#StackBounty: #camera Zooming bye using the volume buttons

Bounty: 50

I have a P30pro phone and this Bluetooth camera shutter. The shutter had dedicated buttons for zooming.
enter image description here

Sadly the volume buttons on the P30 act just acts as a shutter (the zooming buttons on the shutter just send the volume buttons signals too) and there is no customization option in the built-in mobile app to set them for zooming.

Is there any workaround? Any app that can be installed to take photos instead of the factory app?


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#StackBounty: #projections #perspective #camera Project grid on 2d plane based on camera perspective

Bounty: 100

Unsure if this is the right network to post this, but maybe someone can help…

I’m working on a personal project where, with the help of AI, I want to automatically estimate the perspective of a given image.

I’ve been able to programatically estimate and draw the position of the horizon, as seen below. This is based on how "quickly" cars farther away shrink in the image.

enter image description here

Not sure the above is useful, but now I want to draw a grid on the plane. Something like:

enter image description here

This is where it’s getting too complicated for me. I have no idea how to solve this. Not the drawing per se, but the mathematics behind it. Any ideas?


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#StackBounty: #root-access #camera #hardware #images #front-camera Taking pictures/videos from both front and rear camera simultaneously?

Bounty: 50

There are apps that can do this but they are not exactly Bothie. The app allows the user to first take a picture from rear camera and then from the front camera (but not simultaneously). Nokia first came up with this idea in 2017.
More about Bothie

I am just wondering if this is a hardware feature or software. I can handle the software issue(with root) i think. And if this is not possible then can you please explain why and how it works (totally optional)?
Because if this is possible then people will be able to take videos from both cameras (poor cameraman will also be included in the clip).. and that would be pretty cool IMO =)

Every little opinion or googling is accepted. Thanks in advance : )


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#StackBounty: #root-access #camera #hardware #images #front-camera Is it possible to take pictures/videos from both front and rear came…

Bounty: 50

There are apps that can do this but they are not exactly Bothie. The app allows the user to first take a picture from rear camera and then from the front camera (but not simultaneously). Nokia first came up with this idea in 2017.
More about Bothie

I am just wondering if this is a hardware feature or software. I can handle the software issue(with root) i think. And if this is not possible then can you please explain why and how it works (totally optional)?
Because if this is possible then people will be able to take videos from both cameras (poor cameraman will also be included in the clip).. and that would be pretty cool IMO =)

Every little opinion or googling is accepted. Thanks in advance : )


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#StackBounty: #android #camera #video-recording Video recording app for Android that can record without audio while on a phone call

Bounty: 50

If on a phone call on a Samsung Galaxy S9+, I can only take pictures but not record video from the camera (NOT screen recording). I have no desire to capture the audio, but I would like to be able to take a video without audio while on the call. Is there an app which does this? Ideally from a reputable developer. Paid is fine.


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#StackBounty: #audio #camera #microphone Plugging in webcam microphone causes sound to stop working

Bounty: 50

Back a few months ago when COVID started, I got myself a USB webcam (this one, to be specific). I found the fact that you have to plug it into the audio jack to be a little annoying, but otherwise it worked fine. Back then I was running Windows 10.

Recently I switched to Linux Mint (Ulyana Cinnamon, if it’s any help). When I try to use my webcam the video works, but my computer’s audio stops working for the duration of having the webcam plugged in. I think the computer is getting the microphone input mixed up with sound output, but I’m not sure. My computer has no other microphones or webcams (it’s a desktop), so I would appreciate it if y’all could help me resolve this quickly.

EDIT: You might want to zoom your browser out before viewing the pictures, they are a bit large.

Debug output from terminal:

$ arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC3234 Analog [ALC3234 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 2: ALC3234 Alt Analog [ALC3234 Alt Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

$ lspci | grep Audio
00:1f.3 Audio device: Intel Corporation 200 Series PCH HD Audio

Sound/Output in settings without microphone plugged in:

Sound/Output without microphone plugged in

Sound/Output with microphone plugged in:

Sound/Output with microphone plugged in

Sound/Input without microphone plugged in:

Sound/Input without microphone plugged in

Sound/Input with microphone plugged in (1):

enter image description here

Sound/Input with microphone plugged in (2):

enter image description here


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#StackBounty: #adb #camera Making the front camera the main one, or disabling the main (back) camera

Bounty: 50

My device’s rear (main) camera is broken.

WhatsApp Web pairing uses the main camera in order to scan a QR code and can’t be switched to the front (selfie) one.

Is there any ADB command that can switch the roles of Main and Front cameras? this way, the front will be activated by WhatsApp and I’ll be able to scan the QR code.

Alternatively is there an ADB command that disables the main camera altogether? since that might also do the trick.

I’m with Android 10 with latest security updates (Android One).


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#StackBounty: #drivers #18.04 #hp #webcam #camera HP Truevision HD built-in webcam not working in ubuntu 18.04

Bounty: 500

I have a HP Notebook-15-ac603tu and after shifting to ubuntu from windows, the camera stopped working.

I have run the following commands with output:

  • lsusb :
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 042: ID 0bda:57d6 Realtek Semiconductor Corp. 
Bus 001 Device 003: ID 0bda:b006 Realtek Semiconductor Corp. 
Bus 001 Device 002: ID 25a7:fa23  
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  • v4l2-ctl –list-devices :
HP Truevision HD: HP Truevision (usb-0000:00:14.0-5):
    /dev/video0
  • ls -ltr /dev/video* :
crw-rw----+ 1 root video 81, 0 Mar 22 11:59 /dev/video0
  • cheese :
(cheese:6397): Gtk-WARNING **: 12:11:18.227: Theme parsing error: cheese.css:7:35: The style property GtkScrollbar:min-slider-length is deprecated and shouldn't be used anymore. It will be removed in a future version

** (cheese:6397): CRITICAL **: 12:11:18.789: cheese_preferences_dialog_on_source_change: assertion '_tmp2_ > ((guint) 0)' failed

(cheese:6397): cheese-CRITICAL **: 12:11:18.789: cheese_camera_device_get_name: assertion 'CHEESE_IS_CAMERA_DEVICE (device)' failed

(cheese:6397): GLib-CRITICAL **: 12:11:18.790: g_variant_new_string: assertion 'string != NULL' failed

(cheese:6397): GLib-CRITICAL **: 12:11:18.790: g_variant_ref_sink: assertion 'value != NULL' failed

(cheese:6397): GLib-GIO-CRITICAL **: 12:11:18.790: g_settings_schema_key_type_check: assertion 'value != NULL' failed

(cheese:6397): GLib-CRITICAL **: 12:11:18.790: g_variant_get_type_string: assertion 'value != NULL' failed

(cheese:6397): GLib-GIO-CRITICAL **: 12:11:18.790: g_settings_set_value: key 'camera' in 'org.gnome.Cheese' expects type 's', but a GVariant of type '(null)' was given

(cheese:6397): GLib-CRITICAL **: 12:11:18.791: g_variant_unref: assertion 'value != NULL' failed

** (cheese:6397): CRITICAL **: 12:11:18.791: cheese_preferences_dialog_setup_resolutions_for_device: assertion 'device != NULL' failed

** (cheese:6397): CRITICAL **: 12:11:20.317: cheese_preferences_dialog_on_source_change: assertion '_tmp2_ > ((guint) 0)' failed

(cheese:6397): cheese-CRITICAL **: 12:11:20.318: cheese_camera_device_get_name: assertion 'CHEESE_IS_CAMERA_DEVICE (device)' failed

screenshot of cheese displaying black screen

I tried almost everything and I don’t know how to proceed further (basically am a noob user). Please help me out in working my webcam.


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#StackBounty: #android #video #photography #camera Camera app which allows enhanced visualization of imperfections via real-time filters

Bounty: 50

Is there a camera app for Android which allows for real time (not post-save) filters which adjust contract, levels, curves, performs equalize (like in Photoshop), or otherwise which could help visualize imperfections in objects which may not have been easily noticeable by the naked eye on casual inspection. For example, two slightly different shades of paint, stains, etc.


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