Enum RateControl 

pub enum RateControl {
    ConstantBitRate(u32),
    VariableBitRate(u32),
    ConstrainedQuality {
        bitrate: u32,
        max_quality: u32,
    },
    ConstantQuality(u32),
    Lossless,
}

Configures the type of rate control the codec should employ.

Variants

ConstantBitRate(u32)

Constant Bit Rate (CBR) mode, bitrate in kbit/s.

VariableBitRate(u32)

Variable Bit Rate (VBR) mode, bitrate in kbit/s.

ConstrainedQuality

Constrained Quality (CQ) mode. This is variable bitrate mode, but an additional quality cap, so as not to waste bits on scenes where additional bitrate would be wasted. Use the following control sets to obtain fine-grained over the bounds of the variable bitrate algorithm (or just let the codec decide):

• ctrl::EncoderControlSet::MaxIntraBitratePct

In addition, for VP9 the following extra sets are available:

• ctrl::EncoderControlSet::Vp9MaxInterBitratePct
• ctrl::EncoderControlSet::Vp9AQMode
• ctrl::EncoderControlSet::Vp9FramePeriodicBoost

Fields

bitrate: u32

Target bitrate in kbit/s.

max_quality: u32

Minimum quality setting the encoder should use. Allowable values 0..63 (lower value = higher quality).

ConstantQuality(u32)

Constant Quality/Quantizer (Q) mode. Allowable values 0..63 (lower value = higher quality).

Lossless

Lossless quality mode. The decoded bitstream will be an exact bit-accurate copy of the input. Only supported by the VP9 codec.

Trait Implementations

impl Clone for RateControl

fn clone(&self) -> RateControl

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RateControl

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for RateControl

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for RateControl

fn cmp(&self, other: &RateControl) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for RateControl

fn eq(&self, other: &RateControl) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for RateControl

fn partial_cmp(&self, other: &RateControl) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for RateControl

impl Eq for RateControl

impl StructuralPartialEq for RateControl