You can crop your video in Microsoft Expression Encoder, and then specify whether the cropped sections will be replaced by black bars, or whether the remaining content will be stretched to fill the frame dimensions.
To crop video
In the Media Content panel, select the video that you want to crop.
If the Enhance panel is not visible, in the Window menu, click Enhance. If necessary, click the Enhance tab to display the panel.
In the Enhance panel, under the Pre-Processing category, select Crop.
If you want to retain the original aspect ratio of the footage as you crop it, make sure that the lock icon is closed. If it is not, click it to close it.
To change the crop dimensions, do one of the following:
In the Preview panel, drag the corner points.
In the Crop section, drag the Top, Left, Width, and Height values. Drag up or right to increase the values, or drag left or down to decrease the values. Alternatively, you can click the values in each box and type new values.
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