public static void ExtractAudio(Settings settings, String path, List <Tuple <CardInfo, String> > allEntries, InfoProgress progress)
{
foreach (var entry in allEntries)
{
progress.ProcessedSteps(1);
if (progress.Cancelled)
{
return;
}
CardInfo cardInfo = entry.Item1;
if (!cardInfo.HasAudio())
{
continue;
}
String outputAudioFilename = entry.Item2;
String outputAudioFilepath = path + Path.DirectorySeparatorChar + outputAudioFilename;
UtilsInputFiles.FileDesc audioFileDesc = cardInfo.episodeInfo.AudioFileDesc;
var audioStreamInfo = cardInfo.episodeInfo.AudioStreamInfo;
String arguments = String.Format("-v quiet -y -i \"{0}\" -map 0:{1} -ss \"{2}\" -to \"{3}\" -vn -c:a libvorbis \"{4}\"",
audioFileDesc.filename, // input file
audioStreamInfo.StreamIndex, // audio stream index
UtilsCommon.ToTimeArg(cardInfo.audioStartTimestamp), // start time
UtilsCommon.ToTimeArg(cardInfo.audioEndTimestamp), // end time
outputAudioFilepath // output file
);
UtilsCommon.StartProcessAndGetOutput(InstanceSettings.systemSettings.formatConvertCommand, arguments);
}
}
/// <summary>
/// Extracts an image from a video file at a given time and resizes it. Resizing preserves aspect ratio.
/// </summary>
public static bool GetImage(String videoFilename, double time, String outFilename, double scale = 1)
{
String argumentString = String.Format("-y -v quiet -an -ss {0} -i \"{1}\" -f image2 -vf \"scale=iw*{2}/3628800:ih*{2}/3628800\" -vframes 1 \"{3}\"",
UtilsCommon.ToTimeArg(time),
videoFilename,
(int)(scale * 3628800), // int is needed because double will create values with comma (e.g "0,1"); 3628800=10! (has many divisors)
outFilename);
UtilsCommon.StartProcessAndGetOutput(InstanceSettings.systemSettings.formatConvertCommand, argumentString);
return(true);
}
/// <summary>
/// Returns some string that identifies this card information.
/// </summary>
/// <returns>The key.</returns>
public String GetKey()
{
String str = String.Format("{0:000.}", episodeInfo.Number) + "__" + UtilsCommon.ToTimeArg(startTimestamp) + "__" + UtilsCommon.ToTimeArg(endTimestamp);
return(Regex.Replace(str, "[^a-zA-Z0-9]", "_"));
}
