VideoCapture class
- Inheritance
- Available extensions
Constructors
- VideoCapture.create(String filename, {int apiPreference = CAP_ANY})
-
Opens a video file or a capturing device or an IP video stream for video capturing with API Preference.
factory
- VideoCapture.empty()
-
factory
- VideoCapture.fromDevice(int device, {int apiPreference = CAP_ANY})
-
factory
- VideoCapture.fromFile(String filename, {int apiPreference = CAP_ANY})
-
factory
- VideoCapture.fromPointer(VideoCapturePtr ptr)
-
factory
Properties
- codec → String
-
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
- isDisposed → bool
-
Whether this object has been disposed.
no setterinherited
- isOpened → bool
-
Returns true if video capturing has been initialized already.
no setter
-
props
→ List<
Object?> -
no setterinherited
-
ptr
↔ Pointer<
VideoCapture> -
getter/setter pairinherited
- ref → VideoCapture
-
no setteroverride
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
dispose(
) → void -
Releases the underlying native resources. Idempotent: calling it more
than once is safe, but the object must not be used after dispose.
inherited
-
freeNative(
) → void -
Frees the native resources owned by this object. Subclasses implement the
concrete free logic here; callers must use dispose instead.
override
-
get(
int propId) → double - Returns the specified VideoCapture property.
-
getBackendName(
) → String -
grab(
) → void - Grabs the next frame from video file or capturing device.
-
grabAsync(
) → Future< void> -
Available on VideoCapture, provided by the VideoCaptureAsync extension
Grabs the next frame from video file or capturing device. -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
open(
String uri, {int apiPreference = CAP_ANY}) → bool - Opens a video file or a capturing device or an IP video stream for video capturing with API Preference and parameters.
-
openAsync(
String uri, {int apiPreference = CAP_ANY}) → Future< bool> -
Available on VideoCapture, provided by the VideoCaptureAsync extension
Opens a video file or a capturing device or an IP video stream for video capturing with API Preference and parameters. -
openIndex(
int index, {int apiPreference = CAP_ANY}) → bool - Opens a camera for video capturing with API Preference and parameters.
-
openIndexAsync(
int index, {int apiPreference = CAP_ANY}) → Future< bool> -
Available on VideoCapture, provided by the VideoCaptureAsync extension
Opens a camera for video capturing with API Preference and parameters. -
read(
{Mat? m}) → (bool, Mat) -
readAsync(
{Mat? m}) → Future< (bool, Mat)> -
Available on VideoCapture, provided by the VideoCaptureAsync extension
-
release(
) → void -
set(
int prop, double value) → void -
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Properties
- finalizer → NativeFinalizer
-
final