Class EFLVOutputBlock

Namespace

VisioForge.Core.MediaBlocks.Outputs

Assembly

VisioForge.Core.dll

Enhanced FLV (Flash Video) multimedia container output block for creating multi-track FLV files with Enhanced RTMP (V2) support. Provides comprehensive Enhanced FLV file creation with support for multiple video encoders (H.264, H.265) and audio encoders (AAC, MP3) for advanced streaming content preparation with FOURCC format signaling and multi-track capabilities. Implements the VisioForge.Core.MediaBlocks.MediaBlock. Implements the VisioForge.Core.MediaBlocks.IMediaBlockInternals. Implements the IDisposable.

public class EFLVOutputBlock : MediaBlock, IMediaBlock, IDisposable, IMediaBlockInternals, IMediaBlockDynamicInputs

Inheritance

object

MediaBlock

EFLVOutputBlock

Implements

IMediaBlock

IDisposable

IMediaBlockInternals

IMediaBlockDynamicInputs

Inherited Members

MediaBlock._isBuilt

MediaBlock._pipeline

MediaBlock._pipelineCtx

MediaBlock.GetPipelineContext()

MediaBlock.SetPipelineContext(BlockPipelineContext)

MediaBlock.SetPipeline(MediaBlocksPipeline)

MediaBlock.Context

MediaBlock.Name

MediaBlock.IsBuilt

MediaBlock.Owner

MediaBlock.Type

MediaBlock.ID

MediaBlock.Input

MediaBlock.Inputs

MediaBlock.Output

MediaBlock.Outputs

MediaBlock.HasInputs

MediaBlock.HasOutputs

MediaBlock.Build()

MediaBlock.CreateElements()

MediaBlock.AddElementsToPipeline()

MediaBlock.RemoveElementsFromPipeline()

MediaBlock.DeepCopy(string)

MediaBlock.Reset()

MediaBlock.ToYAMLBlock()

MediaBlock.ClearPads()

MediaBlock.Dispose(bool)

MediaBlock.Dispose()

object.Equals(object?)

object.Equals(object?, object?)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object?, object?)

object.ToString()

Extension Methods

MediaBlockExtensions.GetInputPadByType(IMediaBlock, MediaBlockPadMediaType)

MediaBlockExtensions.GetOutputPadByType(IMediaBlock, MediaBlockPadMediaType)

MediaBlockHelper.SendEndOfStream(MediaBlock)

MediaBlockHelper.SendEvent(MediaBlock, Event)

MediaBlockHelper.SetState(MediaBlock, State)

Constructors

EFLVOutputBlock(EFLVSinkSettings, IVideoEncoder, IAudioEncoder)

Initializes a new instance of the VisioForge.Core.MediaBlocks.Outputs.EFLVOutputBlock class with custom video and audio encoder settings. Provides full control over video and audio compression parameters for professional Enhanced FLV file creation.

public EFLVOutputBlock(EFLVSinkSettings sinkSettings, IVideoEncoder videoSettings, IAudioEncoder audioSettings)

Parameters

sinkSettings EFLVSinkSettings

The Enhanced FLV container sink settings defining output file configuration.

videoSettings IVideoEncoder

The video encoder settings controlling video compression quality and parameters.

audioSettings IAudioEncoder

The audio encoder settings controlling audio compression quality and parameters.

Properties

Input

Gets the primary input pad (first in the collection of dynamic inputs).

public override MediaBlockPad Input { get; }

Property Value

MediaBlockPad

Inputs

Gets all input pads available on this block (dynamic collection for video and audio).

public override MediaBlockPad[] Inputs { get; }

Property Value

MediaBlockPad[]

Output

Gets the primary output pad (none for output blocks that write to files).

public override MediaBlockPad Output { get; }

Property Value

MediaBlockPad

Outputs

Gets all output pads available on this block (none for output blocks).

public override MediaBlockPad[] Outputs { get; }

Property Value

MediaBlockPad[]

Type

Gets the media block type identifier for Enhanced FLV output operations.

public override MediaBlockType Type { get; }

Property Value

MediaBlockType

Methods

Build()

Builds and initializes the Enhanced FLV output block within the pipeline context. Creates the Enhanced FLV sink, video and audio encoders, and establishes all necessary connections for encoding and writing multimedia content to the Enhanced FLV file. Each input pad gets its own encoder instance to support multi-track configurations.

public override bool Build()

Returns

bool

true if the Enhanced FLV output block was successfully built and configured; otherwise, false.

CleanUp()

Cleans up all resources associated with the Enhanced FLV output operations, including encoders, sink, and file handles.

public void CleanUp()

CreateNewInput(MediaBlockPadMediaType)

Creates a new input pad for the specified media type, enabling dynamic addition of video and audio streams.

public MediaBlockPad CreateNewInput(MediaBlockPadMediaType mediaType)

Parameters

mediaType MediaBlockPadMediaType

The type of media (Video, Audio, or Subtitle) for the new input pad.

Returns

MediaBlockPad

A new MediaBlockPad configured for the specified media type.

Dispose(bool)

Releases unmanaged and managed resources used by the Enhanced FLV output block. Properly disposes of GStreamer elements, encoders, and file writing 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 GStreamer element wrapper for advanced configuration and monitoring.

public BaseElement GetCore()

Returns

BaseElement

Always null for composite output blocks with multiple internal elements.

GetElement()

Gets the native GStreamer element for direct GStreamer pipeline integration.

public Element GetElement()

Returns

Element

Always null for composite output blocks with multiple internal elements.

GetFilenameOrURL()

Gets the current output filename or URL where the Enhanced FLV content is being written.

public string GetFilenameOrURL()

Returns

string

The file path or URL string for the Enhanced FLV output destination.

GetInput(MediaBlockPadMediaType)

Retrieves an existing input pad for the specified media type from the current collection.

public MediaBlockPad GetInput(MediaBlockPadMediaType mediaType)

Parameters

mediaType MediaBlockPadMediaType

The type of media (Video, Audio, or Subtitle) to search for.

Returns

MediaBlockPad

The first matching MediaBlockPad for the specified media type, or null if not found.

IsAvailable(IH264EncoderSettings, IAACEncoderSettings)

Determines whether Enhanced FLV output functionality is available on the current system with the specified encoder settings. Requires GStreamer eflvmux element and the specified video and audio encoder plugins to be installed and functional.

public static bool IsAvailable(IH264EncoderSettings h264settings, IAACEncoderSettings aacSettings)

Parameters

h264settings IH264EncoderSettings

The H.264 video encoder settings to validate for availability.

aacSettings IAACEncoderSettings

The AAC audio encoder settings to validate for availability.

Returns

bool

true if Enhanced FLV output with the specified encoders is supported; otherwise, false.

SetFilenameOrURL(string)

Updates the output filename or URL for the Enhanced FLV file destination, allowing dynamic output redirection.

public void SetFilenameOrURL(string value)

Parameters

value string

The new file path or URL where Enhanced FLV content should be written.

IMediaBlockInternals.SetContext(MediaBlocksPipeline)

Sets the pipeline context for this Enhanced FLV output block, providing access to the parent pipeline and logging context.

void IMediaBlockInternals.SetContext(MediaBlocksPipeline pipeline)

Parameters

pipeline MediaBlocksPipeline

The parent MediaBlocks pipeline containing this Enhanced FLV output block.

See Also

MediaBlock

IMediaBlockInternals

IDisposable