WebmMuxer

Kotlin |Java

@UnstableApi
public final class WebmMuxer implements Muxer

A muxer for creating a WebM container file.

Muxer supports muxing of:

Summary

Nested types
`public final class WebmMuxer.Builder` A builder for `WebmMuxer` instances.

Public methods
`void`	`addMetadataEntry(Metadata.Entry metadataEntry)` Adds `metadata` about the output file.
`int`	`addTrack(Format format)` Adds a track of the given media format.
`void`	`close()` Closes the file.
`void`	`writeSampleData( int trackId, ByteBuffer byteBuffer, BufferInfo bufferInfo )` Writes encoded sample data.

abstract void

close()

public void addMetadataEntry(Metadata.Entry metadataEntry)

Adds metadata about the output file.

public int addTrack(Format format)

Adds a track of the given media format.

All tracks must be added before any samples are written to any track.

Parameters
`Format format`	The `Format` of the track.

Returns
`int`	A track id for this track, which should be passed to `writeSampleData`.

Throws
`androidx.media3.muxer.MuxerException`	If the muxer encounters a problem while adding the track.

public void close()

Closes the file.

The muxer cannot be used anymore once this method returns.

Throws
`androidx.media3.muxer.MuxerException`	If the muxer fails to finish writing the output.

public void writeSampleData(
    int trackId,
    ByteBuffer byteBuffer,
    BufferInfo bufferInfo
)

Writes encoded sample data.

Parameters
`int trackId`	The track id for which this sample is being written.
`ByteBuffer byteBuffer`	The encoded sample. The muxer takes ownership of the buffer if `sample copying` is disabled. Otherwise, the position of the buffer is updated but the caller retains ownership.
`BufferInfo bufferInfo`	The `BufferInfo` related to this sample.

Throws
`androidx.media3.muxer.MuxerException`	If an error occurs while writing data to the output file.