DefaultMuxer.Factory

Artifact: androidx.media3:media3-transformer

Kotlin |Java

class DefaultMuxer.Factory : Muxer.Factory

A Muxer.Factory for DefaultMuxer.

Summary

Public constructors
`Factory()` Creates an instance.
`Factory(videoDurationMs: Long)` This function is deprecated. Use `setVideoDurationUs` instead.

Public constructors

Factory()

Creates an instance.

Factory(videoDurationMs: Long)

This function is deprecated.

Use setVideoDurationUs instead.

Public functions
`Muxer!`	`create(path: String!)` Returns a new `Muxer`.
`Muxer!`	`create(pfd: ParcelFileDescriptor!)` Returns a new `Muxer`.
`ImmutableList<String!>!`	`getSupportedSampleMimeTypes(@C.TrackType trackType: Int)` Returns the supported sample `MIME types` for the given `C.TrackType`.
`DefaultMuxer.Factory!`	`@CanIgnoreReturnValue setVideoDurationUs(videoDurationUs: Long)` Sets the duration of the video track (in microseconds) to enforce in the output.
`Boolean`	`supportsWritingNegativeTimestampsInEditList()` Whether the muxer supports writing negative timestamps into an edit list to instruct players to ignore these samples.

Public constructors

Factory

Factory()

Creates an instance.

Factory

Factory(videoDurationMs: Long)

Public functions

create

fun create(path: String!): Muxer!

Returns a new Muxer.

Parameters
`path: String!`	The path to the output file.

Throws
`androidx.media3.muxer.MuxerException`	If an error occurs opening the output file for writing.

create

fun create(pfd: ParcelFileDescriptor!): Muxer!

Returns a new Muxer.

The caller transfers ownership of the ParcelFileDescriptor to the Factory. If this method returns successfully, the created Muxer is responsible for closing the descriptor when close is called. If an error occurs and a MuxerException is thrown, the descriptor is closed before the exception is thrown.

Whether the provided ParcelFileDescriptor must be seekable depends on the container format and Muxer implementation. For example, standard MP4 muxers require seekable descriptors (such as those opened with "rwt" or "rw"), whereas streaming muxers (such as fragmented MP4 muxers) also accept non-seekable streams like pipes.

Parameters
`pfd: ParcelFileDescriptor!`	the `ParcelFileDescriptor` to write output to

Throws
`androidx.media3.muxer.MuxerException`	if an error occurs opening the output for writing or if the descriptor does not satisfy the seekability requirements of the muxer

getSupportedSampleMimeTypes

fun getSupportedSampleMimeTypes(@C.TrackType trackType: Int): ImmutableList<String!>!

Returns the supported sample MIME types for the given C.TrackType.

setVideoDurationUs

@CanIgnoreReturnValue
fun setVideoDurationUs(videoDurationUs: Long): DefaultMuxer.Factory!

Sets the duration of the video track (in microseconds) to enforce in the output.

The default is TIME_UNSET.

Parameters
`videoDurationUs: Long`	The duration of the video track (in microseconds) to enforce in the output, or `TIME_UNSET` to not enforce. Only applicable when a video track is `added`.

Returns
`DefaultMuxer.Factory!`	This factory.

supportsWritingNegativeTimestampsInEditList

fun supportsWritingNegativeTimestampsInEditList(): Boolean

Whether the muxer supports writing negative timestamps into an edit list to instruct players to ignore these samples.