Ui->btn_record->setText(tr("Stop recording")) Recorder->setOutputLocation(QUrl::fromLocalFile(outputpath + "/" + name + ".mp4"))
QString name = filename + QDateTime::currentDateTime().toString("dd.MM.yy-h-m-s") //3
Ui->stackedWidget->setCurrentWidget(ui->cameraViewer) //2 If(ui->stackedWidget->currentIndex() !=0)//1 So, everything is setup, all thats missing is the recording method, which will start with the button press on "Start recording": if(ui->btn_record->text()= tr("Start recording"))
#Qt sound control 720p#
Doing some settings, I'd like to record as default at 720p for now.Creating the QMediaRecorder object (obviously for recording).Setting up the playback infrastructure (similar to the mp3 player).Create a QMediaPlayer for playing back the recordings.Initialize the Viewfinder with the camera object.
#Qt sound control code#
This code is in the constructor of the mainwindow, and handles most initialization work which needs to be done: Ui->cameraViewer->setFocus(camera->focus()) //9 tQuality(QMultimedia::VeryHighQuality) Ĭamera->setCaptureMode(QCamera::CaptureVideo) //7 Recorder = new QMediaRecorder(camera,this) //5Īuto& settings = recorder->videoSettings() //6 Ui->stackedWidget->addWidget(videowidget) The Multimedia Framework of Qt5 already offers the important classes: ui->setupUi(this) Most code is ui/event related, its not very complicated to record videos in Qt5. It also contains a QVideoWidget, as I want to be able to open and playback the recordings inside the program. The StackWidget contains the QCameraViewFinder, which will display the web cams view in my program. Again, I've decided to use QWidgets for Desktop, instead of QML. So there is a simple interface, consisting of a QStackWidget, 2 Buttons (Record and Options) and a Listview. I want my video recording program to be easy, as I need to be able to let other easily record with it. So, when recording talks, one usually also should try to record the speakers audio. When recording talks, everything between your speaker and your microphone can become a problem. If the light settings are dimmed in the room, the picture will get more noisy.
#Qt sound control full#
I have good, full HD Web cams from Logitech, which do a fairly good job, as long as there is enough light. But that doesn't say anything about the image quality. Recording with Webcams gives you if you select a HD Web cam also HD Videos. Worth a shot, so I implemented my own little video recording program with Qt5.īefore I dive into the code, some words about image quality in videos. So, with all this experience, I was looking at Qt5, and suddenly realizing, that it offers Video Recordings.
#Qt sound control movie#
Last year I used Windows Movie Maker, as its offers easy recording, but still the tool managed to record video in only 240p, and that's not quite as I had planned for it. But most of them are rather complicated, they offer such a large feature set, that recording videos is only one of them. Of course there are lots of programs, which already can record from web cams videos, which is one of my goals. No big deal, at least with the last point we managed to screw up, as you might already know from last years conference. Windows or Linux, easily to handle, as staff should not need to be trained on the tool longer then needed, and doing a fairly good job. Recording a video seems an easy task, but as I organized last years Meeting C++ conference, I tried to find a fitting program for the job.
Something else had raised my attention: to be able to record videos. While I loved the thought of having a simple, multi platform MP3 player written in Qt5, it was not the original reason to take a look into Qt5 Multimedia capabilities. I've started in February a little series about Qt5, and started with implementing a simple MP3 player with Qt5 Multimedia APIs.
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