/// <summary>
/// 运行mencoder的视频解码器转换
/// </summary>
public string MChangeFilePhy(string vFileName, string playFile, string imgFile)
{
string tool = MachineHelper.MapPath(VideoConvert.mencodertool);
if ((!System.IO.File.Exists(tool)) || (!System.IO.File.Exists(vFileName)))
{
return(string.Empty);
}
string flv_file = System.IO.Path.ChangeExtension(playFile, ".flv");
string FlvImgSize = VideoConvert.sizeOfImg;
System.Diagnostics.ProcessStartInfo FilestartInfo = new System.Diagnostics.ProcessStartInfo(tool);
FilestartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
FilestartInfo.Arguments = " " + vFileName + " -o " + flv_file + " -of lavf -lavfopts i_certify_that_my_video_stream_does_not_use_b_frames -oac mp3lame -lameopts abr:br=56 -ovc lavc -lavcopts vcodec=flv:vbitrate=200:mbd=2:mv0:trell:v4mv:cbp:last_pred=1:dia=-1:cmp=0:vb_strategy=1 -vf scale=" + widthOfFile + ":" + heightOfFile + " -ofps 12 -srate 22050";
try
{
System.Diagnostics.Process.Start(FilestartInfo);
CatchImg(flv_file, imgFile);
}
catch
{
return(string.Empty);
}
return(string.Empty);
}
public string CatchImg(string fileName, string imgFile)
{
string ffmpeg = MachineHelper.MapPath(ffmpegtool);
string flvImg = imgFile + ".jpg";
string flvImgSize = sizeOfImg;
var imgstartInfo = new System.Diagnostics.ProcessStartInfo(ffmpeg)
{
WindowStyle =
System.Diagnostics
.ProcessWindowStyle.Hidden,
Arguments =
" -i " + fileName
+ " -y -f image2 -ss 2 -vframes 1 -s "
+ flvImgSize + " " + flvImg
};
try
{
System.Diagnostics.Process.Start(imgstartInfo);
}
catch
{
return(string.Empty);
}
if (System.IO.File.Exists(flvImg))
{
return(flvImg);
}
return(string.Empty);
}
/// <summary>
/// 转换文件并保存在指定文件夹下
/// </summary>
/// <param name="fileName">上传视频文件的路径（原文件）</param>
/// <param name="playFile">转换后的文件的路径（网络播放文件）</param>
/// <param name="imgFile">从视频文件中抓取的图片路径</param>
/// <returns>成功:返回图片虚拟地址;失败:返回空字符串</returns>
public string ChangeFilePhy(string fileName, string playFile, string imgFile)
{
string ffmpeg = MachineHelper.MapPath(ffmpegtool);
if ((!System.IO.File.Exists(ffmpeg)) || (!System.IO.File.Exists(fileName)))
{
return(string.Empty);
}
string flvFile = System.IO.Path.ChangeExtension(playFile, ".flv");
var filestartInfo = new System.Diagnostics.ProcessStartInfo(ffmpeg)
{
WindowStyle =
System.Diagnostics
.ProcessWindowStyle.Hidden,
Arguments =
" -i " + fileName
+ " -ab 56 -ar 22050 -b 500 -r 15 -s "
+ widthOfFile + "x"
+ heightOfFile + " " + flvFile
};
try
{
System.Diagnostics.Process.Start(filestartInfo); // 转换
this.CatchImg(fileName, imgFile); // 截图
}
catch
{
return(string.Empty);
}
return(string.Empty);
}
/// <summary>
/// 将一个对象按XML序列化的方式写入到一个文件
/// </summary>
/// <remarks>
/// 2014年01月09日 11:47 Created By iceStone
/// </remarks>
/// <param name="obj">要序列化的对象</param>
/// <param name="virtualPath">虚拟路径</param>
/// <param name="encoding">编码方式</param>
/// <exception cref="System.ArgumentNullException">path</exception>
public static void SerializeToFile(object obj, string virtualPath, Encoding encoding)
{
if (string.IsNullOrEmpty(virtualPath))
{
throw new ArgumentNullException("virtualPath");
}
var path = MachineHelper.MapPath(virtualPath);
using (var file = new FileStream(path, FileMode.Create, FileAccess.Write))
{
Serialize(file, obj, encoding);
}
}
/// <summary>
/// 获取语言化字符串
/// </summary>
/// <param name="key">原文键</param>
/// <param name="culture">区域</param>
/// <returns>语言化字符串</returns>
public static string GetCultureString(this string key, string culture = "zh-CN")
{
if (resourceSet != null)
{
var res = resourceSet.GetString(key);
return(string.IsNullOrEmpty(res) ? key : res);
}
lock ("CultureHelper")
{
if (resourceSet != null)
{
var res = resourceSet.GetString(key);
return(string.IsNullOrEmpty(res) ? key : res);
}
if (HttpContext.Current == null)
{
return(key);
}
var vPath = string.Format(Config.GetString("lang_path_format"), culture);
var fPath = MachineHelper.MapPath(vPath);
if (!File.Exists(fPath))
{
fPath = MachineHelper.MapPath(Config.GetString("lang_default_path"));
}
if (!File.Exists(fPath))
{
return(key);
}
// using (var set = new ResourceSet(fPath))
// {
// //CacheHelper.SetCache(vPath, set);
// var res = set.GetString(key);
// return string.IsNullOrEmpty(res) ? key : res;
// }
resourceSet = new ResourceSet(fPath);
}
var res2 = resourceSet.GetString(key);
return(string.IsNullOrEmpty(res2) ? key : res2);
}
/// <summary>
/// 读入一个文件，并按XML的方式反序列化对象。
/// </summary>
/// <remarks>
/// 2014年01月09日 11:47 Created By iceStone
/// </remarks>
/// <typeparam name="T">结果对象类型</typeparam>
/// <param name="virtualPath">虚拟路径</param>
/// <param name="encoding">编码方式</param>
/// <returns>反序列化得到的对象</returns>
/// <exception cref="System.ArgumentNullException">
/// path
/// or
/// encoding
/// </exception>
public static T DeserializeFromFile <T>(string virtualPath, Encoding encoding)
{
if (string.IsNullOrEmpty(virtualPath))
{
throw new ArgumentNullException("virtualPath");
}
if (encoding == null)
{
throw new ArgumentNullException("encoding");
}
var path = MachineHelper.MapPath(virtualPath);
if (!File.Exists(path))
{
return(default(T));
}
string xml = File.ReadAllText(path, encoding);
return(Deserialize <T>(xml, encoding));
}
/// <summary>
/// 转换文件并保存在指定文件夹下
/// </summary>
/// <param name="fileName">上传视频文件的路径（原文件）</param>
/// <param name="playFile">转换后的文件的路径（网络播放文件）</param>
/// <param name="imgFile">从视频文件中抓取的图片路径</param>
/// <returns>成功:返回图片虚拟地址;失败:返回空字符串</returns>
public string ChangeFileVir(string fileName, string playFile, string imgFile)
{
string ffmpeg = MachineHelper.MapPath(VideoConvert.ffmpegtool);
if ((!System.IO.File.Exists(ffmpeg)) || (!System.IO.File.Exists(fileName)))
{
return(string.Empty);
}
string flv_img = System.IO.Path.ChangeExtension(MachineHelper.MapPath(imgFile), ".jpg");
string flv_file = System.IO.Path.ChangeExtension(MachineHelper.MapPath(playFile), ".flv");
string FlvImgSize = VideoConvert.sizeOfImg;
System.Diagnostics.ProcessStartInfo ImgstartInfo = new System.Diagnostics.ProcessStartInfo(ffmpeg);
ImgstartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
ImgstartInfo.Arguments = " -i " + fileName + " -y -f image2 -t 0.001 -s " + FlvImgSize + " " + flv_img;
System.Diagnostics.ProcessStartInfo FilestartInfo = new System.Diagnostics.ProcessStartInfo(ffmpeg);
FilestartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
FilestartInfo.Arguments = " -i " + fileName + " -ab 56 -ar 22050 -b 500 -r 15 -s " + widthOfFile + "x" + heightOfFile + " " + flv_file;
try
{
System.Diagnostics.Process.Start(FilestartInfo);
System.Diagnostics.Process.Start(ImgstartInfo);
}
catch
{
return(string.Empty);
}
///注意:图片截取成功后,数据由内存缓存写到磁盘需要时间较长,大概在3,4秒甚至更长;
///这儿需要延时后再检测,我服务器延时8秒,即如果超过8秒图片仍不存在,认为截图失败;
if (System.IO.File.Exists(flv_img))
{
return(flv_img);
}
return(string.Empty);
}
