Enum H264Preset 

pub enum H264Preset {
    Ultrafast,
    Superfast,
    Veryfast,
    Faster,
    Fast,
    Medium,
    Slow,
    Slower,
    Veryslow,
    Placebo,
}

libx264 encoding speed/quality preset.

Slower presets produce higher quality at the same bitrate but take longer to encode. Not supported by hardware encoders (NVENC, QSV, etc.) — the option is skipped with a warning when the encoder does not recognise it.

Variants

Ultrafast

Fastest encoding, lowest quality.

Superfast

Very fast encoding.

Veryfast

Fast encoding.

Faster

Faster than default.

Fast

Slightly faster than default.

Medium

Default preset — balanced speed and quality.

Slow

Slower encoding, better quality.

Slower

Noticeably slower, noticeably better quality.

Veryslow

Very slow, near-optimal quality.

Placebo

Slowest, maximum compression (not recommended for production).

Trait Implementations

impl Clone for H264Preset

fn clone(&self) -> H264Preset

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for H264Preset

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

Formats the value using the given formatter.

impl PartialEq for H264Preset

fn eq(&self, other: &H264Preset) -> 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 Copy for H264Preset

impl Eq for H264Preset

impl StructuralPartialEq for H264Preset