public override string GenerateThumbnail()
{
// Get temp path where thumbnail should be stored
string outputPath = GetTempFilename("jpg");
// Get actual video dimensions
m_Logger.DebugFormat("Video dimensions are: {0}x{1}", m_Width, m_Height);
// Get dimensions of the thumbnail to be generated
Size dimensions = GetAspectImageSize(m_Width, m_Height, ThumbnailSize.Width, ThumbnailSize.Height);
m_Logger.DebugFormat("Thumbnail will be resized to: {0}x{1}", dimensions.Width, dimensions.Height);
// Get settings
string ffmpeg = GetSetting("FFmpegExecutablePath");
string args = GetSetting("FFmpegThumbnailArgs");
// Replace keywords
args = args.Replace("[INPUT]", InputPath.WrapInQuotes());
args = args.Replace("[OUTPUT]", outputPath.WrapInQuotes());
args = args.Replace("[WIDTH]", dimensions.Width.ToString());
args = args.Replace("[HEIGHT]", dimensions.Height.ToString());
// Execute FFmpeg command line
CommandLineExecuter.Execute(ffmpeg, args);
return(outputPath);
}
public override string GeneratePreview()
{
// Get the preview file extension, assume same as input file
string extension = (Path.GetExtension(InputPath) ?? string.Empty).ToLower();
// Only WAV and MP3 are allowed, so default to MP3
// if the input file is neither of these.
extension = GetExtensionGenerated(extension);
// Get the temp output path where generated file should be saved
string outputPath = GetTempFilename(extension);
// Get settings
string ffmpeg = GetSetting("FFmpegExecutablePath");
int duration = GetSetting("CropDuration", 0);
if (duration == 0)
{
File.Copy(InputPath, outputPath, true);
}
else
{
string args = string.Format("-t {2} -acodec copy -i \"{0}\" \"{1}\"", InputPath, outputPath, duration);
CommandLineExecuter.Execute(ffmpeg, args);
}
return(outputPath);
}
private void ResizeImage(string inputFile, string outputFile, int width, int height, bool keepAspectRatio)
{
// Paths to command line utils required
string colorspaceProfileCMYKPath = Settings.GetValue("ColorspaceProfileCMYK");
string colorspaceProfileRGBPath = Settings.GetValue("ColorspaceProfileRGB");
string imageMagickConvertPath = Settings.GetValue("ImageMagickConvert");
// Get the image colorspace (CMYK or RGB)
string colorspace = GetImageColorspace(inputFile);
// Assume image is RGB
string arguments = "-colorspace RGB -quality 90 -resize " + width + "x" + height + (keepAspectRatio ? " " : "! ") + "\"" + inputFile + "\"[0] \"" + outputFile + "\"";
// Unless the colorspace returned CMYK
if (colorspace.Contains("CMYK"))
{
arguments = " +profile icm -profile " + colorspaceProfileCMYKPath.WrapInQuotes() + " -profile " + colorspaceProfileRGBPath.WrapInQuotes() + " -quality 90 -resize " + width + "x" + height + (keepAspectRatio ? " " : "! ") + "\"" + inputFile + "\"[0] \"" + outputFile + "\"";
}
// Initialize exit code
int exitCode;
// Execute the command line
CommandLineExecuter.Execute(imageMagickConvertPath, arguments, out exitCode);
// Check exit code
if (exitCode != 0)
{
throw new SystemException(string.Format("Error resizing image: {0}. Exit code: {1}", inputFile, exitCode));
}
}
private string GetImageColorspace(string imagePath)
{
try
{
string imageMagickIdentifyPath = Settings.GetValue("ImageMagickIdentify");
int exitCode;
string args = string.Format("-format %r \"{0}\"", imagePath);
string output = CommandLineExecuter.Execute(imageMagickIdentifyPath, args, out exitCode);
if (exitCode == 0)
{
return(output);
}
m_Logger.WarnFormat("ImageMagickIdentify Unable to identify image colorspace. Exited with code: {0}", exitCode);
}
catch (Exception ex)
{
m_Logger.Warn(string.Format("Error getting colorspace for {0}. Error: {1}", imagePath, ex.Message), ex);
}
return("RGB");
}
private Size GetDotsPerInch(string imagePath)
{
try
{
string imageMagickIdentifyPath = Settings.GetValue("ImageMagickIdentify");
int exitCode;
string args = string.Format("-format \"%[fx:resolution.x]x%[fx:resolution.y]\" \"{0}\"", imagePath);
string output = CommandLineExecuter.Execute(imageMagickIdentifyPath, args, out exitCode).Trim();
const string pattern = @"(?<X>\d.+)x(?<Y>\d.+)$";
Match match = Regex.Match(output, pattern);
if (match.Success)
{
int x = Convert.ToInt32(match.Groups["X"].Value);
int y = Convert.ToInt32(match.Groups["Y"].Value);
m_Logger.DebugFormat("Got DPI from file: {0}. X:{1}, Y:{2}", imagePath, x, y);
return(new Size(x, y));
}
m_Logger.WarnFormat("Unable to get DPI from file: {0}. Output not parsed: {1}", imagePath, output);
return(Size.Empty);
}
catch (Exception ex)
{
m_Logger.WarnFormat("Errorgetting DPI from file: {0}. Error: {1}", imagePath, ex.Message);
return(Size.Empty);
}
}
/// <summary>
/// Executes the command line and gets the response and exit code
/// </summary>
public static string Execute(string app, string args, out int exitCode)
{
CommandLineExecuter cle = new CommandLineExecuter {
ApplicationPath = app, Arguments = args
};
cle.Go();
exitCode = cle.ExitCode;
return(cle.Output);
}
private void GetVideoData()
{
int width = 0;
int height = 0;
int duration = 0;
string ffmpeg = GetSetting("FFmpegExecutablePath");
string args = string.Format("-i \"{0}\"", InputPath);
string output = CommandLineExecuter.Execute(ffmpeg, args);
Regex re = new Regex(@" (?<width>[0-9\.]{1,4})x(?<height>[0-9\.]{1,4})");
Match match = re.Match(output);
if (match.Success)
{
width = Convert.ToInt32(match.Groups["width"].Value);
height = Convert.ToInt32(match.Groups["height"].Value);
}
else
{
m_Logger.WarnFormat("Unable to get video dimensions from FFmpeg output. Output content length: {0}. Content: {1}", output.Length, output);
}
re = new Regex(@"Duration:\s(?<hours>\d+):(?<minutes>\d+):(?<seconds>\d+\.\d+)");
match = re.Match(output);
if (match.Success)
{
decimal hours = Decimal.Parse(match.Groups["hours"].Value);
decimal minutes = Decimal.Parse(match.Groups["minutes"].Value);
decimal seconds = Decimal.Parse(match.Groups["seconds"].Value);
seconds += (hours * 60 * 60);
seconds += (minutes * 60);
duration = Convert.ToInt32(Math.Round(seconds));
}
else
{
m_Logger.WarnFormat("Unable to get video duration from FFmpeg output. Output content length: {0}. Content: {1}", output.Length, output);
}
m_Height = height;
m_Width = width;
FileDataItems["Height"] = height;
FileDataItems["Width"] = width;
FileDataItems["Duration"] = duration;
m_Logger.DebugFormat("Got video metadata - height: {0}, width: {1}, duration: {2} seconds", height, width, duration);
}
private void ApplyWatermark(string imagePath, string watermarkImagePath)
{
int exitCode;
string imageMagickCompositePath = Settings.GetValue("ImageMagickComposite");
string args = "-dissolve 30 -gravity center \"" + watermarkImagePath + "\" \"" + imagePath + "\" \"" + imagePath + "\"";
CommandLineExecuter.Execute(imageMagickCompositePath, args, out exitCode);
if (exitCode != 0)
{
throw new SystemException("Error stamping image. ImageMagickComposite exited with code: " + exitCode);
}
}
public override string GeneratePreview()
{
string extension = (Path.GetExtension(InputPath) ?? string.Empty).ToLower();
// Get temp path where FLV should be stored
string outputPath = GetTempFilename(GetExtensionGenerated(extension));
// Get settings
string ffmpeg = GetSetting("FFmpegExecutablePath");
string args = GetSetting("FFmpegPreviewArgs");
// Replace keywords
args = args.Replace("[INPUT]", InputPath.WrapInQuotes());
args = args.Replace("[OUTPUT]", outputPath.WrapInQuotes());
args = args.Replace("[WIDTH]", PreviewSize.Width.ToString());
args = args.Replace("[HEIGHT]", PreviewSize.Height.ToString());
// Apply watermark
if (!String.IsNullOrEmpty(WatermarkPath) && File.Exists(WatermarkPath))
{
string watermarkArgs = GetSetting("FFmpegWatermarkArgs");
if (String.IsNullOrEmpty(watermarkArgs))
{
m_Logger.WarnFormat("Unable to apply watermark; no command arguments specified");
}
else
{
watermarkArgs = watermarkArgs.Replace("[WATERMARK]", WatermarkPath.WrapInQuotes());
args = args.Replace("[WATERMARK-ARGS]", watermarkArgs);
}
}
// Remove watermark args placeholder, in case no watermark was requested or file not found
args = args.Replace("[WATERMARK-ARGS]", string.Empty);
// Execute FFmpeg command line
CommandLineExecuter.Execute(ffmpeg, args);
// Update FLV metadata (fixes duration & seek problems)
string flvtool = GetSetting("FLVToolExecutablePath");
string flvtoolargs = string.Format("-U {0}", outputPath);
CommandLineExecuter.Execute(flvtool, flvtoolargs);
return(outputPath);
}
private string ExecuteCommandLine(string setting, Size size)
{
// Get command line app settings
string commandLineApp = GetSetting(setting + "CommandLine_App");
string commandLineArgs = GetSetting(setting + "CommandLine_Args");
string extension = GetSetting(setting + "_Extension");
// Get input and output paths
string inputPath = InputPath;
string outputPath = GetTempFilename(extension);
// Replace command line arg placeholders with actual values
commandLineArgs = commandLineArgs.Replace("[INPUT]", inputPath.WrapInQuotes());
commandLineArgs = commandLineArgs.Replace("[OUTPUT]", outputPath.WrapInQuotes());
commandLineArgs = commandLineArgs.Replace("[WIDTH]", size.Width.ToString());
commandLineArgs = commandLineArgs.Replace("[HEIGHT]", size.Height.ToString());
// Execute command line
CommandLineExecuter.Execute(commandLineApp, commandLineArgs);
return(outputPath);
}
