使用 VideoCapture API 可使用 MP4 格式将视频直接录制到文件系统。请注意,__VideoCapture__ API 在 Unity Editor 中无法使用。
必须启用网络摄像头 (WebCam) 和麦克风 (Microphone) 功能才能使用 VideoCapture API。以下示例将录制 5 秒视频并保存到文件系统。
using UnityEngine;
using System.Collections;
using System.Linq;
using UnityEngine.XR.WSA.WebCam;
public class VideoCaptureExample : MonoBehaviour
{
static readonly float MaxRecordingTime = 5.0f;
VideoCapture m_VideoCapture = null;
float m_stopRecordingTimer = float.MaxValue;
// 使用此函数进行初始化
void Start()
{
StartVideoCaptureTest();
}
void Update()
{
if (m_VideoCapture == null || !m_VideoCapture.IsRecording)
{
return;
}
if (Time.time > m_stopRecordingTimer)
{
m_VideoCapture.StopRecordingAsync(OnStoppedRecordingVideo);
}
}
void StartVideoCaptureTest()
{
Resolution cameraResolution = VideoCapture.SupportedResolutions.OrderByDescending((res) => res.width * res.height).First();
Debug.Log(cameraResolution);
float cameraFramerate = VideoCapture.GetSupportedFrameRatesForResolution(cameraResolution).OrderByDescending((fps) => fps).First();
Debug.Log(cameraFramerate);
VideoCapture.CreateAsync(false, delegate (VideoCapture videoCapture)
{
if (videoCapture != null)
{
m_VideoCapture = videoCapture;
Debug.Log("Created VideoCapture Instance!");
CameraParameters cameraParameters = new CameraParameters();
cameraParameters.hologramOpacity = 0.0f;
cameraParameters.frameRate = cameraFramerate;
cameraParameters.cameraResolutionWidth = cameraResolution.width;
cameraParameters.cameraResolutionHeight = cameraResolution.height;
cameraParameters.pixelFormat = CapturePixelFormat.BGRA32;
m_VideoCapture.StartVideoModeAsync(cameraParameters,
VideoCapture.AudioState.ApplicationAndMicAudio,
OnStartedVideoCaptureMode);
}
else
{
Debug.LogError("Failed to create VideoCapture Instance!");
}
});
}
void OnStartedVideoCaptureMode(VideoCapture.VideoCaptureResult result)
{
Debug.Log("Started Video Capture Mode!");
string timeStamp = Time.time.ToString().Replace(".", "").Replace(":", "");
string filename = string.Format("TestVideo_{0}.mp4", timeStamp);
string filepath = System.IO.Path.Combine(Application.persistentDataPath, filename);
filepath = filepath.Replace("/", @"\");
m_VideoCapture.StartRecordingAsync(filepath, OnStartedRecordingVideo);
}
void OnStoppedVideoCaptureMode(VideoCapture.VideoCaptureResult result)
{
Debug.Log("Stopped Video Capture Mode!");
}
void OnStartedRecordingVideo(VideoCapture.VideoCaptureResult result)
{
Debug.Log("Started Recording Video!");
m_stopRecordingTimer = Time.time + MaxRecordingTime;
}
void OnStoppedRecordingVideo(VideoCapture.VideoCaptureResult result)
{
Debug.Log("Stopped Recording Video!");
m_VideoCapture.StopVideoModeAsync(OnStoppedVideoCaptureMode);
}
}