/// <summary>
/// 向前连接视频文件
/// </summary>
/// <param name="file">目标文件</param>
/// <returns></returns>
public Video PushFront(Video file, Quality Quality)
{
var src = new List <string>();
src.Add(file._Source);
src.Add(_Source);
var fname = Path.GetTempPath() + "pomelo_" + Guid.NewGuid().ToString().Replace("-", "") + Path.GetExtension(_Source);
try
{
MediaHelper.Concat(src, fname, Quality);
}
catch
{
return(null);
}
var ret = new Video(fname);
ret.IsTemp = true;
return(ret);
}
/// <summary>
/// 抽取整个影片帧
/// </summary>
/// <param name="timeoff">时间（秒）</param>
/// <returns></returns>
public List <Image> GetFrames(int timeoff = 1)
{
var result = new List <Image>();
for (var i = 0; i < Info.Duration.TotalSeconds; i += timeoff)
{
try
{
var fname = Path.GetTempPath() + "pomelo_" + Guid.NewGuid().ToString().Replace("-", "") + ".jpg";
System.IO.File.WriteAllBytes(fname, MediaHelper.GetFrame(_Source, i));
var frame = new Image(fname);
frame.IsTemp = true;
result.Add(frame);
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine("System caught an exception:");
System.Diagnostics.Debug.WriteLine(e.ToString());
}
}
return(result);
}