目录
说明
利用周杰的开源项目 Sdcb.FFmpeg
项目地址：https://github.com/sdcb/Sdcb.FFmpeg/
代码实现参考：https://github.com/sdcb/ffmpeg-muxing-video-demo
效果
C#利用ffmpeg借助NVIDIA GPU实现实时RTSP硬解码+硬编码录制MP4
项目
代码
using Sdcb.FFmpeg.Codecs;
using Sdcb.FFmpeg.Formats;
using Sdcb.FFmpeg.Raw;
using Sdcb.FFmpeg.Toolboxs.Extensions;
using System;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace Sdcb.FFmpegDemo
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
CancellationTokenSource cts;
/// <summary>
/// 播放
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button1_Click(object sender, EventArgs e)
{
button1.Enabled = false;
button2.Enabled = true;
cts = new CancellationTokenSource();
string rtsp_url = txtURL.Text;
//输出视频文件的名称。
string outputFile = "output.mp4";
Task.Run(() => Recording(rtsp_url, outputFile, cts.Token));
}
void Recording(string url, string outputFile, CancellationToken cancellationToken)
{
//输出视频的帧率,帧率设置为每秒25帧
AVRational frameRate = new AVRational(25, 1);
//输出视频的比特率。
long bitRate = 16 * 1024 * 1024; // 16M
//从文件夹读取
//该字符串指定了源图像的文件夹和命名模式。%03d部分表示图像以三位数字命名（例如，001.jpg，002.jpg等）。
//string sourceFolder = @".\src\%03d.jpg";
//FormatContext srcFc = FormatContext.OpenInputUrl(sourceFolder, options: new MediaDictionary
//{
// ["framerate"] = frameRate.ToString()
//});
FormatContext srcFc = FormatContext.OpenInputUrl(url);
srcFc.LoadStreamInfo();
MediaStream srcVideo = srcFc.GetVideoStream();
CodecParameters srcCodecParameters = srcVideo.Codecpar;
CodecContext videoDecoder = new CodecContext(Codec.FindDecoderByName("h264_cuvid"));
{
};
videoDecoder.FillParameters(srcCodecParameters);
videoDecoder.Open();
//var d= Codec.FindDecoders(AVCodecID.H264).Select(x => x.Name);
//var e = Codec.FindEncoders(AVCodecID.H264).Select(x => x.Name);
FormatContext dstFc = FormatContext.AllocOutput(OutputFormat.Guess("mp4"));
dstFc.VideoCodec = Codec.FindEncoderByName("h264_nvenc");
MediaStream vstream = dstFc.NewStream(dstFc.VideoCodec);
CodecContext vcodec = new CodecContext(dstFc.VideoCodec)
{
Width = srcCodecParameters.Width,
Height = srcCodecParameters.Height,
TimeBase = frameRate.Inverse(),
PixelFormat = AVPixelFormat.Yuv420p,
Flags = AV_CODEC_FLAG.GlobalHeader,
BitRate = bitRate,
};
vcodec.Open(dstFc.VideoCodec);
vstream.Codecpar.CopyFrom(vcodec);
vstream.TimeBase = vcodec.TimeBase;
IOContext io = IOContext.OpenWrite(outputFile);
dstFc.Pb = io;
dstFc.WriteHeader();
// src -- srcFc.ReadPackets() -->
// src Packet -- DecodePackets(videoDecoder) -->
// src Frame -- ConvertFrames(vcodec) -->
// dst Frame -- EncodeFrames(vcodec) -->
// dst Packet -- dstFc.InterleavedWritePacket -->
// dst
foreach (Packet packet in srcFc
.ReadPackets().Where(x => x.StreamIndex == srcVideo.Index)
.DecodePackets(videoDecoder)
.ConvertFrames(vcodec)
.EncodeFrames(vcodec)
)
{
try
{
packet.RescaleTimestamp(vcodec.TimeBase, vstream.TimeBase);
packet.StreamIndex = vstream.Index;
dstFc.InterleavedWritePacket(packet);
if (cancellationToken.IsCancellationRequested) break;
}
finally
{
packet.Unref();
}
}
dstFc.WriteTrailer();
io.Dispose();
vcodec.Dispose();
dstFc.Dispose();
videoDecoder.Dispose();
srcFc.Dispose();
}
/// <summary>
/// 停止
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button2_Click(object sender, EventArgs e)
{
button2.Enabled = false;
button1.Enabled = true;
cts.Cancel();
}
private void Form1_Load(object sender, EventArgs e)
{
button2.Enabled = false;
button1.Enabled = true;
Sdcb.FFmpeg.Utils.FFmpegLogger.LogWriter = (level, msg) => Console.WriteLine(msg);
}
}
}
using Sdcb.FFmpeg.Codecs;
using Sdcb.FFmpeg.Formats;
using Sdcb.FFmpeg.Raw;
using Sdcb.FFmpeg.Toolboxs.Extensions;
using System;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace Sdcb.FFmpegDemo
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
CancellationTokenSource cts;
/// <summary>
/// 播放
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button1_Click(object sender, EventArgs e)
{
button1.Enabled = false;
button2.Enabled = true;
cts = new CancellationTokenSource();
string rtsp_url = txtURL.Text;
//输出视频文件的名称。
string outputFile = "output.mp4";
Task.Run(() => Recording(rtsp_url, outputFile, cts.Token));
}
void Recording(string url, string outputFile, CancellationToken cancellationToken)
{
//输出视频的帧率,帧率设置为每秒25帧
AVRational frameRate = new AVRational(25, 1);
//输出视频的比特率。
long bitRate = 16 * 1024 * 1024; // 16M
//从文件夹读取
//该字符串指定了源图像的文件夹和命名模式。%03d部分表示图像以三位数字命名（例如，001.jpg，002.jpg等）。
//string sourceFolder = @".\src\%03d.jpg";
//FormatContext srcFc = FormatContext.OpenInputUrl(sourceFolder, options: new MediaDictionary
//{
// ["framerate"] = frameRate.ToString()
//});
FormatContext srcFc = FormatContext.OpenInputUrl(url);
srcFc.LoadStreamInfo();
MediaStream srcVideo = srcFc.GetVideoStream();
CodecParameters srcCodecParameters = srcVideo.Codecpar;
CodecContext videoDecoder = new CodecContext(Codec.FindDecoderByName("h264_cuvid"));
{
};
videoDecoder.FillParameters(srcCodecParameters);
videoDecoder.Open();
//var d= Codec.FindDecoders(AVCodecID.H264).Select(x => x.Name);
//var e = Codec.FindEncoders(AVCodecID.H264).Select(x => x.Name);
FormatContext dstFc = FormatContext.AllocOutput(OutputFormat.Guess("mp4"));
dstFc.VideoCodec = Codec.FindEncoderByName("h264_nvenc");
MediaStream vstream = dstFc.NewStream(dstFc.VideoCodec);
CodecContext vcodec = new CodecContext(dstFc.VideoCodec)
{
Width = srcCodecParameters.Width,
Height = srcCodecParameters.Height,
TimeBase = frameRate.Inverse(),
PixelFormat = AVPixelFormat.Yuv420p,
Flags = AV_CODEC_FLAG.GlobalHeader,
BitRate = bitRate,
};
vcodec.Open(dstFc.VideoCodec);
vstream.Codecpar.CopyFrom(vcodec);
vstream.TimeBase = vcodec.TimeBase;
IOContext io = IOContext.OpenWrite(outputFile);
dstFc.Pb = io;
dstFc.WriteHeader();
// src -- srcFc.ReadPackets() -->
// src Packet -- DecodePackets(videoDecoder) -->
// src Frame -- ConvertFrames(vcodec) -->
// dst Frame -- EncodeFrames(vcodec) -->
// dst Packet -- dstFc.InterleavedWritePacket -->
// dst
foreach (Packet packet in srcFc
.ReadPackets().Where(x => x.StreamIndex == srcVideo.Index)
.DecodePackets(videoDecoder)
.ConvertFrames(vcodec)
.EncodeFrames(vcodec)
)
{
try
{
packet.RescaleTimestamp(vcodec.TimeBase, vstream.TimeBase);
packet.StreamIndex = vstream.Index;
dstFc.InterleavedWritePacket(packet);
if (cancellationToken.IsCancellationRequested) break;
}
finally
{
packet.Unref();
}
}
dstFc.WriteTrailer();
io.Dispose();
vcodec.Dispose();
dstFc.Dispose();
videoDecoder.Dispose();
srcFc.Dispose();
}
/// <summary>
/// 停止
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button2_Click(object sender, EventArgs e)
{
button2.Enabled = false;
button1.Enabled = true;
cts.Cancel();
}
private void Form1_Load(object sender, EventArgs e)
{
button2.Enabled = false;
button1.Enabled = true;
Sdcb.FFmpeg.Utils.FFmpegLogger.LogWriter = (level, msg) => Console.WriteLine(msg);
}
}
}