HD (1280x720) files to SD (720x480) DVDSP compatible file
The old Compressor 3.5.3 supposedly would convert HD files to SD compatible format. How do I do this in Compressor 4? More importantly, how do I get into a format that is compatible with DVDSP. The last time I tried a .m2v file, it was rejected - incompatible format.
Mac Pro (Early 2009), OS X Mavericks (10.9.2)