Log Message:
Version 2.2

Encoder enhancements
--------------------
1. Enhancements to TU selection algorithm with early-outs for improved speed; \ 
use :option:`--limit-tu` to exercise.
2. New motion search method SEA (Successive Elimination Algorithm) supported now \ 
as :option: `--me` 4
3. Bit-stream optimizations to improve fields in PPS and SPS for bit-rate \ 
savings through :option:`--[no-]opt-qp-pps`, \ 
:option:`--[no-]opt-ref-list-length-pps`, and \ 
:option:`--[no-]multi-pass-opt-rps`.
4. Enabled using VBV constraints when encoding without WPP.
5. All param options dumped in SEI packet in bitstream when info selected.
6. x265 now supports POWERPC-based systems. Several key functions also have \ 
optimized ALTIVEC kernels.