public OutputPackage GetPreviewImage(string inputPath)
{
VideoFile vf = null;
try
{
vf = new VideoFile(inputPath);
}
catch (Exception ex)
{
throw ex;
}
OutputPackage oo = GetPreviewImage(vf);
return(oo);
}
public OutputPackage ConvertToFLV(string inputPath)
{
VideoFile vf = null;
try
{
vf = new VideoFile(inputPath);
}
catch (Exception ex)
{
throw ex;
}
OutputPackage oo = ConvertToFLV(vf);
return(oo);
}
public OutputPackage ConvertToFLV(VideoFile input)
{
if (!input.infoGathered)
{
GetVideoInfo(input);
}
OutputPackage ou = new OutputPackage();
//set up the parameters for getting a previewimage
string filename = System.Guid.NewGuid().ToString() + ".jpg";
int secs;
//divide the duration in 3 to get a preview image in the middle of the clip
//instead of a black image from the beginning.
secs = (int)Math.Round(TimeSpan.FromTicks(input.Duration.Ticks / 3).TotalSeconds, 0);
string finalpath = Path.Combine(this.WorkingPath, filename);
string Params = string.Format("-i {0} {1} -vcodec mjpeg -ss {2} -vframes 1 -an -f rawvideo", input.Path, finalpath, secs);
string output = RunProcess(Params);
ou.RawOutput = output;
if (File.Exists(finalpath))
{
ou.PreviewImage = LoadImageFromFile(finalpath);
try
{
File.Delete(finalpath);
}
catch (Exception) { }
}
else
{ //try running again at frame 1 to get something
Params = string.Format("-i {0} {1} -vcodec mjpeg -ss {2} -vframes 1 -an -f rawvideo", input.Path, finalpath, 1);
output = RunProcess(Params);
ou.RawOutput = output;
if (File.Exists(finalpath))
{
ou.PreviewImage = LoadImageFromFile(finalpath);
try
{
File.Delete(finalpath);
}
catch (Exception) { }
}
}
finalpath = Path.Combine(this.WorkingPath, filename);
filename = System.Guid.NewGuid().ToString() + ".flv";
Params = string.Format("-i {0} -y -ar 22050 -ab 64 -f flv {1}", input.Path, finalpath);
output = RunProcess(Params);
if (File.Exists(finalpath))
{
ou.VideoStream = LoadMemoryStreamFromFile(finalpath);
try
{
File.Delete(finalpath);
}
catch (Exception) { }
}
return(ou);
}
public void GetVideoInfo(VideoFile input)
{
//set up the parameters for video info
string Params = string.Format("-i {0}", input.Path);
string output = RunProcess(Params);
input.RawInfo = output;
//get duration
Regex re = new Regex("[D|d]uration:.((\\d|:|\\.)*)");
Match m = re.Match(input.RawInfo);
if (m.Success)
{
string duration = m.Groups[1].Value;
string[] timepieces = duration.Split(new char[] { ':', '.' });
if (timepieces.Length == 4)
{
input.Duration = new TimeSpan(0, Convert.ToInt16(timepieces[0]), Convert.ToInt16(timepieces[1]), Convert.ToInt16(timepieces[2]), Convert.ToInt16(timepieces[3]));
}
}
//get audio bit rate
re = new Regex("[B|b]itrate:.((\\d|:)*)");
m = re.Match(input.RawInfo);
double kb = 0.0;
if (m.Success)
{
Double.TryParse(m.Groups[1].Value, out kb);
}
input.BitRate = kb;
//get the audio format
re = new Regex("[A|a]udio:.*");
m = re.Match(input.RawInfo);
if (m.Success)
{
input.AudioFormat = m.Value;
}
//get the video format
re = new Regex("[V|v]ideo:.*");
m = re.Match(input.RawInfo);
if (m.Success)
{
input.VideoFormat = m.Value;
}
//get the video format
re = new Regex("(\\d{2,3})x(\\d{2,3})");
m = re.Match(input.RawInfo);
if (m.Success)
{
int width = 0; int height = 0;
int.TryParse(m.Groups[1].Value, out width);
int.TryParse(m.Groups[2].Value, out height);
input.Width = width;
input.Height = height;
}
input.infoGathered = true;
}