Enum aws_sdk_mediaconvert::types::PadVideo
source · #[non_exhaustive]pub enum PadVideo {
Black,
Disabled,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against PadVideo
, it is important to ensure
your code is forward-compatible. That is, if a match arm handles a case for a
feature that is supported by the service but has not been represented as an enum
variant in a current version of SDK, your code should continue to work when you
upgrade SDK to a future version in which the enum does include a variant for that
feature.
Here is an example of how you can make a match expression forward-compatible:
# let padvideo = unimplemented!();
match padvideo {
PadVideo::Black => { /* ... */ },
PadVideo::Disabled => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when padvideo
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant PadVideo::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
PadVideo::Unknown(UnknownVariantValue("NewFeature".to_owned()))
and calling as_str
on it yields "NewFeature"
.
This match expression is forward-compatible when executed with a newer
version of SDK where the variant PadVideo::NewFeature
is defined.
Specifically, when padvideo
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on PadVideo::NewFeature
also yielding "NewFeature"
.
Explicitly matching on the Unknown
variant should
be avoided for two reasons:
- The inner data
UnknownVariantValue
is opaque, and no further information can be extracted. - It might inadvertently shadow other intended match arms. Use this setting if your input has video and audio durations that don’t align, and your output or player has strict alignment requirements. Examples: Input audio track has a delayed start. Input video track ends before audio ends. When you set Pad video to Black, MediaConvert generates black video frames so that output video and audio durations match. Black video frames are added at the beginning or end, depending on your input. To keep the default behavior and not generate black video, set Pad video to Disabled or leave blank.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Black
Disabled
Unknown(UnknownVariantValue)
Unknown
. See the docs on this enum for the correct way to handle unknown variants.Unknown
contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§impl Ord for PadVideo
impl Ord for PadVideo
source§impl PartialEq for PadVideo
impl PartialEq for PadVideo
source§impl PartialOrd for PadVideo
impl PartialOrd for PadVideo
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read moreimpl Eq for PadVideo
impl StructuralPartialEq for PadVideo
Auto Trait Implementations§
impl Freeze for PadVideo
impl RefUnwindSafe for PadVideo
impl Send for PadVideo
impl Sync for PadVideo
impl Unpin for PadVideo
impl UnwindSafe for PadVideo
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
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 moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
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