Second parameter for AudioVideoCaptureDevice.OpenAsync
is the resolution. And you can get the resolutions using AudioVideoCaptureDevice.GetAvailableCaptureResolutions(sensor)
.
How to change the resolution of camera while recording video in WP8
-
03-06-2022 - |
문제
I am using the video recording sample provided by microsoft here. I want to change the resolution of the video being recorded in my app. Currently its recording in highest resolution by default. How to do so?
videoCaptureDevice.DesiredFormat = new VideoFormat(PixelFormatType.Unknown, 480, 640, 30);
The above statement is throwing Argument Exception.
Also, if possible let me know how to capture from the front camera?
How to achieve this? Please help.
해결책
다른 팁
You may try this one.
private AudioVideoCaptureDevice VideoRecordingDevice;
private Windows.Foundation.Size resolution = new Windows.Foundation.Size(320, 240);
VideoRecordingDevice = await AudioVideoCaptureDevice.OpenAsync(CameraSensorLocation.Back, resolution);
NB: Remember that it may only used for wp8 or later version.
The Solution is (With my knowledge)
VideoCaptureDevice webcam = CaptureDeviceConfiguration.GetDefaultVideoCaptureDevice();
int videoformatcount = webcam.SupportedFormats.Count(); //We will get the avilable video format
if (videoformatcount > 0)
{
var Temp = webcam.SupportedFormats;
VideoFormat objVideoFormat = Temp[videoformatcount - 1];
webcam.DesiredFormat = new VideoFormat(PixelFormatType.Format8bppGrayscale, objVideoFormat.PixelWidth, objVideoFormat.PixelHeight, 1);
}
captureSource.VideoCaptureDevice = webcam;
This will produce the lowest resolution video
Use AudioVideoCaptureDevice to recoed video
StorageFolder isoStore = await ApplicationData.Current.LocalFolder.GetFolderAsync("Shared");
var file = await isoStore.CreateFileAsync("foos1.wmv", CreationCollisionOption.ReplaceExisting);
using (var s = await file.OpenAsync(FileAccessMode.ReadWrite))
{
Windows.Foundation.Size resolution = new Windows.Foundation.Size(640, 480);
avDevice = await AudioVideoCaptureDevice.OpenAsync(CameraSensorLocation.Back,
AudioVideoCaptureDevice.GetAvailableCaptureResolutions(CameraSensorLocation.Back).Last());
VideoBrush videoRecorderBrush = new VideoBrush();
videoRecorderBrush.SetSource(avDevice);
viewfinderRectangle.Fill = videoRecorderBrush;
await avDevice.StartRecordingToStreamAsync(s);
Thread.Sleep(30000);
await avDevice.StopRecordingAsync();
}
new MediaPlayerLauncher()
{
Media = new Uri(file.Path, UriKind.Relative),
}.Show();
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