#[non_exhaustive]pub enum M3u8AudioDuration {
DefaultCodecDuration,
MatchVideoDuration,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against M3u8AudioDuration
, 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 m3u8audioduration = unimplemented!();
match m3u8audioduration {
M3u8AudioDuration::DefaultCodecDuration => { /* ... */ },
M3u8AudioDuration::MatchVideoDuration => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when m3u8audioduration
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant M3u8AudioDuration::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
M3u8AudioDuration::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 M3u8AudioDuration::NewFeature
is defined.
Specifically, when m3u8audioduration
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on M3u8AudioDuration::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. Specify this setting only when your output will be consumed by a downstream repackaging workflow that is sensitive to very small duration differences between video and audio. For this situation, choose Match video duration. In all other cases, keep the default value, Default codec duration. When you choose Match video duration, MediaConvert pads the output audio streams with silence or trims them to ensure that the total duration of each audio stream is at least as long as the total duration of the video stream. After padding or trimming, the audio stream duration is no more than one frame longer than the video stream. MediaConvert applies audio padding or trimming only to the end of the last segment of the output. For unsegmented outputs, MediaConvert adds padding only to the end of the file. When you keep the default value, any minor discrepancies between audio and video duration will depend on your output audio codec.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
DefaultCodecDuration
MatchVideoDuration
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§
source§impl M3u8AudioDuration
impl M3u8AudioDuration
sourcepub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
pub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
Parses the enum value while disallowing unknown variants.
Unknown variants will result in an error.
Trait Implementations§
source§impl AsRef<str> for M3u8AudioDuration
impl AsRef<str> for M3u8AudioDuration
source§impl Clone for M3u8AudioDuration
impl Clone for M3u8AudioDuration
source§fn clone(&self) -> M3u8AudioDuration
fn clone(&self) -> M3u8AudioDuration
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for M3u8AudioDuration
impl Debug for M3u8AudioDuration
source§impl Display for M3u8AudioDuration
impl Display for M3u8AudioDuration
source§impl From<&str> for M3u8AudioDuration
impl From<&str> for M3u8AudioDuration
source§impl FromStr for M3u8AudioDuration
impl FromStr for M3u8AudioDuration
source§impl Hash for M3u8AudioDuration
impl Hash for M3u8AudioDuration
source§impl Ord for M3u8AudioDuration
impl Ord for M3u8AudioDuration
source§fn cmp(&self, other: &M3u8AudioDuration) -> Ordering
fn cmp(&self, other: &M3u8AudioDuration) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq for M3u8AudioDuration
impl PartialEq for M3u8AudioDuration
source§fn eq(&self, other: &M3u8AudioDuration) -> bool
fn eq(&self, other: &M3u8AudioDuration) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for M3u8AudioDuration
impl PartialOrd for M3u8AudioDuration
source§fn partial_cmp(&self, other: &M3u8AudioDuration) -> Option<Ordering>
fn partial_cmp(&self, other: &M3u8AudioDuration) -> Option<Ordering>
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 M3u8AudioDuration
impl StructuralPartialEq for M3u8AudioDuration
Auto Trait Implementations§
impl Freeze for M3u8AudioDuration
impl RefUnwindSafe for M3u8AudioDuration
impl Send for M3u8AudioDuration
impl Sync for M3u8AudioDuration
impl Unpin for M3u8AudioDuration
impl UnwindSafe for M3u8AudioDuration
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