: You can choose from ten predefined presets (from ultrafast to veryslow ) that trade encoding speed for compression efficiency. The default is medium . Rate Control :
: For archiving where no data loss is acceptable, you can use the --lossless option. x265-man
The basic command-line structure for using the x265 encoder is: x265 [options] infile [-o] outfile : You can choose from ten predefined presets
: x265 --preset slow --crf 22 input.y4m -o output.hevc x265-man