Enum LookaheadMode 

pub enum LookaheadMode {
    FullRes,
    Hybrid,
    HalfRes,
}

Resolution the mb-tree lookahead motion search runs at (speed/quality lever). Measured on CIF (mb-tree BD-rate vs off / encode wall vs FullRes): FullRes mand −0.19% tsrc −1.80% (1.0×) · Hybrid −0.19% / −1.47% (~1.7×) · HalfRes +0.12% / −1.28% (~4×).

Variants

FullRes

Search AND score intra/inter costs at full resolution. Best quality, slowest lookahead. The reference against which the others are measured.

Hybrid

Search the MV on 2×-downsampled planes (cheap), then REFINE + score the final intra/inter cost at FULL resolution — recovers full-res quality (the half-res loss was cost accuracy on blurred data, not the MV) at ~1.7× the speed. The no-regression speed option.

HalfRes

Default — search AND score at half resolution. Fastest lookahead (~4×), a small BD-rate cost on fine-detail content (downsampling blurs the cost estimates).

Trait Implementations

impl Clone for LookaheadMode

fn clone(&self) -> LookaheadMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for LookaheadMode

impl Debug for LookaheadMode

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

Formats the value using the given formatter.

impl Default for LookaheadMode

fn default() -> LookaheadMode

Returns the “default value” for a type.

impl Eq for LookaheadMode

impl PartialEq for LookaheadMode

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for LookaheadMode