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Deinterlacing filters

The deinterlacing filter converts interlaced video to progressive-scan format. The following table describes the commands available to you when you apply the deinterlacing filter to your video.

Command Description
-v_preproc 1 Preserves the size of the source video. For example, video that is 640 × 480 pixels and 30 fps is encoded at 640 × 480 pixels and 30 fps.
-v_preproc 2 The output video is half the original video size. For example, video that is 640 × 480 pixels and 30 fps is encoded at 320 × 240 pixels and 30 fps.
-v_preproc 3 The output video is half the original video size and the frame rate is doubled. For example, video that is 640 × 480 pixels and 30 fps is encoded at 320 × 240 pixels and 60 fps.
-v_preproc 4 The output video is half the original vertical size and the frame rate is doubled. For example, video that is 320 × 480 pixels and 30 fps is encoded at 320 × 240 pixels and 60 fps.

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