Struct FrameRate 

pub struct FrameRate { /* private fields */ }

A frame rate stored as an exact reduced fraction, e.g. 30000/1001 for 29.97 fps.

Implementations

impl FrameRate

pub fn new(num: u32, den: u32) -> Result<Self>

pub fn num(self) -> u32

pub fn den(self) -> u32

pub fn as_f64(self) -> f64

pub fn frame_duration(self) -> f64

Duration of one frame in seconds.

pub fn frame_time(self, frame: i64) -> f64

Presentation time of frame in seconds.

pub fn nominal(self) -> u32

The integer rate used for timecode counting (30 for 29.97).

pub fn is_drop_frame(self) -> bool

Whether SMPTE drop-frame timecode applies (29.97 and 59.94).

pub fn samples_per_frame(self, sample_rate: u32) -> f64

Audio samples per frame at sample_rate (fractional for NTSC rates).

pub fn frame_start_sample(self, frame: i64, sample_rate: u32) -> i64

Index of the first audio sample whose time is at or after the start of frame.

pub fn frames_in(self, seconds: f64) -> u64

Number of whole frames needed to cover seconds (at least one).

pub fn label(self) -> String

Short human label, e.g. 29.97 or 30.

Trait Implementations

impl Clone for FrameRate

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FrameRate

impl Debug for FrameRate

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

Formats the value using the given formatter.

impl Display for FrameRate

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

Formats the value using the given formatter.

impl Eq for FrameRate

impl From<FrameRate> for Rational

Available on crate feature ffmpeg only.

fn from(rate: FrameRate) -> Self

Converts to this type from the input type.

impl FromStr for FrameRate

type Err = Error

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self>

Parses a string s to return a value of this type.

impl Hash for FrameRate

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 PartialEq for FrameRate

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for FrameRate

fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for FrameRate