Struct WebpEncodeSettings 

pub struct WebpEncodeSettings {
    pub quality: u8,
    pub max_fps: u32,
    pub max_width: Option<u32>,
    pub lossless: bool,
    pub compression_level: u8,
}

Encoder settings for the animated WebP cover derived from a clip’s MP4 preview.

The Default is visually transparent lossy: quality 95 at effort (compression_level) 4. Measurement on real Suno covers showed 95 reaches ~46 dB (indistinguishable from lossless for a cover) at roughly a fifth of the lossless size, and that effort 6 only matches effort 4’s size for 7-13x the encode time, so effort is capped at 4. Lossless is opt-in and much larger (a 5 s cover is ~145 MB versus ~31 MB at quality 95).

Fields

quality: u8

Lossy encoder quality, 0-100 (higher is better and larger). Ignored when lossless is set.

max_fps: u32

Cap on the output frame rate; a faster source is downsampled to this.

max_width: Option<u32>

Optional cap on the output width in pixels: Some(w) scales a wider source down keeping its aspect ratio (never upscaling), while None keeps the source resolution.

lossless: bool

Encode losslessly. Off by default: lossless animated WebP of real video is intrinsically huge (roughly 30x the lossy source) with no visible gain over quality 95 for a cover.

compression_level: u8

Encoder effort, 0-4 (higher is smaller and slower). Capped at 4 because effort 6 yields the same size for many times the encode time.

Trait Implementations

impl Clone for WebpEncodeSettings

fn clone(&self) -> WebpEncodeSettings

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for WebpEncodeSettings

impl Debug for WebpEncodeSettings

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

Formats the value using the given formatter.

impl Default for WebpEncodeSettings

fn default() -> Self

Returns the “default value” for a type.

impl Eq for WebpEncodeSettings

impl PartialEq for WebpEncodeSettings

fn eq(&self, other: &WebpEncodeSettings) -> 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 StructuralPartialEq for WebpEncodeSettings