Java 确保相机预览大小/纵横比与生成的视频匹配

我正在使用MediaRecorder和Camera课程预览和捕获视频。我的问题是，我不确定如何确保用户在录制时看到的内容与生成的视频相匹配。我的第一个倾向是反复浏览支持的相机预览尺寸，直到找到与我设置为MediaRecorder的视频尺寸纵横比相匹配的最佳尺寸：

camProfile = CamcorderProfile.get(CamcorderProfile.QUALITY_480P);
aspectRatio = (float)camProfile.videoFrameWidth / camProfile.videoFrameHeight;

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这是正确的方法吗？

这对我来说效果很好，而且我没有收到任何批评，不妨也加入

getBestSize

功能：

private Size getBestSize(List<Size> supportedPreviewSizes, float aspectRatio) {
    int surfaceHeight = videoView.getHeight();

    Size bestSize = null;
    Size backupSize = null;
    for (Size size : supportedPreviewSizes) {
        float previewAspectRatio = size.width / (float)size.height;
        previewAspectRatio = Math.round(previewAspectRatio * 10) / 10f;
        if (previewAspectRatio == aspectRatio) { // Best size must match preferred aspect ratio
            if (bestSize == null || Math.abs(surfaceHeight - size.height) < Math.abs(surfaceHeight - bestSize.height))
                bestSize = size;
        }
        else if (bestSize == null) { // If none of supported sizes match preferred aspect ratio, backupSize will be used
            if (backupSize == null || Math.abs(surfaceHeight - size.height) < Math.abs(surfaceHeight - backupSize.height))
                backupSize = size;
        }
    }
    return bestSize != null ? bestSize : backupSize;
}

private Size getBestSize（列表支持预览大小、浮点aspectRatio）{
int surfaceHeight=videoView.getHeight（）；
大小bestSize=null；
大小backupSize=null；
用于（大小：supportedPreviewSizes）{
浮动比率=大小.宽度/（浮动）大小.高度；
PreviewSpectratio=数学圆整（PreviewSpectratio*10）/10f；
如果（PreviewSpectRatio==aspectRatio）{//最佳大小必须与首选纵横比匹配
if（bestSize==null | | Math.abs（surfacehweight-size.height）

mRecorder.setVideoSize(camProfile.videoFrameWidth, camProfile.videoFrameHeight);

private Size getBestSize(List<Size> supportedPreviewSizes, float aspectRatio) {
    int surfaceHeight = videoView.getHeight();

    Size bestSize = null;
    Size backupSize = null;
    for (Size size : supportedPreviewSizes) {
        float previewAspectRatio = size.width / (float)size.height;
        previewAspectRatio = Math.round(previewAspectRatio * 10) / 10f;
        if (previewAspectRatio == aspectRatio) { // Best size must match preferred aspect ratio
            if (bestSize == null || Math.abs(surfaceHeight - size.height) < Math.abs(surfaceHeight - bestSize.height))
                bestSize = size;
        }
        else if (bestSize == null) { // If none of supported sizes match preferred aspect ratio, backupSize will be used
            if (backupSize == null || Math.abs(surfaceHeight - size.height) < Math.abs(surfaceHeight - backupSize.height))
                backupSize = size;
        }
    }
    return bestSize != null ? bestSize : backupSize;
}