For question regarding video and photography capture using a computer with the necessary accessory or connecting an external camera to it.
Questions tagged [camera]
423 questions
68
votes
3 answers
How do ultra-high-frame-rate cameras write so fast?
Recording at 1080p and 100,000 FPS for 1 second in the ProRes 422 codec uses up 73.2 gigabytes of storage. (SOURCE)
How do ultra-high-speed cameras write to SD cards at such quick speeds, like 580.56 gigabits per second? Before writing, the footage…
clickbait
- 980
50
votes
7 answers
Apps don't show up in camera and microphone privacy settings in MacBook
I cannot allow camera and microphone of my macbook pro to be used in different applications (Google Chrome, Slack etc.) as they do not appear in “System Preferences -> Security & Privacy -> Microphone/Camera”.
Since, there are no apps and no way to…
loadbox
- 657
43
votes
6 answers
Capture RTSP stream from IP Camera and store
I've got a few IP Cameras which output an RTSP (h264 mpeg4) stream.
Hitting the URL locally via VLC:
rtsp://192.168.0.21:554/mpeg4
I can stream the camera and dump to disk (on my desktop). I'd like to however store these files on my NAS (FreeNAS).…
Keerthi
- 531
21
votes
4 answers
Can I use a Canon SX 30 camera as webcam?
Can I use my Canon SX 30 as my web cam?
I have come along a lot of tutorials and videos telling us how to do this using ZoomBrowser that is shipped along with the camera. But it seems that canon sx 30 is not compatible with it. Is there any other…
user87890
- 211
18
votes
2 answers
Is it possible to set a default camera device to show screen instead of the output of an actual, physical camera?
I am using Windows 10 and on many websites etc. It asks permission to use your camera, which points to your default camera in Windows. I was wondering if there was a way to setup that default camera to show your actual Windows screen, instead of the…
17
votes
3 answers
Why do only 2 USB cameras work while 4 USB cameras cannot stream at once?
I have 4 480p USB 2.0 cameras. Any idea why I can't stream 4 feeds at once?
I am using a VL817 USB hub for all the cameras. It seems not the problem of bandwidth as the average frame size for one camera is 600kb 30fps.
Any idea why it is limited…
tszkin lee
- 179
17
votes
6 answers
Software to clean up photos of whiteboards and documents?
I take a lot of photos of whiteboards, blackboards, and so on for teaching purposes (examples online through May 2010). I'm interested in cleaning them up for archival purposes, preferably using Linux. Commercial products ClearBoard and PhotoNote…
Norman Ramsey
- 2,904
16
votes
5 answers
Stop LifeCam HD-5000 from constantly changing focus
My LifeCam HD-5000 camera is constanly changing focus, while capturing video. Nothing can stop it.
Is it possible to disable the autofocus feature or to make it more tolerant?
Demonstration: http://www.youtube.com/watch?v=olxAl12Z1MA
Even it can't…
Dims
- 13,414
14
votes
1 answer
Windows 10: What is the Microsoft "App Connector" and why would it want/need access to my camera?
I just got one of my laptops installed with Windows 10 and noticed that some applications like "App Connector", "Microsoft Edge", and "OneNote" were set to use the laptop camera.
The text in the settings for this says that "Some apps need access to…
user100487
- 564
13
votes
6 answers
How can I take a picture with my built-in laptop camera with Windows 7?
In Windows XP, My Computer showed me cameras as devices that I could use to take pictures or videos without any third-party software.
How can I do the same in Windows 7?
Nathan Fellman
- 9,662
12
votes
1 answer
Google Chrome not able to identify my webcam
Chrome has suddenly stopped accessing my camera. Whenever I go to a website that tries to use my camera, I see a text that says camera : none available
When I go to media settings, I see that Chrome is not able to detect my camera, though the…
Hardik Juneja
- 221
12
votes
5 answers
Why are the bottom half of my images gray?
My brother in law took some pictures for me of my daughter after she was born.
When I open up the pictures or look at the previews, they all look like this (with the bottom half gray):
At first I thought that the images were just corrupted, but…
Vaccano
- 6,806
11
votes
3 answers
Can I use my DSLR as webcam through gphoto2 + v4l2loopback?
So, what i'm trying to do may be a little complicated, by i'm finding my way.
Let me explain the basics:
1 - I have an DSLR camera and i want to use it as webcam (but v4l2 can't make a /dev/videoX device with it, so no internet application can use…
user2934303
- 261
11
votes
2 answers
Which application is currently using my camera on Windows 10?
I have an A4Tech camera on Windows 10. It hasn't got an in-your-face led as such to indicate it's on. I just noticed a blue haze but wasn't sure if it was a reflection or if the camera was on. I used Zoom to confirm it was on and, it turned off…
Rohit Gupta
- 5,096
9
votes
1 answer
Can I stream multiple GoPro 3 cameras to a Linux computer?
I didn't know whether this was a camera question, a linux question, or a networking question. Please feel free to move or request to move this question as necessary.
I want to capture the video footage from multiple GoPro Hero 3's and record them to…
puk
- 717