あるで

--interlace <false|tff|bff>, --no-interlace

0.progressive pictures (default)
1.top field first
2.bottom field first

HEVC encodes interlaced content as fields. Fields must be provided to the encoder in the correct temporal order.
The source dimensions must be field dimensions and the FPS must be in units of fields per second. The decoder must re-combine the fields in their correct orientation for display.

ただしデコーダがあるかは謎