Audio and video interception based on FFMPEG (C++Qt version)
This blog is based on the previous blog:
The last blog realized the file encapsulation conversion. We add a little more function on this basis. The implementation can arbitrarily intercept audio and video within a period of ...
Posted by Centrek on Mon, 06 Dec 2021 19:30:31 -0800
QMainWindow is a class that provides users with main window programs, including a menu bar, multiple tool bars, multiple dock widgets, a status bar and a central widget. It is the basis of many applications, such as text editor, picture editor, etc. This chapter also creates the interface in the form of code, so the settings of the following o ...
Posted by run2web on Fri, 03 Dec 2021 14:22:53 -0800
QCustomPlot is a graphic library based on Qt C + +, which is used for drawing and data visualization - making beautiful 2D charts - curves, trends, coordinate charts, histograms, etc., and providing high-performance services for real-time visualization applications. It has no further dependencies and is well documented.
get i ...
Posted by sapna on Fri, 26 Nov 2021 09:16:20 -0800
Congratulations on finding this article.
In my recent work, I need to use QT to write many functions about point cloud processing. There are too many pits in this process. (unable to resist the temptation to make complaints about PCL+VTK, the direct pop-up display of the point cloud is very simple. However, embedding VTK into Qt to display ...
Posted by killfall on Thu, 25 Nov 2021 19:13:57 -0800
In the process of project development, third-party libraries are often used. The path, header file path, referenced library name, etc. of the third-party library need to be specified in QtCreator project; In addition, you may also need to write a general project to select different libraries for different compiler types and differe ...
Posted by LeeRoy8888 on Thu, 25 Nov 2021 14:07:29 -0800
opencv opens the camera and performs face detection
Development environment: Qt5.12.4, MSVC2017, win10
First, sort out the process
Configure opencv Library in QtStart a sub thread to continuously obtain image frames from the cameraUse the obtained image frame to input opencv face recognition algorithm, and draw a rectangular boxTransfer the ...
Posted by fallen_angel21 on Fri, 19 Nov 2021 08:25:28 -0800
The lambada expression is supported in higher versions of QT, but the line "CONFIG += C++11" needs to be added to the file "projectName.pro". The new and old forms are documented below.
1. Complete Project
Connections between signals and slot functions in tcpserver.cpp in this project use the connect() function in ...
Posted by vtolbert on Fri, 12 Nov 2021 12:24:24 -0800
Generally, the drawing function is realized through three classes: QPainter, QPen and QBrush. QPixmap is used to load and render this Map image, its image presentation is essentially realized by drawing.
QPainter class performs drawing operations on QWidget (control), provides highly optimized functions for most graphical interfaces, ...
Posted by pob123 on Sun, 07 Nov 2021 17:19:55 -0800
1, Project requirements
Don't write it first. We'll add it when we're finished
2, Design ideas
It's late today. Just make a code record. It's all on paper and will be added later
3, Day 1 project diary
1. Today's summary:
I wrote half a server today, Main functions 1) You can create a server using Tcp protocol, define the port yourself, a ...
Posted by praeses on Wed, 03 Nov 2021 16:06:11 -0700
1, The solution prompt window flashes:
1. adopt system()Function solution:
stay return 0；Previously added system("pause"); Function call.
2. With the help of VS Tool solution:
On the project --->Right click ---> attribute ---> Configuration properties ---> Connector ---> system ---> Subsystem
---> Select con ...
Posted by sryder on Tue, 02 Nov 2021 09:00:54 -0700