Xbox webcam anyway.
On the image capture side, I've downloaded Nebulosity 2 (free demo mode), but it doesn't seem to support any USB web cameras. Likewise their free mini-app, Craterlet for Mac only handles some firewire cameras.
Microsoft Uvc Video Device Driver Windows 10
I've also downloaded Equinox Pro 7 (free demo mode), which do a lot of stuff but go to the menu 'Connect', 'Webcam' (or Apple+Shift+W) and it seems to work with my webcam - and has some sort of exposure controls. This looks promising in that I could record some movies where Jupiter was not too washed out, which seemed to be the typical result using Photo Booth. Also it only recorded QuickTime movies at 640 × 480 pixels (VGA, better than just 640 × 426 with Photo Booth), both only managing up to 10 FPS at these light levels.
However, running under Linux on my elderly old laptop, wxAstroCapture version 1.8-1 (the 23 Oct 2010 beta) offers to connect to the Xbox Live Vision at resolutions of 320×240, 352× 288, 640 × 480, 960 × 720 and 1280 × 960 pixels (YUYV). It lets me turn off auto-exposure and set the gain and shutter speed manually. It lets me adjust the gamma, brightness and try to set the frames per second (FPS) - although unsurprisingly that seems to be limited according to the image size.
It looks like life would be easier for image capture if I switched to Windows or Linux.. maybe there is a role for my elderly old Linux laptop yet?
Update
I found a nice little command line app for capturing webcam frames under Mac OS X called ImageSnap, but it doesn't seem to have any code for controlling the image settings.
There currently is no way to change the exposure, gain, etc. .. via the QTKit Capture APIs (duplicate rdar://5760371 'Ability to set brightness, gain, etc. for cameras in QTKit Capture API' if you'd like this functionality). – Brad Larson, 15 March 2011
Hello All,
I am working on a USB Video Class (UVC) compliant device, and noticed some strange issues with UVC enumeration on Mac OS. I am currently running Sierra 10.12.1 on a Macbook Air 13' mid-2011 edition.
Often (~25-50% of the time), UVC class-specific enumeration is not completed. I have been testing with the device my company is creating, and as a control, an industry-standard UVC-compliant device (Logitech C920) and observed similar results. These are both USB composite devices, consisting of USB audio class (microphone, and optionally speaker) and USB video class (camera) components.
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Uvc Driver For Mac Os High Sierra
In all cases, the audio (UAC) functionality is properly enumerated when the device is plugged in. This is presumably because this is central to the operating system, and needs to be made available in the system sound preferences.
The video (UVC) functionality, however, is a different story. This is not enumerated until a camera application is executed, but fairly often, the video enumeration is just not initiated by the host. I have found somewhat better results when the USB device is plugged in prior to opening the camera application, but either way the video device is available significantly less than 100% of the time.
Yes, sometimes the user will have to unplug and re-plug the UVC device less than a few times in order to restore the camera functionality, but regardless the end-user experience seems rather poor for these class-compliant devices that are supposed to be supported by the USB driver that ships with Mac OS. I have tested with many applications - Photobooth, Quicktime, Facetime, Skype, Zoom, and Hangouts..all exhibited the same issue, so my presumption is that this is a bug in the UVC host driver in the operating system itself.
Uvc Camera Driver Download
It's possible that I have missed something - I haven't really found a good way to see what's going on inside this version of Mac OS during the enumeration process. All I can see from my protocol analyzer is that sometimes the UVC function is initialized when the camera application starts, and sometimes it is not. Any advice on how I can gather more info on what is happening would be greatly appreciated!
Where next? Perhaps macam will assist me - I had a look on the list of web cameras supported in macam for the Xbox Live Vision camera (which I'm hooking up to my telescope). Sadly the Xbox Live Vision isn't supported in macam, just via UVC. I tried anyway, but neither it nor two other USB webcams I had seem to show up in the macam v0.9.2 application. Issue logged.
Maybe I should just spend some more money tracking down a Phillips SPC900NC which should work in macam? It would probably make life easier as this is quite a popular webcam for astrophotography, so other people have posted recommended settings etc.
Reading the CloudyNights post on Webcam Astrophotography on the Mac there are also commercial webcam drivers from IOXperts, but they seem quite old - even support for Mac OS X 10.5 Leopard is currently in beta - and they don't seem to support the Xbox webcam anyway.
On the image capture side, I've downloaded Nebulosity 2 (free demo mode), but it doesn't seem to support any USB web cameras. Likewise their free mini-app, Craterlet for Mac only handles some firewire cameras.
Microsoft Uvc Video Device Driver Windows 10
I've also downloaded Equinox Pro 7 (free demo mode), which do a lot of stuff but go to the menu 'Connect', 'Webcam' (or Apple+Shift+W) and it seems to work with my webcam - and has some sort of exposure controls. This looks promising in that I could record some movies where Jupiter was not too washed out, which seemed to be the typical result using Photo Booth. Also it only recorded QuickTime movies at 640 × 480 pixels (VGA, better than just 640 × 426 with Photo Booth), both only managing up to 10 FPS at these light levels.
However, running under Linux on my elderly old laptop, wxAstroCapture version 1.8-1 (the 23 Oct 2010 beta) offers to connect to the Xbox Live Vision at resolutions of 320×240, 352× 288, 640 × 480, 960 × 720 and 1280 × 960 pixels (YUYV). It lets me turn off auto-exposure and set the gain and shutter speed manually. It lets me adjust the gamma, brightness and try to set the frames per second (FPS) - although unsurprisingly that seems to be limited according to the image size.
It looks like life would be easier for image capture if I switched to Windows or Linux.. maybe there is a role for my elderly old Linux laptop yet?
Update
I found a nice little command line app for capturing webcam frames under Mac OS X called ImageSnap, but it doesn't seem to have any code for controlling the image settings.
There currently is no way to change the exposure, gain, etc. .. via the QTKit Capture APIs (duplicate rdar://5760371 'Ability to set brightness, gain, etc. for cameras in QTKit Capture API' if you'd like this functionality). – Brad Larson, 15 March 2011
Hello All,
I am working on a USB Video Class (UVC) compliant device, and noticed some strange issues with UVC enumeration on Mac OS. I am currently running Sierra 10.12.1 on a Macbook Air 13' mid-2011 edition.
Often (~25-50% of the time), UVC class-specific enumeration is not completed. I have been testing with the device my company is creating, and as a control, an industry-standard UVC-compliant device (Logitech C920) and observed similar results. These are both USB composite devices, consisting of USB audio class (microphone, and optionally speaker) and USB video class (camera) components.
Uvc Camera Driver Windows 10
Uvc Driver For Mac Os High Sierra
In all cases, the audio (UAC) functionality is properly enumerated when the device is plugged in. This is presumably because this is central to the operating system, and needs to be made available in the system sound preferences.
The video (UVC) functionality, however, is a different story. This is not enumerated until a camera application is executed, but fairly often, the video enumeration is just not initiated by the host. I have found somewhat better results when the USB device is plugged in prior to opening the camera application, but either way the video device is available significantly less than 100% of the time.
Yes, sometimes the user will have to unplug and re-plug the UVC device less than a few times in order to restore the camera functionality, but regardless the end-user experience seems rather poor for these class-compliant devices that are supposed to be supported by the USB driver that ships with Mac OS. I have tested with many applications - Photobooth, Quicktime, Facetime, Skype, Zoom, and Hangouts..all exhibited the same issue, so my presumption is that this is a bug in the UVC host driver in the operating system itself.
Uvc Camera Driver Download
It's possible that I have missed something - I haven't really found a good way to see what's going on inside this version of Mac OS during the enumeration process. All I can see from my protocol analyzer is that sometimes the UVC function is initialized when the camera application starts, and sometimes it is not. Any advice on how I can gather more info on what is happening would be greatly appreciated!
Hopefully this is something that has been noticed and is being fixed. I will also look into following the formal bug reporting process, but it's probably a good idea to get some input from the community before taking that next step. Is anyone else seeing this? Does anyone know a good way I can log what is happening for the bug report?
Thanks in advance,
Chris
