Class

MkvOutputFormat

Matroska file format.

Supports writing transparent video. For a video track to be marked as transparent, the first packet added must contain alpha side data.

Extends: OutputFormat

Subclasses

• WebMOutputFormat

Constructor

constructor(
	options: MkvOutputFormatOptions = {},
): MkvOutputFormat;

Creates a new MkvOutputFormat configured with the specified options.

See MkvOutputFormatOptions.

Properties

fileExtension

get fileExtension(): string;

The file extension used by this output format, beginning with a dot.

mimeType

get mimeType(): string;

The base MIME type of the output format.

supportsVideoRotationMetadata

get supportsVideoRotationMetadata(): boolean;

Whether this output format supports video rotation metadata.

Methods

getSupportedTrackCounts()

getSupportedTrackCounts(): TrackCountLimits;

Returns the number of tracks that this output format supports.

See TrackCountLimits.

getSupportedCodecs()

getSupportedCodecs(): MediaCodec[];

Returns a list of media codecs that this output format can contain.

See MediaCodec.

getSupportedVideoCodecs()

getSupportedVideoCodecs(): "avc" | "hevc" | "vp9" | "av1" | "vp8"[];

Returns a list of video codecs that this output format can contain.

getSupportedAudioCodecs()

getSupportedAudioCodecs(): "aac" | "opus" | "mp3" | "vorbis" | "flac" | "pcm-s16" | "pcm-s16be" | "pcm-s24" | "pcm-s24be" | "pcm-s32" | "pcm-s32be" | "pcm-f32" | "pcm-f32be" | "pcm-f64" | "pcm-f64be" | "pcm-u8" | "pcm-s8" | "ulaw" | "alaw"[];

Returns a list of audio codecs that this output format can contain.

getSupportedSubtitleCodecs()

getSupportedSubtitleCodecs(): "webvtt"[];

Returns a list of subtitle codecs that this output format can contain.