private MediaEncodingProfile SetVideoPlayer()
{
MediaEncodingProfile result;
uint width = (uint)mediaPlayerElement.ActualWidth;
uint height = (uint)mediaPlayerElement.ActualHeight;
if (width % 2 != 0)
{
width = width - 1;
}
if (height % 2 != 0)
{
height = height - 1;
}
var enc = _video.GetVideoEncodingProperties();
if (width / height == enc.Width / enc.Height)
{
result = GetMediaEncoding(new Resolutions(new SavingResolutions {
Height = height, Width = width
}, false), enc);
mediaPlayerElement.Width = width;
mediaPlayerElement.Height = height;
}
else
{
double temp = (double)enc.Width / enc.Height;
uint newHeight = (uint)(width / temp);
if (newHeight % 2 != 0)
{
newHeight = newHeight - 1;
}
result = GetMediaEncoding(new Resolutions(new SavingResolutions {
Width = width, Height = newHeight
}, false), enc);
mediaPlayerElement.Width = width;
mediaPlayerElement.Height = newHeight;
}
//mediaPlayerElement.Width = width;
//result.Video.Height = height;
//result.Video.Width = width;
return(result);
}
/**
* ソース動画ファイルのサイズにあわせて、EncodingProfileに、いい感じのサイズを設定する(HD720用）
*/
public static MediaEncodingProfile SetFeelGoodSizeToEncodingProfileForHD720(MediaClip clip, MediaEncodingProfile profile)
{
// 動画のサイズ情報取得
var prop = clip.GetVideoEncodingProperties();
double width = prop.Width, height = prop.Height;
double numerator = prop.PixelAspectRatio.Numerator, denominator = prop.PixelAspectRatio.Denominator;
// PixelAspectRatio の考慮
if ((numerator != 1 || denominator != 1) && numerator != 0 && denominator != 0)
{
width = width * numerator / denominator;
}
// - 短いほうの辺の長さが、720以下となり、かつ、
// - 長いほうの辺の長さが、1280以下となるように、縮小。（拡大はしない）
double r;
if (width > height)
{
// 横長
r = Math.Min(1280.0 / width, 720.0 / height);
}
else
{
// 縦長
r = Math.Min(720.0 / width, 1280.0 / height);
}
if (r > 1)
{
r = 1; // 拡大はしない
}
profile.Video.Width = (uint)Math.Round(width * r);
profile.Video.Height = (uint)Math.Round(height * r);
return(profile);
}
private async void SelectedVideo_Drop(object sender, DragEventArgs e)
{
if (e.DataView.Contains(StandardDataFormats.StorageItems))
{
var items = await e.DataView.GetStorageItemsAsync();
if (items.Count > 0)
{
var file = items[0] as StorageFile;
if (file.ContentType == "video/mp4" || file.ContentType == "video/x-matroska")
{
_videoFile = file;
selectedVideoFileTextBlock.Text = _videoFile.DisplayName;
_video = await MediaClip.CreateFromFileAsync(_videoFile);
SetTimeSliders(_video.OriginalDuration);
GenerateButtonEnable();
var enc = _video.GetVideoEncodingProperties();
Resolutions = new SavingResolutionsCollection(enc);
saveResolutionSelector.ItemsSource = Resolutions;
saveResolutionSelector.SelectedIndex = 0;
AllowToWatchVideoBeforeGenerating(true);
}
}
}
GenerateButtonEnable();
}
private async void addVideoButton_Click(object sender, RoutedEventArgs e)
{
StorageFile file;
IReadOnlyList <StorageFile> files;
files = await LoadFile("single", ".mp4");
if (files.Count != 0)
{
file = files[0];
if (file.ContentType == "video/mp4")
{
_videoFile = file;
selectedVideoFileTextBlock.Text = _videoFile.DisplayName;
_video = await MediaClip.CreateFromFileAsync(_videoFile);
SetTimeSliders(_video.OriginalDuration);
GenerateButtonEnable();
var enc = _video.GetVideoEncodingProperties();
Resolutions = new SavingResolutionsCollection(enc);
saveResolutionSelector.ItemsSource = Resolutions;
saveResolutionSelector.SelectedIndex = 0;
AllowToWatchVideoBeforeGenerating(true);
}
}
}
public void AddClip(MediaClip clip)
{
var aspect = clip.GetVideoEncodingProperties().PixelAspectRatio;
MediaOverlay overlay = new MediaOverlay(clip, new Windows.Foundation.Rect(20, 20, 400, 400), 1);
mediaOverlayLayer.Overlays.Add(overlay);
AddMediaClip?.Invoke(this);
}
public async Task <IFrameSource> Encode(StorageFile source)
{
MediaClip clip = await MediaClip.CreateFromFileAsync(source);
var props = clip.GetVideoEncodingProperties();
var frameMilliseconts = 1000.0f / ((float)props.FrameRate.Numerator / (float)props.FrameRate.Denominator);
var frameCount = (int)(clip.OriginalDuration.TotalMilliseconds / frameMilliseconts);
var fps = MediaHelper.MillisecondsToFPS((long)frameMilliseconts);
var frameSource = new FrameSet(fps, (int)props.Width, (int)props.Height);
TimeSpan frameDuration = TimeSpan.FromMilliseconds((int)fps);
TimeSpan frameStartTime = new TimeSpan();
MediaComposition composition = new MediaComposition();
composition.Clips.Add(clip);
for (int idx = 0; idx < frameCount; idx++)
{
var time = TimeSpan.FromMilliseconds(idx * frameMilliseconts);
var frame = await composition.GetThumbnailAsync(
time,
(int)props.Width,
(int)props.Height,
VideoFramePrecision.NearestFrame
);
using (var stream = new InMemoryRandomAccessStream())
{
await RandomAccessStream.CopyAsync(frame, stream);
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(stream);
stream.Seek(0);
SoftwareBitmap bitmap = SoftwareBitmap.Convert(
await decoder.GetSoftwareBitmapAsync(),
BitmapPixelFormat.Rgba16,
BitmapAlphaMode.Premultiplied);
frameSource.AddFrame(new Frame(bitmap)
{
Duration = frameDuration, StartTime = frameStartTime
});
frameStartTime += frameDuration;
}
}
return(frameSource);
}
// <SnippetAddOverlay>
private void AddOverlay(MediaClip overlayMediaClip, double scale, double left, double top, double opacity)
{
Windows.Media.MediaProperties.VideoEncodingProperties encodingProperties =
overlayMediaClip.GetVideoEncodingProperties();
Rect overlayPosition;
overlayPosition.Width = (double)encodingProperties.Width * scale;
overlayPosition.Height = (double)encodingProperties.Height * scale;
overlayPosition.X = left;
overlayPosition.Y = top;
MediaOverlay mediaOverlay = new MediaOverlay(overlayMediaClip);
mediaOverlay.Position = overlayPosition;
mediaOverlay.Opacity = opacity;
MediaOverlayLayer mediaOverlayLayer = new MediaOverlayLayer();
mediaOverlayLayer.Overlays.Add(mediaOverlay);
composition.OverlayLayers.Add(mediaOverlayLayer);
}
public async Task <MediaComposition> GetMediaComposition(StorageFile source)
{
MediaClip clip = await MediaClip.CreateFromFileAsync(source);
clip.VideoEffectDefinitions.Add(
new Windows.Media.Effects.VideoEffectDefinition(typeof(MForge.VideoEffects.BlurEffect).FullName)
);
var props = clip.GetVideoEncodingProperties();
var frameMilliseconts = 1000.0f / ((float)props.FrameRate.Numerator / (float)props.FrameRate.Denominator);
var frameCount = (int)(clip.OriginalDuration.TotalMilliseconds / frameMilliseconts);
var fps = MediaHelper.MillisecondsToFPS((long)frameMilliseconts);
MediaComposition composition = new MediaComposition();
MediaClip wait = MediaClip.CreateFromColor(Colors.Black, TimeSpan.FromSeconds(2));
composition.Clips.Add(wait);
composition.Clips.Add(clip);
return(composition);
}
public async Task MergeAudioVideoWebcam(StorageFile webcamFile, StorageFile videoFile, StorageFile outputFile)
{
if (webcamFile == null)
{
if (parent != null)
{
parent.StartWritingOutput("Webcam File is null", 1);
}
return;
}
if (videoFile == null)
{
if (parent != null)
{
parent.StartWritingOutput("Video File is null", 1);
}
return;
}
if (outputFile == null)
{
if (parent != null)
{
parent.StartWritingOutput("Output File is null (not specified)", 1);
}
return;
}
if (!webcamFile.IsAvailable)
{
if (parent != null)
{
parent.StartWritingOutput("Webcam File is not available", 1);
}
return;
}
if (!videoFile.IsAvailable)
{
if (parent != null)
{
parent.StartWritingOutput("Video File is not available", 1);
}
return;
}
if (parent != null)
{
parent.StartWritingOutput("Merging temporary video and webcam files..", 1);
}
try
{
MediaClip mediaClip = await MediaClip.CreateFromFileAsync(videoFile);
MediaClip webcamClip = await MediaClip.CreateFromFileAsync(webcamFile);
//the BorderVideoEffects need to be in a separate Windows Component Runtime
webcamClip.VideoEffectDefinitions.Add(new VideoEffectDefinition(typeof(BorderVideoEffect).FullName));
int xoffset = 20;
int yoffset = 30;
double overlayOpacity = 1.0;
double overlayHeight = 150;
Rect overlayRect;
VideoEncodingProperties webcamEncodingProperties = webcamClip.GetVideoEncodingProperties();
overlayRect.Height = overlayHeight;
double widthToHeightAspectRatio = ((double)webcamEncodingProperties.Width / (double)webcamEncodingProperties.Height);
overlayRect.Width = widthToHeightAspectRatio * overlayHeight;
overlayRect.X = xoffset;
overlayRect.Y = yoffset;
MediaOverlay mediaOverlay = new MediaOverlay(webcamClip);
mediaOverlay.Position = overlayRect;
mediaOverlay.Opacity = overlayOpacity;
mediaOverlay.AudioEnabled = true;
MediaOverlayLayer mediaOverlayLayer = new MediaOverlayLayer();
mediaOverlayLayer.Overlays.Add(mediaOverlay);
MediaComposition mediaComposition = new MediaComposition();
mediaComposition.Clips.Add(mediaClip);
mediaComposition.OverlayLayers.Add(mediaOverlayLayer);
if (outputFile != null)
{
var mergeOperation = mediaComposition.RenderToFileAsync(outputFile, MediaTrimmingPreference.Precise);
mergeOperation.Progress += mergeWebcamProgress;
mergeOperation.Completed += mergeWebcamCompleted;
}
}
catch (Exception e)
{
if (parent != null)
{
parent.StartWritingOutput("Merge Error :" + e.Message, 1);
}
}
}