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HwAccel

re_mp4_reader

Enum HwAccel 

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pub enum HwAccel {
    Off,
    Auto,
}
Expand description

Hardware-acceleration preference for transcoding.

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Off

Always use a software encoder.

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Auto

Use a hardware encoder if the local ffmpeg provides one for the target codec, otherwise fall back to a software encoder.

Hardware encoders are drawn from the NVENC and VideoToolbox families only; QSV/VAAPI are not yet used. In practice that means GPU encoding is available for H.264/H.265, and for AV1 on newer NVIDIA hardware. VP8/VP9 always fall back to software — their only GPU encoders are Intel QSV/VAAPI (vp8_vaapi/vp9_vaapi/vp9_qsv), which are out of scope; NVENC and VideoToolbox have no VP8/VP9 encoder at all.

Selection is by encoder presence only. An encoder that is listed but non-functional at runtime (e.g. h264_nvenc on a machine with no NVIDIA GPU or driver) is not detected here.

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impl Clone for HwAccel

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fn clone(&self) -> HwAccel

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for HwAccel

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impl Debug for HwAccel

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

Formats the value using the given formatter. Read more
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impl Default for HwAccel

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fn default() -> HwAccel

Returns the “default value” for a type. Read more
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impl Eq for HwAccel

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impl PartialEq for HwAccel

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl StructuralPartialEq for HwAccel

Auto Trait Implementations§

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impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Az for T

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fn az<Dst>(self) -> Dst
where T: Cast<Dst>,

Casts the value.
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<Src, Dst> CastFrom<Src> for Dst
where Src: Cast<Dst>,

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fn cast_from(src: Src) -> Dst

Casts the value.
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impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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impl<T> CheckedAs for T

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fn checked_as<Dst>(self) -> Option<Dst>
where T: CheckedCast<Dst>,

Casts the value.
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impl<Src, Dst> CheckedCastFrom<Src> for Dst
where Src: CheckedCast<Dst>,

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fn checked_cast_from(src: Src) -> Option<Dst>

Casts the value.
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<Q, K> Equivalent<K> for Q
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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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where Dst: LosslessTryFrom<Src>,

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Performs the conversion.
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Performs the conversion.
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where T: OverflowingCast<Dst>,

Casts the value.
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where Src: OverflowingCast<Dst>,

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Casts the value.
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

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type Output = T

Should always be Self
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where T: SaturatingCast<Dst>,

Casts the value.
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impl<Src, Dst> SaturatingCastFrom<Src> for Dst
where Src: SaturatingCast<Dst>,

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fn saturating_cast_from(src: Src) -> Dst

Casts the value.
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where T: StrictCast<Dst>,

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Casts the value.
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The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

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where T: UnwrappedCast<Dst>,

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Casts the value.
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impl<V, T> VZip<V> for T
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fn vzip(self) -> V

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where T: WrappingCast<Dst>,

Casts the value.
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Casts the value.