SurfaceViewHolder.setFixedSize（宽度，高度）未设置为保存在画廊中的视频

Question

我想将视频宽高比设置为1：1在Android Media Recorder期间捕获。 IM使用holder.setFixedSize在OnSurfacechanged方法中

 override fun surfaceChanged(holder: SurfaceHolder, format: Int, w: Int, h: Int) {
    // If your preview can change or rotate, take care of those events here.
    // Make sure to stop the preview before resizing or reformatting it.
    if (mHolder.surface == null) {
        // preview surface does not exist
        return
    }

    // stop preview before making changes
    try {
        mCamera.stopPreview()
    } catch (e: Exception) {
        // ignore: tried to stop a non-existent preview
    }


    var parameters: Camera.Parameters = mCamera.getParameters()
    holder.setFixedSize(parameters.supportedPreviewSizes[0].width,parameters.supportedPreviewSizes[0].height)

    // start preview with new settings
    mCamera.apply {
        try {
            setPreviewDisplay(mHolder)
            startPreview()
        } catch (e: Exception) {
            Log.d(TAG, "Error starting camera preview: ${e.message}")
        }
    }
}

，但它仅调整预览尺寸。当我将视频保存在画廊中时，它的全屏尺寸为。还有setFixedSize方法拉伸了视频