| private AddVideoEffect ( [ activatableClassId ) : void | ||
| activatableClassId | [ | |
| return | void | |
async Task CS_WP_MT_Basic(EffectType effectType)
{
StorageFile source = await StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appx:///Input/Car.mp4"));
StorageFile destination = await KnownFolders.VideosLibrary.CreateFileAsync("CS_WP_MT_Basic" + effectType + ".mp4", CreationCollisionOption.ReplaceExisting);
var definition = await Utils.CreateEffectDefinitionAsync(effectType);
var transcoder = new MediaTranscoder();
transcoder.AddVideoEffect(definition.ActivatableClassId, true, definition.Properties);
PrepareTranscodeResult transcode = await transcoder.PrepareFileTranscodeAsync(source, destination, MediaEncodingProfile.CreateMp4(VideoEncodingQuality.Qvga));
await transcode.TranscodeAsync();
}
private async void Transcode_Click(object sender, RoutedEventArgs e)
{
StartMediaTranscoder.IsEnabled = false;
StorageFile source = await StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appx:///Assets/Car.mp4"));
StorageFile destination = await KnownFolders.VideosLibrary.CreateFileAsync("VideoEffectsTestApp.MediaTranscoder.mp4", CreationCollisionOption.ReplaceExisting);
var encodingProfile = await MediaEncodingProfile.CreateFromFileAsync(source);
var definition = await CreateEffectDefinitionAsync(encodingProfile.Video);
var transcoder = new MediaTranscoder();
transcoder.AddVideoEffect(definition.ActivatableClassId, true, definition.Properties);
PrepareTranscodeResult transcode = await transcoder.PrepareFileTranscodeAsync(source, destination, MediaEncodingProfile.CreateMp4(VideoEncodingQuality.Qvga));
await transcode.TranscodeAsync();
StartMediaTranscoder.IsEnabled = true;
}
public async Task CS_WP_MT_LumiaCropSquare()
{
StorageFile source = await StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appx:///Input/Car.mp4"));
StorageFile destination = await KnownFolders.VideosLibrary.CreateFileAsync("CS_W_MT_CropSquare.mp4", CreationCollisionOption.ReplaceExisting);
// Select the largest centered square area in the input video
var encodingProfile = await MediaEncodingProfile.CreateFromFileAsync(source);
uint inputWidth = encodingProfile.Video.Width;
uint inputHeight = encodingProfile.Video.Height;
uint outputLength = Math.Min(inputWidth, inputHeight);
Rect cropArea = new Rect(
(float)((inputWidth - outputLength) / 2),
(float)((inputHeight - outputLength) / 2),
(float)outputLength,
(float)outputLength
);
encodingProfile.Video.Width = outputLength;
encodingProfile.Video.Height = outputLength;
var definition = new LumiaEffectDefinition(new FilterChainFactory(() =>
{
var filters = new List<IFilter>();
filters.Add(new CropFilter(cropArea));
return filters;
}));
definition.InputWidth = inputWidth;
definition.InputHeight = inputHeight;
definition.OutputWidth = outputLength;
definition.OutputHeight = outputLength;
var transcoder = new MediaTranscoder();
transcoder.AddVideoEffect(definition.ActivatableClassId, true, definition.Properties);
PrepareTranscodeResult transcode = await transcoder.PrepareFileTranscodeAsync(source, destination, encodingProfile);
await transcode.TranscodeAsync();
}
/// <summary>
/// Invoked when this page is about to be displayed in a Frame.
/// </summary>
/// <param name="e">Event data that describes how this page was reached.
/// This parameter is typically used to configure the page.</param>
protected override async void OnNavigatedTo(NavigationEventArgs e)
{
StorageFile source = await StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appx:///Input/Car.mp4"));
// Select the largest centered square area in the input video
var inputProfile = await MediaEncodingProfile.CreateFromFileAsync(source);
uint inputWidth = inputProfile.Video.Width;
uint inputHeight = inputProfile.Video.Height;
uint outputLength = Math.Min(inputWidth, inputHeight);
Rect cropArea = new Rect(
(float)((inputWidth - outputLength) / 2),
(float)((inputHeight - outputLength) / 2),
(float)outputLength,
(float)outputLength
);
// Create the output encoding profile
var outputProfile = MediaEncodingProfile.CreateMp4(VideoEncodingQuality.HD720p);
outputProfile.Video.Bitrate = inputProfile.Video.Bitrate;
outputProfile.Video.FrameRate.Numerator = inputProfile.Video.FrameRate.Numerator;
outputProfile.Video.FrameRate.Denominator = inputProfile.Video.FrameRate.Denominator;
outputProfile.Video.Width = outputLength;
outputProfile.Video.Height = outputLength;
var definition = new LumiaEffectDefinition(new FilterChainFactory(() =>
{
var filters = new List<IFilter>();
filters.Add(new CropFilter(cropArea));
return filters;
}));
definition.InputWidth = inputWidth;
definition.InputHeight = inputHeight;
definition.OutputWidth = outputLength;
definition.OutputHeight = outputLength;
var clip = await MediaClip.CreateFromFileAsync(source);
clip.VideoEffectDefinitions.Add(definition);
var composition = new MediaComposition();
composition.Clips.Add(clip);
TextLog.Text = "Encoding using MediaComposition";
StorageFile destination1 = await KnownFolders.VideosLibrary.CreateFileAsync("Square_MC.mp4", CreationCollisionOption.ReplaceExisting);
await composition.RenderToFileAsync(destination1, MediaTrimmingPreference.Fast, outputProfile);
TextLog.Text = "Encoding using MediaTranscoder";
StorageFile destination2 = await KnownFolders.VideosLibrary.CreateFileAsync("Square_MT.mp4", CreationCollisionOption.ReplaceExisting);
var transcoder = new MediaTranscoder();
transcoder.AddVideoEffect(definition.ActivatableClassId, true, definition.Properties);
var transcode = await transcoder.PrepareFileTranscodeAsync(source, destination2, outputProfile);
await transcode.TranscodeAsync();
TextLog.Text = "Starting MediaComposition preview";
PreviewMC.SetMediaStreamSource(
composition.GeneratePreviewMediaStreamSource((int)outputLength, (int)outputLength)
);
TextLog.Text = "Starting MediaElement preview";
PreviewME.AddVideoEffect(definition.ActivatableClassId, false, definition.Properties);
PreviewME.Source = new Uri("ms-appx:///Input/Car.mp4");
PreviewME.Play();
TextLog.Text = "Done";
}
