Class MPEG2Settings

Namespace

VisioForge.Core.Types.FFMPEGEXE

Assembly

VisioForge.Core.dll

MPEG-2 settings.

public class MPEG2Settings : BasicVideoSettings

Inheritance

object

IBasicVideoSettings

BasicVideoSettings

MPEG2Settings

Inherited Members

IBasicVideoSettings.Width

IBasicVideoSettings.Height

IBasicVideoSettings.Letterbox

IBasicVideoSettings.AspectRatioW

IBasicVideoSettings.AspectRatioH

IBasicVideoSettings.Bitrate

IBasicVideoSettings.MaxBitrate

IBasicVideoSettings.MinBitrate

IBasicVideoSettings.Interlace

IBasicVideoSettings.TVSystem

IBasicVideoSettings.Encoder

IBasicVideoSettings.BasicMode

IBasicVideoSettings.Quality

object.Equals(object?)

object.Equals(object?, object?)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object?, object?)

object.ToString()

Remarks

Configures MPEG-2 video encoding parameters. MPEG-2 is widely used for DVD video, digital television broadcasting (DVB, ATSC), and video distribution.

MPEG-2 uses a combination of I-frames (intra-coded), P-frames (predictive), and B-frames (bidirectional) to achieve compression. The GOP (Group of Pictures) structure determines the pattern and frequency of these frame types.

Typical MPEG-2 applications: - DVD-Video (up to 9.8 Mbps) - Digital TV broadcasting (15-20 Mbps for HD) - Video archival and distribution - Professional video production workflows

Properties

BFrames

Gets or sets B-frames count.

public int BFrames { get; set; }

Property Value

int

Remarks

Specifies the maximum number of consecutive B-frames between reference frames (I-frames or P-frames). B-frames provide the highest compression but require frames from both past and future for decoding.

B-frame considerations: - 0: No B-frames (lowest latency, compatible with all decoders) - 1-2: Standard for DVD and broadcast (good quality/compression balance) - 3-5: Higher compression for file-based applications - Higher values may not be supported by all MPEG-2 decoders

More B-frames increase compression efficiency but also increase encoding complexity, decoding latency, and memory requirements. DVD standard typically uses 2 B-frames.

GOPSize

Gets or sets GOP size.

public int GOPSize { get; set; }

Property Value

int

Remarks

Specifies the number of frames in a Group of Pictures (GOP). A GOP starts with an I-frame and contains all frames until the next I-frame. Larger GOP sizes improve compression efficiency but reduce seek performance and error recovery.

Common GOP sizes: - 12-15: Standard for broadcast and DVD (NTSC) - 12-25: Standard for broadcast and DVD (PAL) - 30-60: Streaming and file-based applications - 120-300: Long-GOP for maximum compression

Default: 12 (for compatibility with DVD standards).