It produced an MPEG2 stream that was obviously too large (the encoder cannot resize) but looked OK. So it's an interlaced-to-interlaced conversion.įirst off, I did a straight MPEG2 encoding, no resizing:ĭirectShowSource("E:\video\birthday\STREAM\00000.MTS") The destination is DVD, so it's 480i (interlaced), 29.97 frames / sec. The source is 1080i (interlaced, top field first), 29.97 frames / sec. I use HCenc as the MPEG2 encoder, because it offers excellent quality. You can provide a hex value or use a supported color name.I have an AVCHD file (.m2ts) that I want to convert to DVD. If you are inputting a series of images, and the images vary in size, add the eval=frame option in the scale filter, such as: ffmpeg -i input -vf "scale=1280:720:force_original_aspect_ratio=decrease:eval=frame,pad=1280:720:-1:-1:color=black" output Using input images that each vary in size Using the crop filter to cut off the excess: ffmpeg -i input -vf "scale=1280:720:force_original_aspect_ratio=increase,crop=1280:720" output 4:3 input aspect ratio, 16:9 output aspect ratio. Same as above but without upscalingĦ40×480 (4:3) input into 1280×720 (16:9) output without upscaling.
For example, an input with a 2.35:1 aspect ratio fit into a 16:9 output will result in letterboxing.
Letterboxing will occur instead of pillarboxing if the input aspect ratio is wider than the output aspect ratio. If you want to avoid upscaling see the example below. Use the crop filter to cut off the excess.Add black bars (or any other color) with pad filter to pillarbox or letterbox the image to fit properly, or.
In these examples the original image will be scaled to fit into a 1280×720, 16:9 aspect ratio output while preserving the original aspect ratio.
Represents a 640×480, 4:3 aspect ratio video.
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