SubtitleDecoder

Artifact: androidx.media3:media3-extractor

Kotlin |Java

@UnstableApi
interface SubtitleDecoder : Decoder

Known direct subclasses

Cea608Decoder, Cea708Decoder, SimpleSubtitleDecoder

`Cea608Decoder`	A `SubtitleDecoder` for CEA-608 (also known as "line 21 captions" and "EIA-608").
`Cea708Decoder`	A `SubtitleDecoder` for CEA-708 (also known as "EIA-708").
`SimpleSubtitleDecoder`	Base class for subtitle parsers that use their own decode thread.

Decodes Subtitles from SubtitleInputBuffers.

Summary

Public functions
`Unit`	`setPositionUs(positionUs: Long)` Informs the decoder of the current playback position.

Inherited functions

From androidx.media3.decoder.Decoder

`I?`	`dequeueInputBuffer()` Dequeues the next input buffer to be filled and queued to the decoder.
`O?`	`dequeueOutputBuffer()` Dequeues the next output buffer from the decoder.
`Unit`	`flush()` Flushes the decoder.
`String!`	`getName()` Returns the name of the decoder.
`Unit`	`queueInputBuffer(inputBuffer: I!)` Queues an input buffer to the decoder.
`Unit`	`release()` Releases the decoder.
`Unit`	`setOutputStartTimeUs(outputStartTimeUs: Long)` Sets the timestamp from which output buffers should be produced, in microseconds.

Public functions

setPositionUs

fun setPositionUs(positionUs: Long): Unit

Informs the decoder of the current playback position.

Must be called prior to each attempt to dequeue output buffers from the decoder.

Parameters
`positionUs: Long`	The current playback position in microseconds.

Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.

Last updated 2025-05-15 UTC.

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