g  -sws_flags spline+accurate_rnd+full_chroma_int -vf "scale=in_range=full:in_color_matrix=bt709:out_range=full:out_color_matrix=bt709" -c:v libx264 -t 5 -pix_fmt yuv420p -qscale:v 1  -color_range pc -colorspace bt709 -color_primaries bt709 -color_trc unknown ./greyramp-osx/greyscale-unknown.mp4</p></td>
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