H.265/HEVC Video Encoding.

The libx265 encoder offers around 25–50% bitrate savings compared to H.264 video encoded with libx264, while retaining the same visual quality.

• These gains will be most pronounced at resolutions of 1080p and higher.

1-pass target bitrate

Constant Rate Factor (CRF)

Encode video as x265 HEVC 10bit

Two-Pass Encoding

https://trac.ffmpeg.org/wiki/Encode/H.265

https://x265.readthedocs.io/en/stable/