Table of Contents

Class VideoRateBlock

Namespace
VisioForge.Core.MediaBlocks.VideoProcessing
Assembly
VisioForge.Core.dll

Video frame rate changer block for temporal resampling and frame rate conversion. This block intelligently adjusts video frame rates by duplicating or dropping frames while maintaining smooth playback. Features advanced temporal interpolation algorithms that minimize visual artifacts during rate conversion. Supports conversion between standard frame rates (24, 25, 30, 50, 60 fps), custom rates, and variable frame rate handling. Essential for format conversion, broadcast standards compliance, slow motion effects, time-lapse creation, and ensuring compatibility across different playback systems. Implements the VisioForge.Core.MediaBlocks.MediaBlock. Implements the VisioForge.Core.MediaBlocks.IMediaBlockInternals. Implements the IDisposable.

public class VideoRateBlock : MediaBlock, IMediaBlock, IDisposable, IMediaBlockInternals

Inheritance

Implements

Inherited Members

Extension Methods

Constructors

VideoRateBlock(VideoFrameRate)

Initializes a new instance of the VisioForge.Core.MediaBlocks.VideoProcessing.VideoRateBlock class with the specified target frame rate.

public VideoRateBlock(VideoFrameRate rate)

Parameters

rate VideoFrameRate

The target frame rate for video conversion.

Properties

Input

Gets the input.

public override MediaBlockPad Input { get; }

Property Value

MediaBlockPad

Inputs

Gets the inputs.

public override MediaBlockPad[] Inputs { get; }

Property Value

MediaBlockPad[]

Output

Gets the output.

public override MediaBlockPad Output { get; }

Property Value

MediaBlockPad

Outputs

Gets the outputs.

public override MediaBlockPad[] Outputs { get; }

Property Value

MediaBlockPad[]

Rate

Gets or sets the target frame rate for video conversion. Specifies the desired output frame rate using standard or custom values.

public VideoFrameRate Rate { get; set; }

Property Value

VideoFrameRate

Type

Gets the type.

public override MediaBlockType Type { get; }

Property Value

MediaBlockType

Methods

Build()

Constructs and initializes the video rate converter and its associated GStreamer elements. This method creates the converter with the specified frame rate, establishes input and output pads, and prepares the block for temporal resampling operations.

public override bool Build()

Returns

bool

true if the converter was successfully built and configured; false if initialization failed.

CleanUp()

Releases all resources and performs cleanup operations for this video rate block. This method disposes of the GStreamer elements and resets the build state.

public void CleanUp()

Dispose(bool)

Releases unmanaged and - optionally - managed resources.

protected override void Dispose(bool disposing)

Parameters

disposing bool

true to release both managed and unmanaged resources; false to release only unmanaged resources.

GetCore()

Gets the core BaseElement wrapper that provides additional functionality around the GStreamer video rate element.

public BaseElement GetCore()

Returns

BaseElement

The BaseElement wrapper instance that encapsulates the GStreamer video rate converter.

GetElement()

Gets the underlying GStreamer element that performs the frame rate conversion.

public Element GetElement()

Returns

Element

The GStreamer Element instance representing the video rate converter.

IsAvailable()

Determines whether this media block is available. Correct NuGet SDK redist should be included into your project.

public static bool IsAvailable()

Returns

bool

true if this media block is available; otherwise, false.

IMediaBlockInternals.SetContext(MediaBlocksPipeline)

Associates this video rate block with a pipeline and initializes its internal context. This method is called internally when the block is added to a pipeline.

void IMediaBlockInternals.SetContext(MediaBlocksPipeline pipeline)

Parameters

pipeline MediaBlocksPipeline

The MediaBlocksPipeline instance that will manage this block.

See Also