B4J Question B4J USB camera module

[TomKluz]

I am thinking about small project with usb camera module. Does anyone has any experience in this case ?
I didn't found much here. Thank you very much for any answer. TomKluz

 

[teddybear]

Perhaps the module is what you want.

 

[TomKluz]

Thank you for answer. I have seen this thread but it has in title 'Web camera library'.
Is it usefull also for usb cam ?

 

[teddybear]

Thank you for answer. I have seen this thread but it has in title 'Web camera library'.
Is it usefull also for usb cam ?

Yes, it is. why not try it?

 

[TomKluz]

Can You imagine ! Works !
I have made a picture from my internal laptop camera !
Obviously now I has to learn how to use this library but maybe after buying an external camera.
Thank you so much. TomKLuz

 

[teddybear]

You should thank @peacemaker for providing the module.

 

[TomKluz]

I will do it right now, but thank you again for pointing me @peacemaker work.
All the best in 2025.

 

[peacemaker]

My work was just one in the chain

Web Camera?

Hi, Is it possible to take picture from webcamera? Thanks!

www.b4x.com

[Class] Webcam Capture

The goal of this class is to control a webcam. There is a free software project called Webcam Capture (Generic Webcam Java API). The data of the author of this API are: Bartosz Firyn. Web GitHub This class directly accesses to some functions of the Webcam Capture Api. Instructions: 1. Copy...

www.b4x.com

 

[TomKluz]

Hi. I have got 1MP usb camera module with resolution up to 1280x720 and using such simple soft like AMCap it is possible to switch on all available options. Unfortunately using an example published by Peacemaker it is not possible. The only available options are 320x240 and 640x480. When taking any other I am getting immediately an error within SarxosWebcam library.
May I ask you to tell me if I am doing something wrong ? Have any of you had similar problems ?

 

[peacemaker]

Some camera software may make the fake highest resolution, interpolated, just for reference.
What width , height do you try to set ?
Try to debug code line by line, inspecting what camera device is found and selected and next...

My default example works ok as-is on my laptop, and shows the same resolutions list as on your screenshot, about my built-in camera. So, it's not 1M, just 0.3M.

 

[TomKluz]

Was trying everyone from the list (it is on the picture). In parallel I was trying with AMcap and also Debut Video. Thay 'can', mi not )
800x600 for example.

 

[peacemaker]

In parallel

Ha ! It is occupied by the AmCAP. Close it.
And catch the errors of the cam init, if it's occupied.

 

[TomKluz]

Parallel it means in this case that I have check with AMCap all options and after with B4J. No mistake ) Don't work really.
320x240 or 640x480 I can switch any time.