private async Task SetComp(StorageFile backgroundAudio, Dictionary <StorageFile, TimeSpan> imageFiles, CancellationToken cancellationToken)
{
StorageFile temporaryFile = await CreateFile("Media Composition", "temp (1)", "cmp", cancellationToken);
BackgroundAudioTrack backgroundAudioTrack = await BackgroundAudioTrack.CreateFromFileAsync(backgroundAudio);
AudioEncodingProperties audioEncodingProperties = backgroundAudioTrack.GetAudioEncodingProperties();
TimeSpan duration = backgroundAudioTrack.OriginalDuration;
MediaComposition composition = new MediaComposition();
composition.BackgroundAudioTracks.Add(backgroundAudioTrack);
CancelTask(cancellationToken);
MediaClip clip;
foreach (var item in imageFiles)
{
CancelTask(cancellationToken);
clip = await MediaClip.CreateFromImageFileAsync(item.Key, item.Value);
composition.Clips.Add(clip);
}
composition.CreateDefaultEncodingProfile();
await composition.SaveAsync(temporaryFile);
ReportProgress(Stage5, Stage4ProgressBar, TextProgress4, 100);
CancelTask(cancellationToken);
}
