コード例 #1
0
        private async void AcceptButton_Click(object sender, RoutedEventArgs e)
        {
            Pause();

            progressText.Text        = "0";
            progressText.Visibility  = Visibility.Visible;
            completedText.Visibility = Visibility.Collapsed;

            overlayGrid.Visibility = Visibility.Visible;
            OpenProcessingOverlay.Begin();

            var props   = await(_model.StorageFile as StorageFile).Properties.GetVideoPropertiesAsync();
            var profile = MediaTranscoding.CreateVideoEncodingProfileFromProps(true, props);

            if (_tempFile == null)
            {
                _tempFile = await ApplicationData.Current.TemporaryFolder.CreateFileAsync(Path.ChangeExtension(_model.StorageFile.Name, ".mp4"), CreationCollisionOption.GenerateUniqueName);
            }

            await SaveComposition();

            _renderTask           = _model.Composition.RenderToFileAsync(_tempFile, MediaTrimmingPreference.Precise, profile);
            _renderTask.Progress  = OnProgress;
            _renderTask.Completed = OnCompleted;
        }
コード例 #2
0
        private async void AcceptButton_Click(object sender, RoutedEventArgs e)
        {
            Pause();

            progressText.Text        = "0";
            progressText.Visibility  = Visibility.Visible;
            completedText.Visibility = Visibility.Collapsed;

            overlayGrid.Visibility = Visibility.Visible;
            OpenProcessingOverlay.Begin();

            Analytics.TrackEvent("VideoEditor_ExportStarted");

            await SaveComposition();

            var transcoder = new MediaTranscoder()
            {
                VideoProcessingAlgorithm = App.RoamingSettings.Read(Constants.VIDEO_PROCESSING, MediaVideoProcessingAlgorithm.Default)
            };
            var props   = await(_model.StorageFile as StorageFile).Properties.GetVideoPropertiesAsync();
            var profile = MediaTranscoding.CreateVideoEncodingProfileFromProps(props);
            var source  = _model.Composition.GenerateMediaStreamSource();

            if (_tempFile == null)
            {
                _tempFile = await ApplicationData.Current.TemporaryFolder.CreateFileAsync(Path.ChangeExtension(_model.StorageFile.Name, ".mp4"), CreationCollisionOption.GenerateUniqueName);
            }

            if (_tempStream != null)
            {
                _tempStream.Dispose();
            }

            _tempStream = await _tempFile.OpenAsync(FileAccessMode.ReadWrite);

            var result = await transcoder.PrepareMediaStreamSourceTranscodeAsync(source, _tempStream, profile);

            if (!result.CanTranscode)
            {
                await UIUtilities.ShowErrorDialogAsync("Unable to Transcode!", $"Returned {result.FailureReason}");

                return;
            }

            _renderTask            = result.TranscodeAsync();
            _renderTask.Progress   = OnProgress;
            _renderTask.Completed += OnCompleted;
        }