A system designed to reduce the work needed to generate sane, efficient commandlines that do what you want. For information on what options these settings toggle, check the output of
Default: not set
Limit the profile of the output stream. If you specify a profile, it overrides all other settings, so if you use it, you will be guaranteed a compatible stream. If you set this option, you cannot use lossless encoding (
--qp 0 or
You should set this if you know your playback device only supports a certain profile. Most decoders support High profile, so there's no need to set this.
baseline, main, high.
Change options to trade off compression efficiency against encoding speed. If you specify a preset, the changes it makes will be applied before all other parameters are applied.
You should generally set this option to the slowest you can bear.
ultrafast, superfast, veryfast, faster, fast, medium, slow, slower, veryslow, placebo.