Managing videos (transmitted by a Web Camera)

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Managing videos (transmitted by a Web Camera)

Overview

Principle

Related examples

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Managing videos (transmitted by a Web Camera)

Overview

To manage the video sequence currently transmitted by the Web camera installed on the current computer, WINDEV proposes:

the Web Camera control.
WLanguage functions.

You have the ability to:

view the video transmitted by a Web camera.
save an image from the transmitted video in an image file (BMP, JPEG, etc.).
save a section of the transmitted video in a video file.
...

Remark: To view a video in AVI format, use an Image control and the MCI functions.

Principle

To handle the videos:

Create a window containing a Web Camera control.
Display the description window of this control ("Description" in the context menu).
In this window, select the Web Camera to use.
Remark: The Web camera to use can also be specified through programming (VideoSetDriver).
Through programming:
- Display the video sequence being transmitted by the Web camera specified in the Web Camera control (VideoDisplay).
- Save (if necessary) the video currently transmitted by the specified Web camera as an image (BMP file) or as a video sequence (AVI file) with VideoCapture.
- Modify (if necessary) the Web camera used (VideoSetDriver).
- Configure (if necessary) the video capture driver (VideoConfigure).
- List (if necessary) the video capture drivers installed on the current computer (VideoListDriver).
- Return (if necessary) the status of the Web Camera control (VideoStatus).
- Stop displaying or saving a video sequence in the Web Camera control (VideoStop).

Remarks

At runtime, the video sequence transmitted by the associated Web Camera is automatically displayed as soon as the window containing the Web Camera control is opened. In this case, there is no need to use VideoDisplay.
If no Web camera was associated with the Web Camera control, VideoDisplay and/or VideoCapture handle the video sequence transmitted by the default Web camera (on the current computer).
To save the video currently transmitted by the specified Web camera as an image file, you can use:
- the VideoCapture function.
- dSaveImageBMP, dSaveImageGIF and dSaveImageJPEG.

Related Examples:

Complete examples (WINDEV): WD WebCam

[ + ] This example explains how to include a WebCam in a WINDEV application.
The following topics will be presented in this example:
1/ Camera control
2/ Use of the video functions

Summary of the example supplied with WINDEV:
This example explains how a WebCam can be included in a WINDEV window.
You have the ability to view the image captured by the camera, to perform an instant capture and to film the scene broadcasted as a Windows animation (AVI).

Unit examples (WINDEV Mobile): The Camera functions

[ + ] Using the WLanguage "Camera" functions to start the native video camera application of the device in order to record a video or to take a photo.

Unit examples (WINDEV Mobile): The Camera control

[ + ] Using the Camera control in a WINDEV Mobile application.
The control is used to capture photos and videos.