public static VideoResourceItem AddVideoResource(string filePath, BaseScheduleResourceContainer resourceContainer)
{
var resourceItem = resourceContainer.AddResource <VideoResourceItem>();
if (!Directory.Exists(resourceItem.ResourceFolderPath))
{
Directory.CreateDirectory(resourceItem.ResourceFolderPath);
}
var sourceFilePath = Path.Combine(resourceItem.ResourceFolderPath,
String.Format("{0}{1}", VideoResourceItem.VideoSourceFileName, Path.GetExtension(filePath)));
File.Copy(filePath, sourceFilePath, true);
var dataFilePath = Path.Combine(resourceItem.ResourceFolderPath, VideoResourceItem.VideoSourceDataFileName);
ExtractVideoInfo(sourceFilePath, dataFilePath);
var videoData = FFMpegData.LoadFromFile(dataFilePath);
GenerateThumbnails(sourceFilePath, resourceItem.ResourceFolderPath, VideoResourceItem.VideoThumbnailFilePrefixName, videoData);
return(resourceItem);
}
private static void GenerateThumbnails(
string sourceFilePath,
string destinationPath,
string thumbnailFileNamePrefix,
FFMpegData ffMpegData)
{
var allowToExit = false;
var converterPath = Path.Combine(UtilitiesPath, "ffmpeg.exe");
var destinationOutputFilePath = Path.Combine(destinationPath, String.Format("{0}%d.png", thumbnailFileNamePrefix));
if (!File.Exists(sourceFilePath) || !File.Exists(converterPath))
{
return;
}
int startDelay;
int endDelay;
string imageExtractOption = "-vf \"{0},scale=-1:'min(ih,360)'\"";
if (ffMpegData.Duration < 1)
{
startDelay = 5;
endDelay = 5;
imageExtractOption = String.Format(imageExtractOption, "fps=1") + " -vframes 1";
}
else if (ffMpegData.Duration < 10)
{
startDelay = 1;
endDelay = 0;
imageExtractOption = String.Format(imageExtractOption, "fps=1");
}
else if (ffMpegData.Duration < 30)
{
startDelay = 5;
endDelay = 2;
imageExtractOption = String.Format(imageExtractOption, "fps=1");
}
else if (ffMpegData.Duration < 180)
{
startDelay = 5;
endDelay = 5;
imageExtractOption = String.Format(imageExtractOption, "fps=1/2");
}
else if (ffMpegData.Duration < 300)
{
startDelay = 5;
endDelay = 5;
imageExtractOption = String.Format(imageExtractOption, "fps=1/6");
}
else
{
startDelay = 7;
endDelay = 7;
imageExtractOption = String.Format(imageExtractOption, "fps=1/30");
}
var targetDuration = ffMpegData.Duration - startDelay - endDelay;
var videoConverter = new Process
{
StartInfo = new ProcessStartInfo(
converterPath,
String.Format("-i \"{0}\" -ss {2} -t {3} {4} \"{1}\"",
sourceFilePath,
destinationOutputFilePath,
startDelay,
targetDuration,
imageExtractOption
)
)
{
UseShellExecute = false,
RedirectStandardError = false,
WindowStyle = ProcessWindowStyle.Hidden,
RedirectStandardOutput = false,
CreateNoWindow = true,
},
EnableRaisingEvents = true
};
videoConverter.Exited += (converterSender, converterE) =>
{
allowToExit = true;
};
videoConverter.Start();
while (!allowToExit)
{
Thread.Sleep(2000);
}
}
