Record audio and video in one container

stevem8

Hi

I am building an application that records video from a USB capture stick, the program works great while using openCV with imwrire to create the file.

I want to record audio along with this video file, i have looked at the QT examples and have built a program that records audio without a problem.

The next stage is to combine these 2 streams together and write into one file within QT, does anyone know how this can be done? Would it require using LIbav or something similar?

Steve

SGaist

Hi and welcome to devnet,

Is your USB capture stick device seen as a camera ? If so you can try using QtMultimedia to record that input.

Hope it helps

stevem8

@SGaist

Hi

Thanks for your response, yes the catputure stick is being seen as a camera, i am able to make a video file using openCV and x264vfw to create a video file which works perfectly. I have also used the QT example to create an audio recorder which works without a problem. These 2 sepparate programs will create individual video and audio files.

I can't find an example where i can mux both these files together within QT, i have used ffmpegwrapper for QT but this however only handles video.

Do you know of a QtMulitmedia example that will record both audio and video.

Thanks for the help

Steve

SGaist

Take a look at the QCamera + QRecorder classes they might be enough

stevem8

@SGaist

I had a look at QMediaRecorder class but this class will only accept QMedia objects (QAudioDecoder, QCamera, QMediaPlayer, and QRadioTuner). My application takes a video from the camera using openCV, performs video processing and produces a series of QImage frames which i write to a file.

Is it possible to stream these processed QImage frames to QMediaPlayer which can then be used as an object for QMediaRecorder?

I cant seems to find QRecorder, will that be more suitable than QMediaRoecorder?

Steve

SGaist

Isn't your camera detected by QtMultimedia i.e. listed by QCameraInfo ?

stevem8

@SGaist

The camera is being detected but that is not what i want to record, i need to record the video stream that has been processed by openCV, can this be done?

SGaist

Then a project like QtAV might be what you need.