Type

QuantitativeQualityOptions

Quality options expressing quantitative rate control: an explicit bitrate, an explicit quantizer, or both.

type QuantitativeQualityOptions = {
	bitrate?: number;
	bitrateMode?: 'constant' | 'variable';
	quantizer?: number;
};

Used by

• QualityOptions

Properties

bitrate

bitrate?: number;

An explicit bitrate in bits per second. When set, this bitrate is used for encoding. It also acts as the fallback in case a specified quantizer cannot be used.

bitrateMode

bitrateMode?: 'constant' | 'variable';

The bitrate mode to use when encoding resolves to bitrate-based encoding.

quantizer

quantizer?: number;

An explicit quantizer value used for quantizer-based video encoding; lower values mean higher quality. The valid range depends on the codec and is defined in the Mediabunny Codec Registry. This option is like FFmpeg's constant-rate factor (CRF).

If the quantizer cannot be used due to missing support, then it will throw, unless bitrate is defined as a fallback.