基于Libvlc库的视频录制功能简述(C#)

最近在学习libvlc库,如下讲述如何播放网络或本地视频并进行视频录制的功能:
一、先看效果:
1-1、主界面:首先Init环境初始化,然后可选择播放网络流或是本地视频文件;


1-2、若播放网络流,则在Network左边的textbox中输入网络流地址,并通过Select Save Path选择录像的存储目录;


1-3、点击REC即可进行录制,录制存储的地址即选择的存储目录,如下图:


1-4、点击RECing...后,可在存储目录下找到刚才存储的视频;

1-5、也可点击Location进行本地视频播放;


二、详细:
2-1:需要使用带有视频录制的libvlc库,可参考:https://download.csdn.net/download/avsuper/9919212;
2-2:MediaPlyaer接口编写,可参考:https://blog.csdn.net/lassewang/article/details/52240894,但是需要进行改写,如下:
①导入库函数进行添加:
     [DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true, CharSet = CharSet.Ansi)]
     internal static extern int libvlc_media_player_recorder_start(libvlc_media_player_t libvlc_media_player, IntPtr path);

     [DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
     internal static extern int libvlc_media_player_recorder_stop(libvlc_media_player_t libvlc_media_player);
如果喜欢改的话还可添加另一个函数(对于本例可不添加):
     [DllImport("libvlc", CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
     internal static extern void libvlc_media_add_option(libvlc_media_t p_md, String psz_option);
②共有函数中进行添加功能函数:

        ///


        /// 视频存储开始
        ///

        ///
        ///
        public static void Save_MediaPlayer(libvlc_media_player_t libvlc_media_player, string url)
        {
            IntPtr pMrl = IntPtr.Zero;
            try
            {
                if (url == null ||
                    libvlc_media_player == IntPtr.Zero ||
                    libvlc_media_player == null)
                {
                    return;
                }
                pMrl = StrToIntPtr(url);
                if (pMrl == null || pMrl == IntPtr.Zero)
                {
                    return;
                }
                SafeNativeMethods.libvlc_media_player_recorder_start(libvlc_media_player, pMrl);
            }
            catch (Exception)
            {
                
            }
        }
        ///
        /// 停止录像功能,存储
        ///

        ///
        public static void UnSave_MediaPlayer(libvlc_media_player_t libvlc_media_player)
        {
            try
            {
                if (libvlc_media_player == IntPtr.Zero ||
                    libvlc_media_player == null)
                {
                    return;
                }
                SafeNativeMethods.libvlc_media_player_recorder_stop(libvlc_media_player);
            }
            catch (Exception)
            {
                throw;
            }
        }
这样就可以使用,libvlc的录像功能了,只需调用Save_MediaPlaye和UnSave_MediaPlaye即可,(注:调用Save_MediaPlaye后并不会立即出现存储的视频,调用UnSave_MediaPlaye后就会在存储视频的地址找到存储好的视频)。

第一次写,有很多“规矩不了解,以后逐步进行完善。

源码:https://download.csdn.net/download/hopeless123/10311625
--------------------- 
 
原文:https://blog.csdn.net/hopeless123/article/details/79715298 
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