SubtitleDecoder

Artifact: androidx.media3:media3-extractor

Kotlin |Java

@UnstableApi
public interface SubtitleDecoder extends 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 methods
`abstract void`	`setPositionUs(long positionUs)` Informs the decoder of the current playback position.

Inherited methods

From androidx.media3.decoder.Decoder

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

Public methods

setPositionUs

abstract void setPositionUs(long positionUs)

Informs the decoder of the current playback position.

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

Parameters
`long positionUs`	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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