# Parser Blocks - VisioForge Media Blocks SDK .Net

Media Blocks SDK .Net

Parser blocks are essential components in media processing pipelines. They are used to parse elementary streams, which might be raw or partially processed, to extract metadata, and to prepare the streams for further processing like decoding or multiplexing. VisioForge Media Blocks SDK .Net offers a variety of parser blocks for common video and audio codecs.

# Video Parser Blocks

# AV1 Parser Block

The AV1ParseBlock is used to parse AV1 video elementary streams. It helps in identifying frame boundaries and extracting codec-specific information.

# Block info

Name: AV1ParseBlock.

Pin direction Media type Pins count
Input video AV1 video 1
Output video AV1 video 1

# The sample pipeline 

graph LR;
    DataSourceBlock["Data Source (e.g., File or Network)"] --> AV1ParseBlock;
    AV1ParseBlock --> AV1DecoderBlock["AV1 Decoder Block"];
    AV1DecoderBlock --> VideoRendererBlock["Video Renderer Block"];

# Platforms

Windows, macOS, Linux, iOS, Android.

# H.263 Parser Block

The H263ParseBlock is designed to parse H.263 video elementary streams. This is useful for older video conferencing and mobile video applications.

# Block info

Name: H263ParseBlock.

Pin direction Media type Pins count
Input video H.263 video 1
Output video H.263 video 1

# The sample pipeline 

graph LR;
    DataSourceBlock["Data Source"] --> H263ParseBlock;
    H263ParseBlock --> H263DecoderBlock["H.263 Decoder Block"];
    H263DecoderBlock --> VideoRendererBlock["Video Renderer Block"];

# Platforms

Windows, macOS, Linux, iOS, Android.

# H.264 Parser Block

The H264ParseBlock parses H.264 (AVC) video elementary streams. This is one of the most widely used video codecs. The parser helps in identifying NAL units and other stream properties.

# Block info

Name: H264ParseBlock.

Pin direction Media type Pins count
Input video H.264 video 1
Output video H.264 video 1

# The sample pipeline 

graph LR;
    PushDataSource["Push Data Source (H.264 NALUs)"] --> H264ParseBlock;
    H264ParseBlock --> H264DecoderBlock["H.264 Decoder Block"];
    H264DecoderBlock --> VideoRendererBlock["Video Renderer Block"];

# Platforms

Windows, macOS, Linux, iOS, Android.

# H.265 Parser Block

The H265ParseBlock parses H.265 (HEVC) video elementary streams. H.265 offers better compression than H.264. The parser helps in identifying NAL units and other stream properties.

# Block info

Name: H265ParseBlock.

Pin direction Media type Pins count
Input video H.265 video 1
Output video H.265 video 1

# The sample pipeline 

graph LR;
    PushDataSource["Push Data Source (H.265 NALUs)"] --> H265ParseBlock;
    H265ParseBlock --> H265DecoderBlock["H.265 Decoder Block"];
    H265DecoderBlock --> VideoRendererBlock["Video Renderer Block"];

# Platforms

Windows, macOS, Linux, iOS, Android.

# JPEG 2000 Parser Block

The JPEG2000ParseBlock is used to parse JPEG 2000 video streams. JPEG 2000 is a wavelet-based compression standard that can be used for still images and video.

# Block info

Name: JPEG2000ParseBlock.

Pin direction Media type Pins count
Input video JPEG 2000 video 1
Output video JPEG 2000 video 1

# The sample pipeline 

graph LR;
    DataSourceBlock["Data Source"] --> JPEG2000ParseBlock;
    JPEG2000ParseBlock --> JPEG2000DecoderBlock["JPEG 2000 Decoder Block"];
    JPEG2000DecoderBlock --> VideoRendererBlock["Video Renderer Block"];

# Platforms

Windows, macOS, Linux, iOS, Android.

# MPEG-1/2 Video Parser Block

The MPEG12VideoParseBlock parses MPEG-1 and MPEG-2 video elementary streams. These are older but still relevant video codecs, especially MPEG-2 for DVDs and broadcast.

# Block info

Name: MPEG12VideoParseBlock.

Pin direction Media type Pins count
Input video MPEG-1/2 video 1
Output video MPEG-1/2 video 1

# The sample pipeline 

graph LR;
    DataSourceBlock["Data Source"] --> MPEG12VideoParseBlock;
    MPEG12VideoParseBlock --> MPEGVideoDecoderBlock["MPEG-1/2 Decoder Block"];
    MPEGVideoDecoderBlock --> VideoRendererBlock["Video Renderer Block"];

# Platforms

Windows, macOS, Linux, iOS, Android.

# MPEG-4 Video Parser Block

The MPEG4ParseBlock parses MPEG-4 Part 2 video elementary streams (often referred to as DivX/Xvid in its early forms).

# Block info

Name: MPEG4ParseBlock.

Pin direction Media type Pins count
Input video MPEG-4 video 1
Output video MPEG-4 video 1

# The sample pipeline 

graph LR;
    DataSourceBlock["Data Source"] --> MPEG4ParseBlock;
    MPEG4ParseBlock --> MPEG4DecoderBlock["MPEG-4 Decoder Block"];
    MPEG4DecoderBlock --> VideoRendererBlock["Video Renderer Block"];

# Platforms

Windows, macOS, Linux, iOS, Android.

# PNG Parser Block

The PNGParseBlock is used to parse PNG image data. While PNG is primarily an image format, this parser can be useful in scenarios where PNG images are part of a stream or need to be processed within the Media Blocks pipeline.

# Block info

Name: PNGParseBlock.

Pin direction Media type Pins count
Input video PNG image data 1
Output video PNG image data 1

# The sample pipeline 

graph LR;
    DataSourceBlock["Data Source (PNG data)"] --> PNGParseBlock;
    PNGParseBlock --> PNGDecoderBlock["PNG Decoder Block"];
    PNGDecoderBlock --> VideoRendererBlock["Video Renderer Block (or Image Overlay)"];

# Platforms

Windows, macOS, Linux, iOS, Android.

# VC-1 Parser Block

The VC1ParseBlock parses VC-1 video elementary streams. VC-1 was developed by Microsoft and was used in Blu-ray Discs and Windows Media Video.

# Block info

Name: VC1ParseBlock.

Pin direction Media type Pins count
Input video VC-1 video 1
Output video VC-1 video 1

# The sample pipeline 

graph LR;
    DataSourceBlock["Data Source"] --> VC1ParseBlock;
    VC1ParseBlock --> VC1DecoderBlock["VC-1 Decoder Block"];
    VC1DecoderBlock --> VideoRendererBlock["Video Renderer Block"];

# Platforms

Windows, macOS, Linux, iOS, Android.

# VP9 Parser Block

The VP9ParseBlock parses VP9 video elementary streams. VP9 is an open and royalty-free video coding format developed by Google, often used for web video.

# Block info

Name: VP9ParseBlock.

Pin direction Media type Pins count
Input video VP9 video 1
Output video VP9 video 1

# The sample pipeline 

graph LR;
    DataSourceBlock["Data Source"] --> VP9ParseBlock;
    VP9ParseBlock --> VP9DecoderBlock["VP9 Decoder Block"];
    VP9DecoderBlock --> VideoRendererBlock["Video Renderer Block"];

# Platforms

Windows, macOS, Linux, iOS, Android.

# Audio Parser Blocks

# MPEG Audio Parser Block

The MPEGAudioParseBlock parses MPEG audio elementary streams, which includes MP1, MP2, and MP3 audio.

# Block info

Name: MPEGAudioParseBlock.

Pin direction Media type Pins count
Input audio MPEG audio 1
Output audio MPEG audio 1

# The sample pipeline 

graph LR;
    DataSourceBlock["Data Source (MP3 data)"] --> MPEGAudioParseBlock;
    MPEGAudioParseBlock --> MP3DecoderBlock["MP3 Decoder Block"];
    MP3DecoderBlock --> AudioRendererBlock["Audio Renderer Block"];

# Platforms

Windows, macOS, Linux, iOS, Android.