/// <summary>
/// 转换一个视频文件
/// </summary>
/// <param name="itemSerialNumber"></param>
/// <param name="videoFilePath"></param>
/// <param name="userName"></param>
private static void ConvertVideo(string itemSerialNumber, string videoFilePath, string userName)
{
writeLog(string.Format("正在试图转换{0}", videoFilePath));
bool isCompleted = false;
string errorMessage = string.Empty;
try
{
//转flv
//取文件信息
//截图
//转flv小的视频
int nowStatus = (int)VideoStatus.UnConverted;
string exeFilePath = string.Empty;
string fileExt = Path.GetExtension(videoFilePath).ToLower();
string flvFilePath = Path.Combine(Path.Combine(videoPreviewPath, "Flv"), userName);
string imgFilePath = Path.Combine(Path.Combine(videoPreviewPath, "image"), userName);
string swfFilePath = Path.Combine(Path.Combine(videoPreviewPath, "swf"), userName);
string smallFlvFilePath = Path.Combine(Path.Combine(videoPreviewPath, "smallFlv"), userName);
if (!Directory.Exists(flvFilePath))
{
Directory.CreateDirectory(flvFilePath);
}
if (!Directory.Exists(imgFilePath))
{
Directory.CreateDirectory(imgFilePath);
}
if (!Directory.Exists(swfFilePath))
{
Directory.CreateDirectory(swfFilePath);
}
if (!Directory.Exists(smallFlvFilePath))
{
Directory.CreateDirectory(smallFlvFilePath);
}
flvFilePath = Path.Combine(flvFilePath, itemSerialNumber + ".flv");
imgFilePath = Path.Combine(imgFilePath, itemSerialNumber + ".jpg");
swfFilePath = Path.Combine(swfFilePath, itemSerialNumber + ".swf");
smallFlvFilePath = Path.Combine(smallFlvFilePath, itemSerialNumber + ".flv");
if (specialVideoFormats.Contains(fileExt))
{
exeFilePath = ffmpegRmFilePath;
}
else
{
exeFilePath = ffmpegFilePath;
}
writeLog(string.Format("使用这个Exe文件转换，{0}", exeFilePath + fileExt));
if (File.Exists(exeFilePath))
{
VideoController vc = new VideoController(exeFilePath);
if (fileExt.EndsWith("flv"))
{
//flv文件只拷贝过去即可
File.Copy(videoFilePath, flvFilePath, true);
}
else
{
//转换成flv
vc.ConvertToFlv(videoFilePath, flvFilePath);
}
//没有转成flv
if (!File.Exists(flvFilePath) || new FileInfo(flvFilePath).Length < 10)
{
File.Delete(flvFilePath);
//尝试用 mencoder 来转换，这部分先留着，看看能有多少不成功的
}
else
{
//截图，取第一帧图像
long imageSize = 0;
double startSecond = 0.001;
do
{
writeLog("截图\r\n" + vc.ConvertToThumbnails(videoFilePath, imgFilePath, startSecond));
imageSize = new FileInfo(imgFilePath).Length;
startSecond = startSecond + 1;
}while(imageSize < 4000 && startSecond < 11);
//当图片小于4000字节时，认为图片颜色过于单一，在下一秒继续取图，共取10次，
//也可以利用图片灰度来做比较
//转成小的flv
vc.ConvertToSmallFlv(flvFilePath, smallFlvFilePath);
}
//取文件信息
VideoFile v = vc.getVideoInfo(videoFilePath);
writeLog("获取文件的MetaData" + v.ClipLength);
//写回服务器
WS.VideoStorageService vss = new WS.VideoStorageService();
//vss.UpdateVideoMetaData(itemSerialNumber, v.ClipLength, v.Bitrate, v.ClipSize);
Dictionary <string, string> dct = new Dictionary <string, string>();
//通过反射得到所有的附加属性以及相应的值
Type t = v.GetType();
PropertyInfo[] piArray = t.GetProperties();
foreach (PropertyInfo pi in piArray)
{
if (pi.GetValue(v, null) != null)
{
dct.Add(pi.Name, pi.GetValue(v, null).ToString());
}
}
List <ResourceWS.DictionaryEntry> lst = new List <ResourceWS.DictionaryEntry>();
foreach (string key in dct.Keys)
{
ResourceWS.DictionaryEntry de = new ResourceWS.DictionaryEntry();
de.Key = key;
de.Value = dct[key];
lst.Add(de);
}
ResourceWS.DictionaryEntry[] result = lst.ToArray();
ResourceWS.ResourceService rs = new ResourceWS.ResourceService();
rs.insertResourceAttributes(itemSerialNumber, result);
if (File.Exists(flvFilePath) && File.Exists(imgFilePath))
{
nowStatus = (int)VideoStatus.Converted;
}
else
{
nowStatus = (int)VideoStatus.ConvertError;
}
//将结果更新到数据库中
vss.UpdateVideoStatus(itemSerialNumber, nowStatus);
}
else
{
errorMessage = string.Format("在转换文件{0}时，没有找到可执行程序：{1}", videoFilePath, exeFilePath);
writeLog(logFile, errorMessage);
}
}
catch (Exception e1)
{
writeLog(logFile, e1.StackTrace + e1.Message);
}
}