static void TestFFMPEG()
{
var videoWriter = new VideoFileWriter();
int width = 800;
int height = 600;
int framerate = 24;
string path = Path.GetFullPath("output.webm");
int videoBitRate = 1200 * 1000;
int audioFrameSize = 44100;
int audioBitRate = 128000;
int audioSampleRate = 44100;
AudioLayout audioChannels = AudioLayout.Mono;
videoWriter.Width = width;
videoWriter.Height = height;
videoWriter.FrameRate = framerate;
videoWriter.VideoCodec = VideoCodec.Vp8;
videoWriter.BitRate = videoBitRate;
videoWriter.PixelFormat = AVPixelFormat.FormatYuv420P;
videoWriter.Open(path);
//, audioFrameSize, audioChannels, audioSampleRate, AudioCodec.Vorbis, audioBitRate);
var a = new Accord.DirectSound.AudioDeviceCollection(DirectSound.AudioDeviceCategory.Capture);
// Generate 1 second of audio
SineGenerator gen = new SineGenerator()
{
SamplingRate = audioSampleRate,
Channels = 1,
Format = SampleFormat.Format16Bit,
Frequency = 10,
Amplitude = 1000.9f,
};
Signal s = gen.Generate(TimeSpan.FromSeconds(255));
//s.Save("test.wav");
var m2i = new MatrixToImage();
Bitmap frame;
for (byte i = 0; i < 255; i++)
{
byte[,] matrix = Matrix.Create(height, width, i);
m2i.Convert(matrix, out frame);
videoWriter.WriteVideoFrame(frame, TimeSpan.FromSeconds(1));
//// Generate 1 second of audio
//s = gen.Generate(TimeSpan.FromSeconds(1));
//videoWriter.WriteAudioFrame(s);
}
videoWriter.Close();
}
private void Form1_Load(object sender, System.EventArgs e)
{
// **************************************************
IsRecording = false;
// **************************************************
// **************************************************
//System.Drawing.Rectangle captureRegion =
// System.Windows.Forms.Screen.PrimaryScreen.Bounds;
System.Drawing.Rectangle captureRegion =
System.Windows.Forms.Screen.AllScreens
.ToList()[0]
.Bounds;
//CaptureRegionWidth = captureRegion.Width;
//CaptureRegionHeight = captureRegion.Height;
CaptureRegionWidth = (int)(captureRegion.Width * 1.5);
CaptureRegionHeight = (int)(captureRegion.Height * 1.5);
// **************************************************
// https://support.video.ibm.com/hc/en-us/articles/207852117-Internet-connection-and-recommended-encoding-settings
// **************************************************
// 24, 30
int videoFrameRate = 25;
// 1200 - 4000 KbPS
// 1200 * 1024
//int videoBitRate = CaptureRegionWidth * CaptureRegionHeight;
//int videoBitRate = 200 * 1000;
int videoBitRate = 1200 * 1000;
int videoKeyFrameInterval =
System.Convert.ToInt32(1000 / (double)videoFrameRate);
int videoFrameSize =
CaptureRegionWidth * CaptureRegionHeight;
Accord.Math.Rational videoFrameRateRational =
new Accord.Math.Rational
(numerator: 1000, denominator: videoKeyFrameInterval);
// **************************************************
// **************************************************
timerRecording.Interval = videoKeyFrameInterval;
// **************************************************
// **************************************************
int audioSampleRate = 44100;
// 320 * 1000
// 320 * 1024
// 128 * 1024
int audioBitRate = 128 * 1000;
int audioFrameSize = 10 * 4096;
// **************************************************
// **************************************************
string pathName =
$"D:\\_TEMP\\MOVIE_{ System.DateTime.Now.ToString("yyyy-MM-dd-HH-mm-ss") }.avi";
// **************************************************
// **************************************************
VideoFileWriter =
new Accord.Video.FFMPEG.VideoFileWriter
{
Width = CaptureRegionWidth,
Height = CaptureRegionHeight,
FrameRate = videoFrameRateRational,
BitRate = videoBitRate,
VideoCodec = Accord.Video.FFMPEG.VideoCodec.H264,
};
// visually Lossless
VideoFileWriter.VideoOptions["crf"] = "18";
VideoFileWriter.VideoOptions["preset"] = "veryfast";
VideoFileWriter.VideoOptions["tune"] = "zerolatency";
VideoFileWriter.VideoOptions["x264opts"] = "no-mbtree:sliced-threads:sync-lookahead=0";
// **************************************************
// **************************************************
System.Guid?audioDeviceGuid = null;
Accord.DirectSound.AudioDeviceCollection audioDeviceCollection =
new Accord.DirectSound.AudioDeviceCollection(Accord.DirectSound.AudioDeviceCategory.Capture);
foreach (Accord.DirectSound.AudioDeviceInfo audioDeviceInfo in audioDeviceCollection)
{
audioDeviceGuid = audioDeviceInfo.Guid;
//System.Windows.Forms.MessageBox.Show
// ($"Guid: { audioDeviceInfo.Guid } - Description: { audioDeviceInfo.Description }");
}
// **************************************************
// **************************************************
if (audioDeviceGuid.HasValue)
{
AudioCaptureDevice =
new Accord.DirectSound.AudioCaptureDevice(device: audioDeviceGuid.Value)
{
SampleRate = audioSampleRate,
DesiredFrameSize = audioFrameSize,
Format = Accord.Audio.SampleFormat.Format32BitIeeeFloat,
};
AudioCaptureDevice.AudioSourceError += AudioCaptureDevice_AudioSourceError;
}
// **************************************************
// **************************************************
var audioCaptureDevices =
new System.Collections.Generic.List <Accord.DirectSound.AudioCaptureDevice>();
if (AudioCaptureDevice != null)
{
audioCaptureDevices.Add(AudioCaptureDevice);
}
// **************************************************
// **************************************************
if (audioCaptureDevices.Count > 0)
{
AudioSourceMixer =
new Accord.Audio.AudioSourceMixer(sources: audioCaptureDevices);
AudioSourceMixer.NewFrame += AudioSourceMixer_NewFrame;
AudioSourceMixer.AudioSourceError += AudioSourceMixer_AudioSourceError;
VideoFileWriter.FrameSize = audioFrameSize;
VideoFileWriter.AudioBitRate = audioBitRate;
VideoFileWriter.SampleRate = audioSampleRate;
VideoFileWriter.AudioCodec = Accord.Video.FFMPEG.AudioCodec.Aac;
VideoFileWriter.AudioLayout =
AudioSourceMixer.NumberOfChannels == 1 ?
Accord.Video.FFMPEG.AudioLayout.Mono :
Accord.Video.FFMPEG.AudioLayout.Stereo;
}
// **************************************************
VideoFileWriter.Open(fileName: pathName);
}
