Как записать видео с веб-камеры в файлы MPEG или AVI с помощью приложения C# для настольных ПК
Я разрабатываю настольное приложение, которое требует от меня подключения к веб-камере (-ам) и записи (сохранения) видео в форматах MPEG, AVI, MP4 и WMV и записи на CD/DVD. Приложение находится в Win Forms. Я только ищу бесплатные или открытые решения или элементы управления.
Я сделал сохранение в формате AVI с использованием Aforge.Net, но для его сохранения потребовался больший размер (например, 60-100 МБ для 15sce 320x240 Video). Я ожидаю 1 МБ в течение 10 секунд. Вот код:
using System;
using System.Drawing;
using System.Windows.Forms;
using AForge.Video;
using AForge.Video.DirectShow;
using AForge.Video.VFW;
namespace Aforge_Web_Cam
{
public partial class VideoForm : Form
{
private FilterInfoCollection VideoCaptureDevices;
private VideoCaptureDevice FinalVideo = null;
private VideoCaptureDeviceForm captureDevice;
private Bitmap video;
private AVIWriter AVIwriter = new AVIWriter();
private SaveFileDialog saveAvi;
public VideoForm()
{
InitializeComponent();
}
private void VideoForm_Load(object sender, EventArgs e)
{
VideoCaptureDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
captureDevice = new VideoCaptureDeviceForm();
}
private void butStart_Click(object sender, EventArgs e)
{
if (captureDevice.ShowDialog(this) == DialogResult.OK)
{
VideoCaptureDevice videoSource = captureDevice.VideoDevice;
FinalVideo = captureDevice.VideoDevice;
FinalVideo.NewFrame += new NewFrameEventHandler(FinalVideo_NewFrame);
FinalVideo.Start();
}
}
void FinalVideo_NewFrame(object sender, NewFrameEventArgs eventArgs)
{
if (butStop.Text == "Stop Record")
{
video = (Bitmap)eventArgs.Frame.Clone();
pbVideo.Image = (Bitmap)eventArgs.Frame.Clone();
AVIwriter.Quality = 0;
AVIwriter.AddFrame(video);
}
else
{
video = (Bitmap)eventArgs.Frame.Clone();
pbVideo.Image = (Bitmap)eventArgs.Frame.Clone();
}
}
private void butRecord_Click(object sender, EventArgs e)
{
saveAvi = new SaveFileDialog();
saveAvi.Filter = "Avi Files (*.avi)|*.avi";
if (saveAvi.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
int h = captureDevice.VideoDevice.VideoResolution.FrameSize.Height;
int w = captureDevice.VideoDevice.VideoResolution.FrameSize.Width;
AVIwriter.Open(saveAvi.FileName, w, h);
butStop.Text = "Stop Record";
//FinalVideo = captureDevice.VideoDevice;
//FinalVideo.NewFrame += new NewFrameEventHandler(FinalVideo_NewFrame);
//FinalVideo.Start();
}
}
private void butStop_Click(object sender, EventArgs e)
{
if (butStop.Text == "Stop Record")
{
butStop.Text = "Stop";
if (FinalVideo == null)
{ return; }
if (FinalVideo.IsRunning)
{
//this.FinalVideo.Stop();
this.AVIwriter.Close();
pbVideo.Image = null;
}
}
else
{
this.FinalVideo.Stop();
this.AVIwriter.Close();
pbVideo.Image = null;
}
}
private void butCapture_Click(object sender, EventArgs e)
{
pbVideo.Image.Save("IMG" + DateTime.Now.ToString("hhmmss") + ".jpg");
}
private void butCancel_Click(object sender, EventArgs e)
{
this.Close();
}
private void VideoForm_FormClosing(object sender, FormClosingEventArgs e)
{
if (FinalVideo == null)
{ return; }
if (FinalVideo.IsRunning)
{
this.FinalVideo.Stop();
this.AVIwriter.Close();
}
}
}
}
1 ответ
AVIWriter не обеспечивает видеосжатие, используйте FileWriter из AForge.Video.FFMPEG. Там вы можете выбрать все: размер, частоту кадров, кодек и битрейт, и если ваше видео было 600 МБ за 20 секунд, то теперь оно будет 6 МБ за 20 секунд.
Ну вот:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using AForge.Video;
using AForge.Video.DirectShow;
using AForge.Video.FFMPEG;
using AForge.Video.VFW;
namespace WindowsFormsApplication12
{
public partial class Form1 : Form
{
private FilterInfoCollection VideoCaptureDevices;
private VideoCaptureDevice FinalVideo = null;
private VideoCaptureDeviceForm captureDevice;
private Bitmap video;
//private AVIWriter AVIwriter = new AVIWriter();
private VideoFileWriter FileWriter = new VideoFileWriter();
private SaveFileDialog saveAvi;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
VideoCaptureDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
captureDevice = new VideoCaptureDeviceForm();
}
private void button1_Click(object sender, EventArgs e)
{
if (captureDevice.ShowDialog(this) == DialogResult.OK)
{
VideoCaptureDevice videoSource = captureDevice.VideoDevice;
FinalVideo = captureDevice.VideoDevice;
FinalVideo.NewFrame += new NewFrameEventHandler(FinalVideo_NewFrame);
FinalVideo.Start();
}
}
void FinalVideo_NewFrame(object sender, NewFrameEventArgs eventArgs)
{
if (butStop.Text == "Stop Record")
{
video = (Bitmap)eventArgs.Frame.Clone();
pictureBox1.Image = (Bitmap)eventArgs.Frame.Clone();
//AVIwriter.Quality = 0;
FileWriter.WriteVideoFrame(video);
//AVIwriter.AddFrame(video);
}
else
{
video = (Bitmap)eventArgs.Frame.Clone();
pictureBox1.Image = (Bitmap)eventArgs.Frame.Clone();
}
}
private void button2_Click(object sender, EventArgs e)
{
saveAvi = new SaveFileDialog();
saveAvi.Filter = "Avi Files (*.avi)|*.avi";
if (saveAvi.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
int h = captureDevice.VideoDevice.VideoResolution.FrameSize.Height;
int w = captureDevice.VideoDevice.VideoResolution.FrameSize.Width;
FileWriter.Open(saveAvi.FileName, w, h,25,VideoCodec.Default,5000000);
FileWriter.WriteVideoFrame(video);
//AVIwriter.Open(saveAvi.FileName, w, h);
butStop.Text = "Stop Record";
//FinalVideo = captureDevice.VideoDevice;
//FinalVideo.NewFrame += new NewFrameEventHandler(FinalVideo_NewFrame);
//FinalVideo.Start();
}
}
private void butStop_Click(object sender, EventArgs e)
{
if (butStop.Text == "Stop Record")
{
butStop.Text = "Stop";
if (FinalVideo == null)
{ return; }
if (FinalVideo.IsRunning)
{
//this.FinalVideo.Stop();
FileWriter.Close();
//this.AVIwriter.Close();
pictureBox1.Image = null;
}
}
else
{
this.FinalVideo.Stop();
FileWriter.Close();
//this.AVIwriter.Close();
pictureBox1.Image = null;
}
}
private void button3_Click(object sender, EventArgs e)
{
pictureBox1.Image.Save("IMG" + DateTime.Now.ToString("hhmmss") + ".jpg");
}
private void button4_Click(object sender, EventArgs e)
{
this.Close();
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (FinalVideo == null)
{ return; }
if (FinalVideo.IsRunning)
{
this.FinalVideo.Stop();
FileWriter.Close();
//this.AVIwriter.Close();
}
}
}
}