标签:bucket cpu mp4 string lse header blend ons not
WPF中使用第三方控件来直接进行录像的控件没有找到(aforgenet好像不维护了?WPFMediaKit好像只能实现摄像头拍照。收费的控件没有使用,不做评论。)
通过百度(感谢:https://www.cnblogs.com/giserlong88/p/11244779.html),确定了可以通过FFmpeg+Nginx+Vlc.DotNet.Wpf可以实现摄像头的录像保存、录像预览(有延时),实现方案是,通过FFmpeg来实现录像并推送到Nginx搭建的rtmp流媒体服务器,然后WPF通过Vlc.DotNet.Wpf来拉取rtmp流服务器的内容来实现视频预览。
具体代码如下:
首先去下载FFmpeg(http://ffmpeg.org/download.html),Nginx(http://nginx.org/en/download.html),Nuget上引用Vlc.DotNet.Wpf,下载其所需要的libvlc播放器
nginx-win-rtmp.conf配置文件内容如下:
#user nobody; # multiple workers works ! worker_processes 2; #error_log logs/error.log; #error_log logs/error.log notice; #error_log logs/error.log info; #pid logs/nginx.pid; #worker_rlimit_nofile 100000; #更改worker进程的最大打开文件数限制 #如果没设置的话, 这个值为操作系统的限制. #设置后你的操作系统和Nginx可以处理比“ulimit -a”更多的文件 #所以把这个值设高, 这样nginx就不会有“too many open files”问题了 events { worker_connections 8192;#设置可由一个worker进程同时打开的最大连接数 #如果设置了上面提到的worker_rlimit_nofile, 我们可以将这个值设得很高 # max value 32768, nginx recycling connections+registry optimization = # this.value * 20 = max concurrent connections currently tested with one worker # C1000K should be possible depending there is enough ram/cpu power # multi_accept on; } rtmp { server { listen 1935;#监听端口,若被占用,可以更改 chunk_size 4000;#上传flv文件块儿的大小 application live { #创建一个叫live的应用 live on;#开启live的应用 allow publish 127.0.0.1;# allow play all; } } } http { #include /nginx/conf/naxsi_core.rules; include mime.types; default_type application/octet-stream; #log_format main ‘$remote_addr:$remote_port - $remote_user [$time_local] "$request" ‘ # ‘$status $body_bytes_sent "$http_referer" ‘ # ‘"$http_user_agent" "$http_x_forwarded_for"‘; #access_log logs/access.log main; # # loadbalancing PHP # upstream myLoadBalancer { # server 127.0.0.1:9001 weight=1 fail_timeout=5; # server 127.0.0.1:9002 weight=1 fail_timeout=5; # server 127.0.0.1:9003 weight=1 fail_timeout=5; # server 127.0.0.1:9004 weight=1 fail_timeout=5; # server 127.0.0.1:9005 weight=1 fail_timeout=5; # server 127.0.0.1:9006 weight=1 fail_timeout=5; # server 127.0.0.1:9007 weight=1 fail_timeout=5; # server 127.0.0.1:9008 weight=1 fail_timeout=5; # server 127.0.0.1:9009 weight=1 fail_timeout=5; # server 127.0.0.1:9010 weight=1 fail_timeout=5; # least_conn; # } sendfile off; #tcp_nopush on; server_names_hash_bucket_size 128; ## Start: Timeouts ## client_body_timeout 10; client_header_timeout 10; keepalive_timeout 30; send_timeout 10; keepalive_requests 10; ## End: Timeouts ## #gzip on; server { listen 8088; server_name localhost; #charset koi8-r; #access_log logs/host.access.log main; ## Caching Static Files, put before first location #location ~* \.(jpg|jpeg|png|gif|ico|css|js)$ { # expires 14d; # add_header Vary Accept-Encoding; #} # For Naxsi remove the single # line for learn mode, or the ## lines for full WAF mode location / { #include /nginx/conf/mysite.rules; # see also http block naxsi include line ##SecRulesEnabled; ##DeniedUrl "/RequestDenied"; ##CheckRule "$SQL >= 8" BLOCK; ##CheckRule "$RFI >= 8" BLOCK; ##CheckRule "$TRAVERSAL >= 4" BLOCK; ##CheckRule "$XSS >= 8" BLOCK; root html; index index.html index.htm; } # For Naxsi remove the ## lines for full WAF mode, redirect location block used by naxsi ##location /RequestDenied { ## return 412; ##} ## Lua examples ! # location /robots.txt { # rewrite_by_lua ‘ # if ngx.var.http_host ~= "localhost" then # return ngx.exec("/robots_disallow.txt"); # end # ‘; # } #error_page 404 /404.html; # redirect server error pages to the static page /50x.html # error_page 500 502 503 504 /50x.html; location = /50x.html { root html; } # proxy the PHP scripts to Apache listening on 127.0.0.1:80 # #location ~ \.php$ { # proxy_pass http://127.0.0.1; #} # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000 # #location ~ \.php$ { # root html; # fastcgi_pass 127.0.0.1:9000; # single backend process # fastcgi_pass myLoadBalancer; # or multiple, see example above # fastcgi_index index.php; # fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; # include fastcgi_params; #} # deny access to .htaccess files, if Apache‘s document root # concurs with nginx‘s one # #location ~ /\.ht { # deny all; #} } # another virtual host using mix of IP-, name-, and port-based configuration # #server { # listen 8000; # listen somename:8080; # server_name somename alias another.alias; # location / { # root html; # index index.html index.htm; # } #} # HTTPS server # #server { # listen 443 ssl spdy; # server_name localhost; # ssl on; # ssl_certificate cert.pem; # ssl_certificate_key cert.key; # ssl_session_timeout 5m; # ssl_prefer_server_ciphers On; # ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # ssl_ciphers ECDH+AESGCM:ECDH+AES256:ECDH+AES128:ECDH+3DES:RSA+AESGCM:RSA+AES:RSA+3DES:!aNULL:!eNULL:!MD5:!DSS:!EXP:!ADH:!LOW:!MEDIUM; # location / { # root html; # index index.html index.htm; # } #} }
把下载的FFmpeg、Nginx和libvlc放到Debug目录下。
目录结构如下
Debug
FFmpeg
ffmpeg.exe
……
Nginx
nginx.exe
……
libvlc
win-x64
……
win-x86
……
新建一个WPF项目,在MainWindow.xaml主要处理启动Nginx和进行推送
<Window x:Class="VideTest.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" Title="MainWindow" Height="450" Width="800" Loaded="MainWindow_OnLoaded"> <Grid> <Grid.RowDefinitions> <RowDefinition Height="20"></RowDefinition> <RowDefinition Height="*"></RowDefinition> </Grid.RowDefinitions> <WrapPanel> <TextBox Name="SavePath" Text="D:\test.mp4" Width="94" HorizontalAlignment="Left"></TextBox> <TextBox Name="VideoName" Text="罗技高清网络摄像机 C930c" Width="94" HorizontalAlignment="Left"></TextBox> <TextBox Name="AudioName" Text="麦克风 (罗技高清网络摄像机 C930c)" Width="94" HorizontalAlignment="Left"></TextBox> <Button Content="1、启动视频监控" HorizontalAlignment="Left" VerticalAlignment="Top" Width="107" Click="ButtonStart_OnClick"/> <Button Content="2、开始录制" HorizontalAlignment="Left" VerticalAlignment="Top" Width="75" Click="ButtonSase_OnClick"/> <TextBlock Text="开始录制后大概5秒主界面就可以看到监控视频"></TextBlock> </WrapPanel> <Border Grid.Row="1"> <Image x:Name="img"></Image> </Border> </Grid> </Window>
文本框中的摄像头和麦克风,是使用下发的Load中的命令检测到的。
后台代码:
using System; using System.Diagnostics; using System.IO; using System.Reflection; using System.Threading.Tasks; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using Vlc.DotNet.Core; using Vlc.DotNet.Wpf; namespace VideTest { /// <summary> /// MainWindow.xaml 的交互逻辑 /// </summary> public partial class MainWindow : Window { private readonly string ffmpegPath = $"{AppDomain.CurrentDomain.BaseDirectory}FFmpeg/ffmpeg.exe"; private readonly string nginxPath = @"nginx.exe -c conf\nginx-win-rtmp.conf"; private VlcVideoSourceProvider sourceProvider; public MainWindow() { InitializeComponent(); } private void MediaPlayer_Log(object sender, VlcMediaPlayerLogEventArgs e) { var message = "libVlc : " + e.Level + e.Message + e.Module; Debug.WriteLine(message); } private void MainWindow_OnLoaded(object sender, RoutedEventArgs e) {
//var ffmpegPath = $"{AppDomain.CurrentDomain.BaseDirectory}FFmpeg/ffmpeg.exe"; //// 显示可用的音效设备 //var ffmpegArgument = " -list_devices true -f dshow -i dummy"; //var process = new System.Diagnostics.Process(); //var startInfo = new System.Diagnostics.ProcessStartInfo(); //startInfo.FileName = ffmpegPath; //startInfo.Arguments = ffmpegArgument; //startInfo.UseShellExecute = false; //startInfo.RedirectStandardOutput = true; //startInfo.RedirectStandardError = true; // 将 StandardErrorEncoding 改为 UTF-8后FFmpeg输出不会中文乱码 //startInfo.StandardErrorEncoding = System.Text.Encoding.UTF8; //process.EnableRaisingEvents = true; //process.StartInfo = startInfo; //process.Start(); // 显示FFMpeg输出的内容,从中取出视频和音频设备名称 //string output = process.StandardError.ReadToEnd(); //Debug.WriteLine(output); //process.WaitForExit();
} private void ButtonSase_OnClick(object sender, RoutedEventArgs e) { var file=new FileInfo(SavePath.Text); if(file.Exists) file.Delete(); var ffmpegArgument = $" -f dshow -i video=\"{VideoName.Text}\" -f dshow -i audio=\"{AudioName.Text}\" -vcodec libx264 -acodec aac -strict -2 \"{SavePath.Text}\" -f flv rtmp://127.0.0.1:1935/live/home"; Task.Run(() => { var process = new Process(); var startInfo = new ProcessStartInfo { FileName = ffmpegPath, Arguments = ffmpegArgument, UseShellExecute = true, RedirectStandardOutput = false }; process.StartInfo = startInfo; process.Start(); process.WaitForExit(); }); } private void ButtonStart_OnClick(object sender, RoutedEventArgs e) { Task.Run(() => { var process = new Process(); var startInfo = new ProcessStartInfo("cmd.exe") { WorkingDirectory= $@"{AppDomain.CurrentDomain.BaseDirectory}nginx", UseShellExecute = false, RedirectStandardInput = true }; process.StartInfo = startInfo; process.Start(); process.StandardInput.WriteLine(nginxPath); process.StandardInput.AutoFlush = true; process.WaitForExit(); }); Dispatcher?.Invoke(() => { var currentAssembly = Assembly.GetEntryAssembly(); var currentDirectory = new FileInfo(currentAssembly.Location).DirectoryName; var libDirectory = new DirectoryInfo(System.IO.Path.Combine(currentDirectory, "libvlc", IntPtr.Size == 4 ? "win-x86" : "win-x64")); sourceProvider = new VlcVideoSourceProvider(Dispatcher); sourceProvider.CreatePlayer(libDirectory); sourceProvider.MediaPlayer.Play("rtmp://127.0.0.1:1935/live/home"); sourceProvider.MediaPlayer.Log += MediaPlayer_Log; sourceProvider.MediaPlayer.Manager.SetFullScreen(sourceProvider.MediaPlayer.Manager.CreateMediaPlayer(), true); var bing = new Binding {Source = sourceProvider, Path = new PropertyPath("VideoSource")}; img.SetBinding(Image.SourceProperty, bing); }); MessageBox.Show("启动成功,请点击开始录制。"); } } }
这样按顺序点击1和2的按钮后,即可实现WPF的视频录制和预览录制的视频内容。
同时我们在APP.cs中重写退出事件,来在程序退出的时候结束Nginx进行。
public partial class App : Application { protected override void OnExit(ExitEventArgs e) { var process = new Process(); var startInfo = new ProcessStartInfo() { FileName = "taskkill", Arguments = " /f /im nginx.exe", UseShellExecute = false, RedirectStandardInput = true }; process.StartInfo = startInfo; process.Start(); process.WaitForExit(); } }
至此,我们就变现实现了WPF进行视频录制和预览录制的视频内容的功能。
标签:bucket cpu mp4 string lse header blend ons not
原文地址:https://www.cnblogs.com/wdw984/p/12286414.html