# Mp4Extractor

Artifact: [androidx.media3:media3-extractor](https://developer.android.com/jetpack/androidx/releases/media3) [View Source](https://cs.android.com/search?q=file:androidx/media3/extractor/mp4/Mp4Extractor.java+class:androidx.media3.extractor.mp4.Mp4Extractor)

*** ** * ** ***


```
@UnstableApi
class Mp4Extractor : Extractor
```

<br />

*** ** * ** ***

Extracts data from the MP4 container format.

## Summary

| ### Nested types |
|---|
| `@https://developer.android.com/reference/java/lang/annotation/Documented.html @https://developer.android.com/reference/java/lang/annotation/Retention.html(value = https://developer.android.com/reference/java/lang/annotation/RetentionPolicy.html#SOURCE) @https://developer.android.com/reference/java/lang/annotation/Target.html(value = https://developer.android.com/reference/java/lang/annotation/ElementType.html#TYPE_USE) @https://developer.android.com/reference/kotlin/androidx/annotation/IntDef(flag = true, value = ) annotation https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor.Flags` Flags controlling the behavior of the extractor. |

| ### Constants |
|---|---|
| `const https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorsFactory!` | `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#FACTORY()` **This property is deprecated.** Use `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#newFactory(androidx.media3.extractor.text.SubtitleParser.Factory)` instead. <br /> |
| `const https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html` | `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#FLAG_DISABLE_ARTWORK_METADATA() = 512` Flag to disable parsing of artwork metadata. |
| `const https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html` | `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#FLAG_DISABLE_HAGC_METADATA() = 1024` Flag to disable parsing of HAGC (ST 2094-50) metadata. |
| `const https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html` | `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#FLAG_EMIT_RAW_MEBX_DATA() = 4096` Flag to emit `mebx` tracks as raw `https://developer.android.com/reference/kotlin/androidx/media3/common/MimeTypes#APPLICATION_MEBX()` tracks without converting `it35` keys to `https://developer.android.com/reference/kotlin/androidx/media3/common/MimeTypes#APPLICATION_ITUT_T35()` or unboxing sample payloads, regardless of whether `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#FLAG_DISABLE_HAGC_METADATA()` is set. |
| `const https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html` | `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#FLAG_EMIT_RAW_SUBTITLE_DATA() = 16` |
| `const https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html` | `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#FLAG_MARK_FIRST_VIDEO_TRACK_WITH_MAIN_ROLE() = 8` Flag to mark the first video track encountered as `https://developer.android.com/reference/kotlin/androidx/media3/common/C#ROLE_FLAG_MAIN()` and all subsequent video tracks as `https://developer.android.com/reference/kotlin/androidx/media3/common/C#ROLE_FLAG_ALTERNATE()`. |
| `const https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html` | `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#FLAG_OMIT_TRACK_SAMPLE_TABLE() = 256` Flag to omit allocating and populating the large per-sample arrays (offsets, sizes, timestamps, flags) within `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/TrackSampleTable`. |
| `const https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html` | `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#FLAG_READ_AUXILIARY_TRACKS() = 64` Flag to extract the auxiliary tracks from the MP4 With Auxiliary Tracks Extension (MP4-AT) file format. |
| `const https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html` | `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#FLAG_READ_SEF_DATA() = 4` Flag to extract `https://developer.android.com/reference/kotlin/androidx/media3/extractor/metadata/mp4/SlowMotionData` metadata from Samsung Extension Format (SEF) slow motion videos. |
| `const https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html` | `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#FLAG_READ_XMP_METADATA() = 2048` Flag to extract Adobe XMP metadata. |
| `const https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html` | `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#FLAG_WORKAROUND_IGNORE_EDIT_LISTS() = 1` Flag to ignore any edit lists in the stream. |

| ### Public constructors |
|---|
| `[Mp4Extractor](https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#Mp4Extractor())()` **This function is deprecated.** Use `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#Mp4Extractor(androidx.media3.extractor.text.SubtitleParser.Factory)` instead <br /> |
| `[Mp4Extractor](https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#Mp4Extractor(int))(@https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor.Flags flags: https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html)` **This function is deprecated.** Use `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#Mp4Extractor(androidx.media3.extractor.text.SubtitleParser.Factory,int)` instead <br /> |
| `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#Mp4Extractor(androidx.media3.extractor.text.SubtitleParser.Factory)(subtitleParserFactory: https://developer.android.com/reference/kotlin/androidx/media3/extractor/text/SubtitleParser.Factory!)` Creates a new extractor for unfragmented MP4 streams. |
| `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#Mp4Extractor(androidx.media3.extractor.text.SubtitleParser.Factory,int)( subtitleParserFactory: https://developer.android.com/reference/kotlin/androidx/media3/extractor/text/SubtitleParser.Factory!, @https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor.Flags flags: https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html )` Creates a new extractor for unfragmented MP4 streams, using the specified flags to control the extractor's behavior. |

| ### Public functions |
|---|---|
| `https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-array/index.html<https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-long/index.html>!` | `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#getSampleTimestampsUs(int)(trackId: https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html)` Returns the list of sample timestamps of a `trackId`, in microseconds. |
| `https://guava.dev/releases/snapshot-android/api/docs/com/google/common/collect/ImmutableList.html<https://developer.android.com/reference/kotlin/androidx/media3/extractor/SniffFailure!>!` | `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#getSniffFailureDetails()()` Returns additional details about the last call to `https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor#sniff(androidx.media3.extractor.ExtractorInput)`. |
| `https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-unit/index.html` | `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#init(androidx.media3.extractor.ExtractorOutput)(output: https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorOutput!)` Initializes the extractor with an `https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorOutput`. |
| `java-static https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorsFactory!` | `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#newFactory(androidx.media3.extractor.text.SubtitleParser.Factory)(subtitleParserFactory: https://developer.android.com/reference/kotlin/androidx/media3/extractor/text/SubtitleParser.Factory!)` Creates a factory for `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor` instances with the provided `https://developer.android.com/reference/kotlin/androidx/media3/extractor/text/SubtitleParser.Factory`. |
| `https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html` | `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#read(androidx.media3.extractor.ExtractorInput,androidx.media3.extractor.PositionHolder)(input: https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorInput!, seekPosition: https://developer.android.com/reference/kotlin/androidx/media3/extractor/PositionHolder!)` Extracts data read from a provided `https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorInput`. |
| `https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-unit/index.html` | `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#release()()` Releases all kept resources. |
| `https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-unit/index.html` | `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#seek(long,long)(position: https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-long/index.html, timeUs: https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-long/index.html)` Notifies the extractor that a seek has occurred. |
| `https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-boolean/index.html` | `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#sniff(androidx.media3.extractor.ExtractorInput)(input: https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorInput!)` Returns whether this extractor can extract samples from the `https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorInput`, which must provide data from the start of the stream. |

### Inherited Constants

From [androidx.media3.extractor.Extractor](https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor) `const https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html` `https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor#RESULT_CONTINUE() = 0`

Returned by `https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor#read(androidx.media3.extractor.ExtractorInput,androidx.media3.extractor.PositionHolder)` if the `https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorInput` passed to the next `https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor#read(androidx.media3.extractor.ExtractorInput,androidx.media3.extractor.PositionHolder)` is required to provide data continuing from the position in the stream reached by the returning call.
`const https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html` `https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor#RESULT_END_OF_INPUT() = -1`

Returned by `https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor#read(androidx.media3.extractor.ExtractorInput,androidx.media3.extractor.PositionHolder)` if the end of the `https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorInput` was reached.
`const https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html` `https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor#RESULT_SEEK() = 1`

Returned by `https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor#read(androidx.media3.extractor.ExtractorInput,androidx.media3.extractor.PositionHolder)` if the `https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorInput` passed to the next `https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor#read(androidx.media3.extractor.ExtractorInput,androidx.media3.extractor.PositionHolder)` is required to provide data starting from a specified position in the stream.

### Inherited functions

From [androidx.media3.extractor.Extractor](https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor) `https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor!` `@https://checkerframework.org/api/org/checkerframework/dataflow/qual/SideEffectFree.html
https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor#getUnderlyingImplementation()()`

Returns the 'real' `Extractor` implementation if this is a delegating instance, or `
this` if this instance does the extraction directly without delegating (the default behaviour).

## Constants

### FACTORY

```
const val FACTORY: ExtractorsFactory!
```

> [!CAUTION]
> **This property is deprecated.**   
>
> Use `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#newFactory(androidx.media3.extractor.text.SubtitleParser.Factory)` instead.

### FLAG_DISABLE_ARTWORK_METADATA

```
const val FLAG_DISABLE_ARTWORK_METADATA = 512: Int
```

Flag to disable parsing of artwork metadata.

### FLAG_DISABLE_HAGC_METADATA

```
const val FLAG_DISABLE_HAGC_METADATA = 1024: Int
```

Flag to disable parsing of HAGC (ST 2094-50) metadata.

### FLAG_EMIT_RAW_MEBX_DATA

```
const val FLAG_EMIT_RAW_MEBX_DATA = 4096: Int
```

Flag to emit `mebx` tracks as raw `https://developer.android.com/reference/kotlin/androidx/media3/common/MimeTypes#APPLICATION_MEBX()` tracks without converting `it35` keys to `https://developer.android.com/reference/kotlin/androidx/media3/common/MimeTypes#APPLICATION_ITUT_T35()` or unboxing sample payloads, regardless of whether `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#FLAG_DISABLE_HAGC_METADATA()` is set.

### FLAG_EMIT_RAW_SUBTITLE_DATA

```
const val FLAG_EMIT_RAW_SUBTITLE_DATA = 16: Int
```

### FLAG_MARK_FIRST_VIDEO_TRACK_WITH_MAIN_ROLE

```
const val FLAG_MARK_FIRST_VIDEO_TRACK_WITH_MAIN_ROLE = 8: Int
```

Flag to mark the first video track encountered as `https://developer.android.com/reference/kotlin/androidx/media3/common/C#ROLE_FLAG_MAIN()` and all subsequent video tracks as `https://developer.android.com/reference/kotlin/androidx/media3/common/C#ROLE_FLAG_ALTERNATE()`.

### FLAG_OMIT_TRACK_SAMPLE_TABLE

```
const val FLAG_OMIT_TRACK_SAMPLE_TABLE = 256: Int
```

Flag to omit allocating and populating the large per-sample arrays (offsets, sizes, timestamps, flags) within `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/TrackSampleTable`. This is used to reduce memory consumption in metadata retrieval scenarios where individual sample data is not required.

### FLAG_READ_AUXILIARY_TRACKS

```
const val FLAG_READ_AUXILIARY_TRACKS = 64: Int
```

Flag to extract the auxiliary tracks from the MP4 With Auxiliary Tracks Extension (MP4-AT) file format.

Either primary video tracks or auxiliary tracks (but not both) will be extracted based on the flag.

If the flag is set but the auxiliary tracks are not present, then it fallbacks to extract primary tracks instead.

See the file format at https://developer.android.com/media/platform/mp4-at-file-format.

### FLAG_READ_SEF_DATA

```
const val FLAG_READ_SEF_DATA = 4: Int
```

Flag to extract `https://developer.android.com/reference/kotlin/androidx/media3/extractor/metadata/mp4/SlowMotionData` metadata from Samsung Extension Format (SEF) slow motion videos.

### FLAG_READ_XMP_METADATA

```
const val FLAG_READ_XMP_METADATA = 2048: Int
```

Flag to extract Adobe XMP metadata.

If set, the extractor will peek for a top-level uuid box containing XMP metadata immediately following the moov box, and expose it inside `https://developer.android.com/reference/kotlin/androidx/media3/common/Format#metadata()` for all tracks.

### FLAG_WORKAROUND_IGNORE_EDIT_LISTS

```
const val FLAG_WORKAROUND_IGNORE_EDIT_LISTS = 1: Int
```

Flag to ignore any edit lists in the stream.

## Public constructors

### Mp4Extractor

```
[Mp4Extractor](https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#Mp4Extractor())()
```

> [!CAUTION]
> **This function is deprecated.**   
>
> Use `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#Mp4Extractor(androidx.media3.extractor.text.SubtitleParser.Factory)` instead

### Mp4Extractor

```
[Mp4Extractor](https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#Mp4Extractor(int))(@Mp4Extractor.Flags flags: Int)
```

> [!CAUTION]
> **This function is deprecated.**   
>
> Use `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor#Mp4Extractor(androidx.media3.extractor.text.SubtitleParser.Factory,int)` instead

### Mp4Extractor

```
Mp4Extractor(subtitleParserFactory: SubtitleParser.Factory!)
```

Creates a new extractor for unfragmented MP4 streams.

| Parameters |
|---|---|
| `subtitleParserFactory: https://developer.android.com/reference/kotlin/androidx/media3/extractor/text/SubtitleParser.Factory!` | The `https://developer.android.com/reference/kotlin/androidx/media3/extractor/text/SubtitleParser.Factory` for parsing subtitles during extraction. |

### Mp4Extractor

```
Mp4Extractor(
    subtitleParserFactory: SubtitleParser.Factory!,
    @Mp4Extractor.Flags flags: Int
)
```

Creates a new extractor for unfragmented MP4 streams, using the specified flags to control the extractor's behavior.

| Parameters |
|---|---|
| `subtitleParserFactory: https://developer.android.com/reference/kotlin/androidx/media3/extractor/text/SubtitleParser.Factory!` | The `https://developer.android.com/reference/kotlin/androidx/media3/extractor/text/SubtitleParser.Factory` for parsing subtitles during extraction. |
| `@https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor.Flags flags: https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html` | Flags that control the extractor's behavior. |

## Public functions

### getSampleTimestampsUs

```
fun getSampleTimestampsUs(trackId: Int): Array<Long>!
```

Returns the list of sample timestamps of a `trackId`, in microseconds.

| Parameters |
|---|---|
| `trackId: https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html` | The id of the track to get the sample timestamps. |

| Returns |
|---|---|
| `https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-array/index.html<https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-long/index.html>!` | The corresponding sample timestmaps of the track. |

### getSniffFailureDetails

```
fun getSniffFailureDetails(): ImmutableList<SniffFailure!>!
```

Returns additional details about the last call to `https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor#sniff(androidx.media3.extractor.ExtractorInput)`. The returned list may be empty if no additional details are available, or the last `https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor#sniff(androidx.media3.extractor.ExtractorInput)` call returned `
true`.

This only contains details that were discovered before `https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor#sniff(androidx.media3.extractor.ExtractorInput)` returned `
false`, it is not an exhaustive list of issues which, if resolved, would cause the file to be successfully sniffed.

### init

```
fun init(output: ExtractorOutput!): Unit
```

Initializes the extractor with an `https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorOutput`. Called at most once.

| Parameters |
|---|---|
| `output: https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorOutput!` | An `https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorOutput` to receive extracted data. |

### newFactory

```
java-static fun newFactory(subtitleParserFactory: SubtitleParser.Factory!): ExtractorsFactory!
```

Creates a factory for `https://developer.android.com/reference/kotlin/androidx/media3/extractor/mp4/Mp4Extractor` instances with the provided `https://developer.android.com/reference/kotlin/androidx/media3/extractor/text/SubtitleParser.Factory`.

### read

```
fun read(input: ExtractorInput!, seekPosition: PositionHolder!): Int
```

Extracts data read from a provided `https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorInput`. Must not be called before `https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor#init(androidx.media3.extractor.ExtractorOutput)`.

A single call to this method will block until some progress has been made, but will not block for longer than this. Hence each call will consume only a small amount of input data.

In the common case, `https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor#RESULT_CONTINUE()` is returned to indicate that the `https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorInput` passed to the next read is required to provide data continuing from the position in the stream reached by the returning call. If the extractor requires data to be provided from a different position, then that position is set in `seekPosition` and `https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor#RESULT_SEEK()` is returned. If the extractor reached the end of the data provided by the `https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorInput`, then `https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor#RESULT_END_OF_INPUT()` is returned.

When this method throws an `https://developer.android.com/reference/java/io/IOException.html`, extraction may continue by providing an `https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorInput` with an unchanged `https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorInput#getPosition()` to a subsequent call to this method.

| Parameters |
|---|---|
| `input: https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorInput!` | The `https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorInput` from which data should be read. |
| `seekPosition: https://developer.android.com/reference/kotlin/androidx/media3/extractor/PositionHolder!` | If `https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor#RESULT_SEEK()` is returned, this holder is updated to hold the position of the required data. |

| Returns |
|---|---|
| `https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-int/index.html` | One of the `RESULT_` values defined in this interface. |

| Throws |
|---|---|
| `https://developer.android.com/reference/java/io/IOException.html` | If an error occurred reading from or parsing the input. |

### release

```
fun release(): Unit
```

Releases all kept resources.

### seek

```
fun seek(position: Long, timeUs: Long): Unit
```

Notifies the extractor that a seek has occurred.

Following a call to this method, the `https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorInput` passed to the next invocation of `https://developer.android.com/reference/kotlin/androidx/media3/extractor/Extractor#read(androidx.media3.extractor.ExtractorInput,androidx.media3.extractor.PositionHolder)` is required to provide data starting from `
position` in the stream. Valid random access positions are the start of the stream and positions that can be obtained from any `https://developer.android.com/reference/kotlin/androidx/media3/extractor/SeekMap` passed to the `https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorOutput`.

| Parameters |
|---|---|
| `position: https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-long/index.html` | The byte offset in the stream from which data will be provided. |
| `timeUs: https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-long/index.html` | The seek time in microseconds. |

### sniff

```
fun sniff(input: ExtractorInput!): Boolean
```

Returns whether this extractor can extract samples from the `https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorInput`, which must provide data from the start of the stream.

If `true` is returned, the `input`'s reading position may have been modified. Otherwise, only its peek position may have been modified.

| Parameters |
|---|---|
| `input: https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorInput!` | The `https://developer.android.com/reference/kotlin/androidx/media3/extractor/ExtractorInput` from which data should be peeked/read. |

| Returns |
|---|---|
| `https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-boolean/index.html` | Whether this extractor can read the provided input. |

| Throws |
|---|---|
| `https://developer.android.com/reference/java/io/IOException.html` | If an error occurred reading from the input. |