c#调用VLC播放视频，rtsp流

c# 使用VLC播放视频，监控视频

最近公司要做一个监控视频的播放页面，让我用VLC做一个，就再网上找资料，找了很多，大部给的代码都是可以的，但是要学会自己去拼装，好多都是要用积分下载，我也下载了几个，感觉都是可以直接播放的，然后自己再封装一下就可以了，唯一一个地方就是屏幕大小的问题，这个需要自己写，还有就是一个延迟问题，每次都是延迟五秒，不知道为什么…


//----------------------------------------------------------------*/using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Runtime.InteropServices;
using System.Runtime.ExceptionServices;
using System.Security;
using System.IO;
using System.Threading;namespace VclPlayers
{using libvlc_media_t = System.IntPtr;using libvlc_media_player_t = System.IntPtr;using libvlc_instance_t = System.IntPtr;public class VLCPlayer{#region 全局变量//数组转换为指针  internal struct PointerToArrayOfPointerHelper{[MarshalAs(UnmanagedType.ByValArray, SizeConst = 11)]public IntPtr[] pointers;}//vlc库启动参数配置  private static string pluginPath = System.Environment.CurrentDirectory + "\\plugins\\";// private static string pluginPath = "D:\\VLCTools\\plugins\\";private static string plugin_arg = "--plugin-path=" + pluginPath;//用于播放节目时，转录节目  //private static string program_arg = "--sout=#duplicate{dst=std{access=file,mux=ts,dst=d:/test.ts}}";  private static string[] arguments = { "-I", "dummy", "--ignore-config", "--video-title",  plugin_arg };//, program_arg };  //private static string[] arguments = { "--verbose=2", "--network-caching=300", "--no-snapshot-preview" ,plugin_arg};#region 结构体public struct libvlc_media_stats_t{/* Input */public int i_read_bytes;public float f_input_bitrate;/* Demux */public int i_demux_read_bytes;public float f_demux_bitrate;public int i_demux_corrupted;public int i_demux_discontinuity;/* Decoders */public int i_decoded_video;public int i_decoded_audio;/* Video Output */public int i_displayed_pictures;public int i_lost_pictures;/* Audio output */public int i_played_abuffers;public int i_lost_abuffers;/* Stream output */public int i_sent_packets;public int i_sent_bytes;public float f_send_bitrate;}#endregion#endregion#region 私有变量private libvlc_instance_t lit;private libvlc_media_player_t lmpt;#endregion#region 公有函数/// <summary>/// 播放网络视频流/// </summary>/// <param name="url">url地址</param>/// <param name="handle">显示控件句柄</param>/// <returns>true：播放成功；false：播放失败</returns>public bool playUrl(string url,IntPtr handle){lit = Create_Media_Instance();lmpt = Create_MediaPlayer(lit, handle);//播放网络视频return NetWork_Media_Play(lit, lmpt, url);   //播放本地视频// return Local_Media_Play(lit, lmpt, url);}/// <summary>/// 播放本地视频/// </summary>/// <param name="path">视频路径</param>/// <param name="handle">显示控件句柄</param>/// <returns>true：播放成功；false：播放失败</returns>public bool playLocalVideo(string path, IntPtr handle){lit = Create_Media_Instance();lmpt = Create_MediaPlayer(lit, handle);return Local_Media_Play(lit, lmpt, path);}/// <summary>/// 释放VLC资源/// </summary>/// <returns>true：释放；false：失败</returns>public bool release(){try{MediaPlayer_Stop(lmpt);// Release_Media_Instance(lit);Release_MediaPlayer(lmpt);return true;}catch(Exception ex){return false;}}/// <summary>/// 是否正在播放/// </summary>/// <returns></returns>public bool IsPlaying(){return MediaPlayer_IsPlaying(lmpt);}/// <summary>/// 停止播放/// </summary>public void Stop(){MediaPlayer_Stop(lmpt);}/// <summary>/// 获得视频时长/// </summary>/// <param name="url"></param>/// <returns></returns>public double Durations(string url) {return Duration(lit,url);}/// <summary>/// 暂停播放/// </summary>public void Pause() {MediaPlayer_Pause(lmpt);}/// <summary>/// 播放/// </summary>public void PlayU() {Play(lmpt);}/// <summary>/// 设置播放时间/// </summary>/// <param name="seekTime"></param>public void SetTime(double seekTime) {if (lmpt != IntPtr.Zero) {SafeNativeMethods.libvlc_media_player_set_time(lmpt,(Int64)seekTime*1000);}}public void Aspect(string aspects) {if (lmpt != IntPtr.Zero){SafeNativeMethods.libvlc_video_set_aspect_ratio(lmpt,aspects.ToCharArray());}}/// <summary>/// 获得播放时间/// </summary>/// <returns></returns>public double GetTime() {double seekTime = 0;if (lmpt != IntPtr.Zero) {seekTime =  SafeNativeMethods.libvlc_media_player_get_time(lmpt);}return seekTime;}/// <summary>///获取屏幕参数/// </summary>/// <returns></returns>public int GetFullscreen(){return SafeNativeMethods.libvlc_get_fullscreen(lmpt);}public bool SetFullscreen(int screen) {return SetFullScreen(lmpt,screen);}/// <summary>/// 录制快照/// </summary>/// <param name="path"></param>/// <param name="name"></param>/// <returns></returns>public bool TakeSnapshots(string path,string name) {return TakeSnapShot(lmpt,path,name);}#endregion#region 私有函数/// <summary>  /// 创建VLC播放资源索引  /// </summary>  /// <param name="arguments"></param>  /// <returns></returns>  private libvlc_instance_t Create_Media_Instance(){libvlc_instance_t libvlc_instance = IntPtr.Zero;IntPtr argvPtr = IntPtr.Zero;try{if (arguments.Length == 0 ||arguments == null){return IntPtr.Zero;}//将string数组转换为指针  argvPtr = StrToIntPtr(arguments);if (argvPtr == null || argvPtr == IntPtr.Zero){return IntPtr.Zero;}//设置启动参数  libvlc_instance = SafeNativeMethods.libvlc_new(arguments.Length, argvPtr);if (libvlc_instance == null || libvlc_instance == IntPtr.Zero){return IntPtr.Zero;}return libvlc_instance;}catch{return IntPtr.Zero;}}/// <summary>  /// 释放VLC播放资源索引  /// </summary>  /// <param name="libvlc_instance">VLC 全局变量</param>  private void Release_Media_Instance(libvlc_instance_t libvlc_instance){try{if (libvlc_instance != IntPtr.Zero ||libvlc_instance != null){SafeNativeMethods.libvlc_release(libvlc_instance);}libvlc_instance = IntPtr.Zero;}catch (Exception){libvlc_instance = IntPtr.Zero;}}/// <summary>  /// 创建VLC播放器  /// </summary>  /// <param name="libvlc_instance">VLC 全局变量</param>  /// <param name="handle">VLC MediaPlayer需要绑定显示的窗体句柄</param>  /// <returns></returns>  private  libvlc_media_player_t Create_MediaPlayer(libvlc_instance_t libvlc_instance, IntPtr handle){libvlc_media_player_t libvlc_media_player = IntPtr.Zero;try{if (libvlc_instance == IntPtr.Zero ||libvlc_instance == null ||handle == IntPtr.Zero ||handle == null){return IntPtr.Zero;}//创建播放器  libvlc_media_player = SafeNativeMethods.libvlc_media_player_new(libvlc_instance);if (libvlc_media_player == null || libvlc_media_player == IntPtr.Zero){return IntPtr.Zero;}//设置播放窗口              SafeNativeMethods.libvlc_media_player_set_hwnd(libvlc_media_player, (int)handle);return libvlc_media_player;}catch{SafeNativeMethods.libvlc_media_player_release(libvlc_media_player);return IntPtr.Zero;}}/// <summary>  /// 释放媒体播放器  /// </summary>  /// <param name="libvlc_media_player">VLC MediaPlayer变量</param>  private void Release_MediaPlayer(libvlc_media_player_t libvlc_media_player){try{if (libvlc_media_player != IntPtr.Zero ||libvlc_media_player != null){if (SafeNativeMethods.libvlc_media_player_is_playing(libvlc_media_player)){SafeNativeMethods.libvlc_media_player_stop(libvlc_media_player);}SafeNativeMethods.libvlc_media_player_release(libvlc_media_player);}libvlc_media_player = IntPtr.Zero;}catch (Exception){libvlc_media_player = IntPtr.Zero;}}/// <summary>  /// 播放网络媒体  /// </summary>  /// <param name="libvlc_instance">VLC 全局变量</param>  /// <param name="libvlc_media_player">VLC MediaPlayer变量</param>  /// <param name="url">网络视频URL，支持http、rtp、udp等格式的URL播放</param>  /// <returns></returns>  private bool NetWork_Media_Play(libvlc_instance_t libvlc_instance, libvlc_media_player_t libvlc_media_player, string url){IntPtr pMrl = IntPtr.Zero;libvlc_media_t libvlc_media = IntPtr.Zero;try{if (url == null ||libvlc_instance == IntPtr.Zero ||libvlc_instance == null ||libvlc_media_player == IntPtr.Zero ||libvlc_media_player == null){return false;}pMrl = StrToIntPtr(url);if (pMrl == null || pMrl == IntPtr.Zero){return false;}//播放网络文件  libvlc_media = SafeNativeMethods.libvlc_media_new_location(libvlc_instance, pMrl);if (libvlc_media == null || libvlc_media == IntPtr.Zero){return false;}//将Media绑定到播放器上  SafeNativeMethods.libvlc_media_player_set_media(libvlc_media_player, libvlc_media);//释放libvlc_media资源  SafeNativeMethods.libvlc_media_release(libvlc_media);libvlc_media = IntPtr.Zero;if (0 != SafeNativeMethods.libvlc_media_player_play(libvlc_media_player)){return false;}//休眠指定时间  Thread.Sleep(500);return true;}catch (Exception){//释放libvlc_media资源  if (libvlc_media != IntPtr.Zero){SafeNativeMethods.libvlc_media_release(libvlc_media);}libvlc_media = IntPtr.Zero;return false;}}/// <summary>/// 获得视频时间/// </summary>/// <param name="libvlc_instance"></param>/// <param name="url"></param>/// <returns></returns>private double Duration(libvlc_instance_t libvlc_instance,string url) {double duration_ = 0;libvlc_media_t libvlc_media = IntPtr.Zero;IntPtr pMrl = IntPtr.Zero;pMrl = StrToIntPtr(url);if (pMrl == null || pMrl == IntPtr.Zero){return duration_;}libvlc_media = SafeNativeMethods.libvlc_media_new_path(libvlc_instance, pMrl);SafeNativeMethods.libvlc_media_parse(libvlc_media);duration_ = SafeNativeMethods.libvlc_media_get_duration(libvlc_media);return duration_;}/// <summary>/// 播放本地视频/// </summary>/// <param name="libvlc_instance"></param>/// <param name="libvlc_media_player"></param>/// <param name="url"></param>/// <returns></returns>private bool Local_Media_Play(libvlc_instance_t libvlc_instance, libvlc_media_player_t libvlc_media_player, string url){IntPtr pMrl = IntPtr.Zero;libvlc_media_t libvlc_media = IntPtr.Zero;try{if (url == null ||libvlc_instance == IntPtr.Zero ||libvlc_instance == null ||libvlc_media_player == IntPtr.Zero ||libvlc_media_player == null){return false;}pMrl = StrToIntPtr(url);if (pMrl == null || pMrl == IntPtr.Zero){return false;}//播放本地视频  libvlc_media = SafeNativeMethods.libvlc_media_new_path(libvlc_instance, pMrl);if (libvlc_media == null || libvlc_media == IntPtr.Zero){return false;}//将Media绑定到播放器上  SafeNativeMethods.libvlc_media_player_set_media(libvlc_media_player, libvlc_media);//释放libvlc_media资源  SafeNativeMethods.libvlc_media_release(libvlc_media);libvlc_media = IntPtr.Zero;if (0 != SafeNativeMethods.libvlc_media_player_play(libvlc_media_player)){return false;}//休眠指定时间  Thread.Sleep(500);return true;}catch (Exception){//释放libvlc_media资源  if (libvlc_media != IntPtr.Zero){SafeNativeMethods.libvlc_media_release(libvlc_media);}libvlc_media = IntPtr.Zero;return false;}}/// <summary>  /// 暂停或恢复视频  /// </summary>  /// <param name="libvlc_media_player">VLC MediaPlayer变量</param>  /// <returns></returns>  private bool MediaPlayer_Pause(libvlc_media_player_t libvlc_media_player){try{if (libvlc_media_player == IntPtr.Zero ||libvlc_media_player == null){return false;}if (SafeNativeMethods.libvlc_media_player_can_pause(libvlc_media_player)){SafeNativeMethods.libvlc_media_player_pause(libvlc_media_player);return true;}else{return false;}}catch (Exception){return false;}}/// <summary>  /// 停止播放  /// </summary>  /// <param name="libvlc_media_player">VLC MediaPlayer变量</param>  /// <returns></returns>  private bool MediaPlayer_Stop(libvlc_media_player_t libvlc_media_player){try{if (libvlc_media_player == IntPtr.Zero ||libvlc_media_player == null){return false;}SafeNativeMethods.libvlc_media_player_stop(libvlc_media_player);return true;}catch (Exception){return false;}}/// <summary>  /// VLC MediaPlayer是否在播放  /// </summary>  /// <param name="libvlc_media_player">VLC MediaPlayer变量</param>  /// <returns></returns>  private bool MediaPlayer_IsPlaying(libvlc_media_player_t libvlc_media_player){try{if (libvlc_media_player == IntPtr.Zero ||libvlc_media_player == null){return false;}return SafeNativeMethods.libvlc_media_player_is_playing(libvlc_media_player);}catch (Exception){return false;}}/// <summary>  /// 录制快照  /// </summary>  /// <param name="libvlc_media_player">VLC MediaPlayer变量</param>  /// <param name="path">快照要存放的路径</param>  /// <param name="name">快照保存的文件名称</param>  /// <returns></returns>  private bool TakeSnapShot(libvlc_media_player_t libvlc_media_player, string path, string name){try{string snap_shot_path = null;if (libvlc_media_player == IntPtr.Zero ||libvlc_media_player == null){return false;}if (!Directory.Exists(path)){Directory.CreateDirectory(path);}snap_shot_path = path + "\\" + name;if (0 == SafeNativeMethods.libvlc_video_take_snapshot(libvlc_media_player, 0, snap_shot_path.ToCharArray(), 0, 0)){return true;}else{return false;}}catch (Exception){return false;}}/// <summary>  /// 获取信息  /// </summary>  /// <param name="libvlc_media_player"></param>  /// <returns></returns>  private bool GetMedia(libvlc_media_player_t libvlc_media_player){libvlc_media_t media = IntPtr.Zero;try{if (libvlc_media_player == IntPtr.Zero ||libvlc_media_player == null){return false;}media = SafeNativeMethods.libvlc_media_player_get_media(libvlc_media_player);if (media == IntPtr.Zero || media == null){return false;}else{return true;}}catch (Exception){return false;}}/// <summary>  /// 获取已经显示的图片数  /// </summary>  /// <param name="libvlc_media_player"></param>  /// <returns></returns>  private int GetDisplayedPictures(libvlc_media_player_t libvlc_media_player){libvlc_media_t media = IntPtr.Zero;libvlc_media_stats_t media_stats = new libvlc_media_stats_t();try{if (libvlc_media_player == IntPtr.Zero ||libvlc_media_player == null){return 0;}media = SafeNativeMethods.libvlc_media_player_get_media(libvlc_media_player);if (media == IntPtr.Zero || media == null){return 0;}if (1 == SafeNativeMethods.libvlc_media_get_stats(media, ref media_stats)){return media_stats.i_displayed_pictures;}else{return 0;}}catch (Exception){return 0;}}/// <summary>  /// 设置全屏  /// </summary>  /// <param name="libvlc_media_player"></param>  /// <param name="isFullScreen"></param>  private bool SetFullScreen(libvlc_media_player_t libvlc_media_player, int isFullScreen){try{if (libvlc_media_player == IntPtr.Zero ||libvlc_media_player == null){return false;}SafeNativeMethods.libvlc_set_fullscreen(libvlc_media_player, isFullScreen);return true;}catch (Exception){return false;}}/// <summary>/// 恢复播放/// </summary>private void Play(libvlc_media_player_t libvlc_mediaplayer) {if(libvlc_mediaplayer != IntPtr.Zero){SafeNativeMethods.libvlc_media_player_play(libvlc_mediaplayer);}}//将string []转换为IntPtr  private static IntPtr StrToIntPtr(string[] args){try{IntPtr ip_args = IntPtr.Zero;PointerToArrayOfPointerHelper argv = new PointerToArrayOfPointerHelper();argv.pointers = new IntPtr[11];for (int i = 0; i < args.Length; i++){argv.pointers[i] = Marshal.StringToHGlobalAnsi(args[i]);}int size = Marshal.SizeOf(typeof(PointerToArrayOfPointerHelper));ip_args = Marshal.AllocHGlobal(size);Marshal.StructureToPtr(argv, ip_args, false);return ip_args;}catch (Exception){return IntPtr.Zero;}}//将string转换为IntPtr  private static IntPtr StrToIntPtr(string url){try{if (string.IsNullOrEmpty(url)){return IntPtr.Zero;}IntPtr pMrl = IntPtr.Zero;byte[] bytes = Encoding.UTF8.GetBytes(url);pMrl = Marshal.AllocHGlobal(bytes.Length + 1);Marshal.Copy(bytes, 0, pMrl, bytes.Length);Marshal.WriteByte(pMrl, bytes.Length, 0);return pMrl;}catch (Exception){return IntPtr.Zero;}}#endregion#region 导入库函数[SuppressUnmanagedCodeSecurity]internal static class SafeNativeMethods{// 创建一个libvlc实例，它是引用计数的  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern libvlc_instance_t libvlc_new(int argc, IntPtr argv);// 释放libvlc实例  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern void libvlc_release(libvlc_instance_t libvlc_instance);//获取libvlc的版本  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern String libvlc_get_version();//从视频来源(例如http、rtsp)构建一个libvlc_meida  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern libvlc_media_t libvlc_media_new_location(libvlc_instance_t libvlc_instance, IntPtr path);//从本地文件路径构建一个libvlc_media  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern libvlc_media_t libvlc_media_new_path(libvlc_instance_t libvlc_instance, IntPtr path);//释放libvlc_media  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern void libvlc_media_release(libvlc_media_t libvlc_media_inst);// 创建一个空的播放器  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern libvlc_media_player_t libvlc_media_player_new(libvlc_instance_t libvlc_instance);//从libvlc_media构建播放器  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern libvlc_media_player_t libvlc_media_player_new_from_media(libvlc_media_t libvlc_media);//释放播放器资源  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern void libvlc_media_player_release(libvlc_media_player_t libvlc_mediaplayer);// 将视频(libvlc_media)绑定到播放器上  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern void libvlc_media_player_set_media(libvlc_media_player_t libvlc_media_player, libvlc_media_t libvlc_media);// 设置图像输出的窗口  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern void libvlc_media_player_set_hwnd(libvlc_media_player_t libvlc_mediaplayer, Int32 drawable);//播放器播放  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern int libvlc_media_player_play(libvlc_media_player_t libvlc_mediaplayer);//播放器暂停  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern void libvlc_media_player_pause(libvlc_media_player_t libvlc_mediaplayer);//播放器停止  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern void libvlc_media_player_stop(libvlc_media_player_t libvlc_mediaplayer);// 解析视频资源的媒体信息(如时长等)  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern void libvlc_media_parse(libvlc_media_t libvlc_media);// 返回视频的时长(必须先调用libvlc_media_parse之后，该函数才会生效)  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern Int64 libvlc_media_get_duration(libvlc_media_t libvlc_media);// 当前播放时间  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern Int64 libvlc_media_player_get_time(libvlc_media_player_t libvlc_mediaplayer);// 设置播放时间  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern void libvlc_media_player_set_time(libvlc_media_player_t libvlc_mediaplayer, Int64 time);// 获取音量  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern int libvlc_audio_get_volume(libvlc_media_player_t libvlc_media_player);//设置音量  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern void libvlc_audio_set_volume(libvlc_media_player_t libvlc_media_player, int volume);// 设置全屏  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern void libvlc_set_fullscreen(libvlc_media_player_t libvlc_media_player, int isFullScreen);[DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern int libvlc_get_fullscreen(libvlc_media_player_t libvlc_media_player);[DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern void libvlc_toggle_fullscreen(libvlc_media_player_t libvlc_media_player);//判断播放时是否在播放  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern bool libvlc_media_player_is_playing(libvlc_media_player_t libvlc_media_player);//判断播放时是否能够Seek  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern bool libvlc_media_player_is_seekable(libvlc_media_player_t libvlc_media_player);//判断播放时是否能够Pause  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern bool libvlc_media_player_can_pause(libvlc_media_player_t libvlc_media_player);//判断播放器是否可以播放  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern int libvlc_media_player_will_play(libvlc_media_player_t libvlc_media_player);//进行快照  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern int libvlc_video_take_snapshot(libvlc_media_player_t libvlc_media_player, int num, char[] filepath, int i_width, int i_height);//获取Media信息  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern libvlc_media_t libvlc_media_player_get_media(libvlc_media_player_t libvlc_media_player);//获取媒体信息  [DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern int libvlc_media_get_stats(libvlc_media_t libvlc_media, ref libvlc_media_stats_t lib_vlc_media_stats);[DllImport(@"libvlc.DLL", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]internal static extern void libvlc_video_set_aspect_ratio(libvlc_media_player_t libvlc_media_player,char[] aspect);}#endregion}
}

需要的这个可以直接复制，然后可以写一个测试类，这里我是用WINFORM页面测试的。可以自己去测试。
比如要播放网络流视频。

 private void  Play(){vlcplayer() vlc = new vlcplayer();vlc.playUrl("url",this.panel.hand());// 这里的这个panel是winform窗体的一个panel的控件// 可以在网上找一些测试地址 https://video-dev.github.io/streams/x36xhzz/x36xhzz.m3u8//通常都是用来播放监控的rtsp流vlc.Aspect("4:3");//这个是设置屏幕比的`
}

 /// <summary>/// 根据屏幕自适应/// </summary>/// <param name="tags">屏幕占比</param>private void FullScreenChange(string tags) {Action action = () => {vlc2.Aspect(tags);};action.Invoke();}

如果要拖动窗口，可以这样。其他的方法我都打注释，应该还是很好理解的。好了留给自己以后忘记了学习，还有这个延迟怎么搞… 最后还是要下载一个VLC播放器，安装好，找到路径，把plugins文件夹，libvlc.dll,libvlccore.dll 复制一份到DEBUG文件下

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