private static void CreateWatermark(ITrackContainer tracks, string imageName, double duration)
{
var videoTrack = tracks.AddTrack();
var clip = videoTrack.AddImage(imageName, 0, duration);
clip.AddEffect(0, duration, StandardEffects.CreateAlphaSetterRamp(0.5));
videoTrack.AddTransition(0, duration,
StandardTransitions.CreateKey(KeyTransitionType.Rgb, null, null, null, 0x00FFFFFF, null),
false);
}
/// <summary>
/// Adds the voice track
/// </summary>
/// <param name="tracks">The track container that will hold the new track</param>
/// <param name="text">The text that will be converted to speech</param>
/// <returns>The new text-to-speech track</returns>
private ITrack AddVoiceTrack(ITrackContainer tracks, string text)
{
var audioTrack = tracks.AddTrack();
var audioFileName = Path.Combine(workArea, "voice.wav");
var voice = CreateVoice();
CreateAudioFile(audioFileName, voice, text);
audioTrack.AddAudio(audioFileName);
return(audioTrack);
}
/// <summary>
/// Adds the sound files in a random order
/// </summary>
/// <param name="tracks">The track container that will hold the new track</param>
/// <param name="soundFiles">The list of sound files to add</param>
/// <param name="duration"></param>
/// <returns>The new track</returns>
private ITrack AddBackgroundMusic(ITrackContainer tracks, IList <string> soundFiles, double duration)
{
var audioTrack = tracks.AddTrack();
if (soundFiles.Any())
{
var shuffled = shuffler.Shuffle(soundFiles);
foreach (var soundFile in shuffled)
{
audioTrack.AddAudio(soundFile, 0, duration);
}
audioTrack.AddEffect(0, audioTrack.Duration, StandardEffects.CreateAudioEnvelope(0.05));
}
return(audioTrack);
}