Struct Ramp 

pub struct Ramp {
    pub points: Vec<(f64, f64)>,
    pub source_duration: f64,
}

A speed ramp (ffcine.time.ramp/1): points [(u, speed)] piecewise linear over the clip’s source_duration seconds of source (u 0..1).

Fields

points: Vec<(f64, f64)>

source_duration: f64

Implementations

impl Ramp

pub fn segments(&self) -> Vec<(f64, f64, f64, f64, f64)>

render.py ramp_map: (t0, t1, s0, s1, out0) per source-time segment, output time = out0 + integral(dt / speed).

pub fn source_time(&self, t: f64) -> f64

Source seconds since the clip’s first frame shown at output second t (the inverse of Ramp::segments’ map).

pub fn setpts(&self) -> String

ffmpeg setpts expression mapping source time since the first frame to output time (render.py ramp_setpts).

pub fn setpts_of(&self, x: &str) -> String

Ramp::setpts with the source time given by the expression x.

Trait Implementations

impl Clone for Ramp

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Ramp

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

Formats the value using the given formatter.

impl PartialEq for Ramp

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Ramp

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Ramp