Enum AudioCodec 

pub enum AudioCodec {
    Aac,
    Opus,
}

Which software audio encoder to open.

Variants

Aac

FFmpeg’s own native aac encoder — built in rather than an external library, so unlike AudioCodec::Opus it needs nothing added to the ffmpeg build (and no --enable-gpl, unlike crate::elements::VideoCodec::H264/ crate::elements::VideoCodec::H265). The standard choice for MP4 audio.

Opus

libopus — Opus (RFC 6716), BSD-3-Clause. A general-purpose codec covering speech and music alike, whose very short frames are why interactive systems standardized on it; WebRTC requires it, and Ogg, WebM/Matroska, and MP4 all carry it.

Unlike AudioCodec::Aac this is an external library, so a stripped ffmpeg build may not have it; that surfaces as SwAudioEncoderError::CodecNotFound. It accepts only 48/24/16/12/8 kHz — see SwAudioEncoderError::UnsupportedSampleRate.

Trait Implementations

impl Clone for AudioCodec

fn clone(&self) -> AudioCodec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for AudioCodec

impl Debug for AudioCodec

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

Formats the value using the given formatter.

impl Eq for AudioCodec

impl PartialEq for AudioCodec

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for AudioCodec