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Conversion is the process of changing one format is to another. Usually this means a software conversion like from MOV to MP4, but can also be a hardware conversion like from HDMI to composite with separated chroma and luminance by cable.

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I have some 4K 3840x2160 footage in MP4 format that I need to bring down to 1080p. I tried running ffmpeg -i orig.mp4 -vf scale=1920:1080 smaller.mp4 but the result is very poor quality, with th …
asked Feb 19 '15 by lara michaels