Determines which video codec to use for encoding.
Sets the language that displays when playing the player.
Limit the profile of the output stream.
Sets the level flag in the output bitstream.
Sets parameters to preselected values, trading off compression efficiency against encoding speed. These parameters are applied before all other input parameters are applied, and so you can override any parameters that these values control..
Specifies the output video rate.
Minimum GOP length, the minimum distance between I-frames.
This determines the maximum distance between I-frames
Very high GOP lengths will result in slightly more efficient compression, but will make seeking in the video somewhat more difficult
Specify output colorspace format.
Enables parallel encoding by using more than 1 thread to increase speed on multi-core systems
Enable Ultra HD Blu-ray format support. If specified with incompatible encoding options, the encoder will attempt to modify/set the right encode specifications. If the encoder is unable to do so, this option will be turned OFF. Highly experimental.
Allow libx265 to generate a bitstream with profile and level NONE. By default it will abort any encode which does not meet strict level compliance.