Making a movie larger than the rendered composition
Increasing the size of the output from a rendered composition reduces the image quality of a movie and is not recommended. If you must enlarge a movie, to maintain highest image quality, always enlarge a composition that was rendered at full resolution and highest quality. You can create a movie larger than the rendered composition using these methods: Note: To create a draft movie with specific dimensions, use both the Stretch option and reduced resolution in the rendered composition. Note: Do not use stretching to change the vertical dimensions of a movie with field rendering. Stretching vertically mixes the field order, which distorts any motion. Use either cropping or composition nesting if you need to vertically resize a field-rendered movie. Note: Adding an odd number of pixels to the top of a field-rendered movie reverses the field order. For example, if you add one row of pixels to the top of a movie with Upper Field First field rendering, the field-rendering order then becomes Lower Field First. Remember that if you add pixels to the top of the movie, you need to crop from the bottom row of the movie to maintain the original size. See Using interlaced video in After Effects and Field-rendering considerations. |