Android CameraX CameraView 如何设置视频分辨率？

Question

I use CameraView from CameraX library, for recording video. But I can't find any settings of video recording process. Earlier I use old library version 1.0.0-alpha08 and default resolution(1920 х 1080) suited me, but that version had some issues. For now I'm using 1.0.0-beta02 , I get very strange resolution (1600 x 1200 - Pixel 3a 1400x1200 - Huawei p20 lite).

Answer 1

 val imageCaptureConfig = ImageCaptureConfig.Builder()
    .setLensFacing(CameraX.LensFacing.BACK)
    .setCaptureMode(ImageCapture.CaptureMode.MAX_QUALITY)
    .setTargetResolution(Size(width, height))
    .setTargetAspectRatio(Rational(3,4))
    .build()

replace width and height with your dimens. 3,4 in 'Rational(3,4)' with your ratio (you can also remove it)

Answer 2

In version 1.0.0-beta06 you can use setTargetResolution(resolution: Size) or setMaxResolution(resolution: Size) in VideoCaptureConfig.Builder() used for video UseCase.

videoCapture = VideoCaptureConfig.Builder()
    .setTargetResolution(VIDEO_SIZE)
    .setMaxResolution(VIDEO_SIZE)
    .build()

Answer 3

You can configure recorder's quality using QualitySelector

val preferredQuality = Quality.HD
val recorder = Recorder.Builder()
    .setQualitySelector(
        QualitySelector.from(
            preferredQuality,
            FallbackStrategy.higherQualityOrLowerThan(preferredQuality)
        )
    )
    .build()
val videoCapture = VideoCapture.withOutput(recorder)