MimeTypes

Kotlin |Java

public final class MimeTypes

Defines common MIME types and helper methods.

Summary

Constants
`static final String`	`APPLICATION_AIT = "application/vnd.dvb.ait"`
`static final String`	`@UnstableApi APPLICATION_CAMERA_MOTION = "application/x-camera-motion"`
`static final String`	`APPLICATION_CEA608 = "application/cea-608"`
`static final String`	`APPLICATION_CEA708 = "application/cea-708"`
`static final String`	`APPLICATION_DVBSUBS = "application/dvbsubs"`
`static final String`	`@UnstableApi APPLICATION_EMSG = "application/x-emsg"`
`static final String`	`@UnstableApi APPLICATION_EXIF = "application/x-exif"`
`static final String`	`@UnstableApi APPLICATION_EXTERNALLY_LOADED_IMAGE = "application/x-image-uri"` MIME type for an image URI loaded from an external image management framework.
`static final String`	`@UnstableApi APPLICATION_ICY = "application/x-icy"`
`static final String`	`APPLICATION_ID3 = "application/id3"`
`static final String`	`APPLICATION_M3U8 = "application/x-mpegURL"`
`static final String`	`APPLICATION_MATROSKA = "application/x-matroska"`
`static final String`	`@UnstableApi APPLICATION_MEDIA3_CUES = "application/x-media3-cues"`
`static final String`	`APPLICATION_MP4 = "application/mp4"`
`static final String`	`APPLICATION_MP4CEA608 = "application/x-mp4-cea-608"`
`static final String`	`APPLICATION_MP4VTT = "application/x-mp4-vtt"`
`static final String`	`APPLICATION_MPD = "application/dash+xml"`
`static final String`	`APPLICATION_PGS = "application/pgs"`
`static final String`	`APPLICATION_RAWCC = "application/x-rawcc"` This field is deprecated. RawCC is a Google-internal subtitle format that isn't supported by this version of Media3.
`static final String`	`APPLICATION_RTSP = "application/x-rtsp"`
`static final String`	`@UnstableApi APPLICATION_SCTE35 = "application/x-scte35"`
`static final String`	`APPLICATION_SS = "application/vnd.ms-sstr+xml"`
`static final String`	`APPLICATION_SUBRIP = "application/x-subrip"`
`static final String`	`APPLICATION_TTML = "application/ttml+xml"`
`static final String`	`APPLICATION_TX3G = "application/x-quicktime-tx3g"`
`static final String`	`APPLICATION_VOBSUB = "application/vobsub"`
`static final String`	`APPLICATION_WEBM = "application/webm"`
`static final String`	`AUDIO_AAC = "audio/mp4a-latm"`
`static final String`	`AUDIO_AC3 = "audio/ac3"`
`static final String`	`AUDIO_AC4 = "audio/ac4"`
`static final String`	`AUDIO_ALAC = "audio/alac"`
`static final String`	`AUDIO_ALAW = "audio/g711-alaw"`
`static final String`	`AUDIO_AMR = "audio/amr"`
`static final String`	`AUDIO_AMR_NB = "audio/3gpp"`
`static final String`	`AUDIO_AMR_WB = "audio/amr-wb"`
`static final String`	`AUDIO_DTS = "audio/vnd.dts"`
`static final String`	`AUDIO_DTS_EXPRESS = "audio/vnd.dts.hd;profile=lbr"`
`static final String`	`AUDIO_DTS_HD = "audio/vnd.dts.hd"`
`static final String`	`@UnstableApi AUDIO_DTS_X = "audio/vnd.dts.uhd;profile=p2"`
`static final String`	`@UnstableApi AUDIO_EXOPLAYER_MIDI = "audio/x-exoplayer-midi"`
`static final String`	`AUDIO_E_AC3 = "audio/eac3"`
`static final String`	`AUDIO_E_AC3_JOC = "audio/eac3-joc"`
`static final String`	`AUDIO_FLAC = "audio/flac"`
`static final String`	`@UnstableApi AUDIO_MATROSKA = "audio/x-matroska"`
`static final String`	`AUDIO_MIDI = "audio/midi"`
`static final String`	`AUDIO_MLAW = "audio/g711-mlaw"`
`static final String`	`AUDIO_MP4 = "audio/mp4"`
`static final String`	`AUDIO_MPEG = "audio/mpeg"`
`static final String`	`AUDIO_MPEGH_MHA1 = "audio/mha1"`
`static final String`	`AUDIO_MPEGH_MHM1 = "audio/mhm1"`
`static final String`	`AUDIO_MPEG_L1 = "audio/mpeg-L1"`
`static final String`	`AUDIO_MPEG_L2 = "audio/mpeg-L2"`
`static final String`	`AUDIO_MSGSM = "audio/gsm"`
`static final String`	`AUDIO_OGG = "audio/ogg"`
`static final String`	`AUDIO_OPUS = "audio/opus"`
`static final String`	`AUDIO_RAW = "audio/raw"`
`static final String`	`AUDIO_TRUEHD = "audio/true-hd"`
`static final String`	`@UnstableApi AUDIO_UNKNOWN = "audio/x-unknown"`
`static final String`	`AUDIO_VORBIS = "audio/vorbis"`
`static final String`	`AUDIO_WAV = "audio/wav"`
`static final String`	`AUDIO_WEBM = "audio/webm"`
`static final String`	`@UnstableApi BASE_TYPE_APPLICATION = "application"`
`static final String`	`@UnstableApi BASE_TYPE_AUDIO = "audio"`
`static final String`	`@UnstableApi BASE_TYPE_IMAGE = "image"`
`static final String`	`@UnstableApi BASE_TYPE_TEXT = "text"`
`static final String`	`@UnstableApi BASE_TYPE_VIDEO = "video"`
`static final String`	`@UnstableApi CODEC_E_AC3_JOC = "ec+3"` A non-standard codec string for E-AC3-JOC.
`static final String`	`@UnstableApi IMAGE_BMP = "image/bmp"`
`static final String`	`@UnstableApi IMAGE_HEIF = "image/heif"`
`static final String`	`IMAGE_JPEG = "image/jpeg"`
`static final String`	`@UnstableApi IMAGE_PNG = "image/png"`
`static final String`	`@UnstableApi IMAGE_WEBP = "image/webp"`
`static final String`	`TEXT_SSA = "text/x-ssa"`
`static final String`	`@UnstableApi TEXT_UNKNOWN = "text/x-unknown"`
`static final String`	`TEXT_VTT = "text/vtt"`
`static final String`	`VIDEO_AV1 = "video/av01"`
`static final String`	`VIDEO_AVI = "video/x-msvideo"`
`static final String`	`VIDEO_DIVX = "video/divx"`
`static final String`	`VIDEO_DOLBY_VISION = "video/dolby-vision"`
`static final String`	`@UnstableApi VIDEO_FLV = "video/x-flv"`
`static final String`	`VIDEO_H263 = "video/3gpp"`
`static final String`	`VIDEO_H264 = "video/avc"`
`static final String`	`VIDEO_H265 = "video/hevc"`
`static final String`	`@UnstableApi VIDEO_MATROSKA = "video/x-matroska"`
`static final String`	`VIDEO_MJPEG = "video/mjpeg"`
`static final String`	`VIDEO_MP2T = "video/mp2t"`
`static final String`	`VIDEO_MP4 = "video/mp4"`
`static final String`	`VIDEO_MP42 = "video/mp42"`
`static final String`	`VIDEO_MP43 = "video/mp43"`
`static final String`	`VIDEO_MP4V = "video/mp4v-es"`
`static final String`	`VIDEO_MPEG = "video/mpeg"`
`static final String`	`VIDEO_MPEG2 = "video/mpeg2"`
`static final String`	`VIDEO_OGG = "video/ogg"`
`static final String`	`VIDEO_PS = "video/mp2p"`
`static final String`	`@UnstableApi VIDEO_RAW = "video/raw"`
`static final String`	`@UnstableApi VIDEO_UNKNOWN = "video/x-unknown"`
`static final String`	`VIDEO_VC1 = "video/wvc1"`
`static final String`	`@UnstableApi VIDEO_VP8 = "video/x-vnd.on2.vp8"`
`static final String`	`@UnstableApi VIDEO_VP9 = "video/x-vnd.on2.vp9"`
`static final String`	`VIDEO_WEBM = "video/webm"`

Public methods
`static boolean`	`@UnstableApi allSamplesAreSyncSamples(@Nullable String mimeType, @Nullable String codec)` Returns true if it is known that all samples in a stream of the given MIME type and codec are guaranteed to be sync samples (i.e., `BUFFER_FLAG_KEY_FRAME` is guaranteed to be set on every sample) and the inherent duration of each sample is negligible (i.e., we never expect to require a sample because playback partially falls into its duration).
`static boolean`	`@UnstableApi containsCodecsCorrespondingToMimeType( @Nullable String codecs, String mimeType )` Returns whether the given `codecs` string contains a codec which corresponds to the given `mimeType`.
`static @Nullable String`	`@UnstableApi getAudioMediaMimeType(@Nullable String codecs)` Returns the first audio MIME type derived from an RFC 6381 codecs string.
`static @Nullable String`	`@UnstableApi getCodecsCorrespondingToMimeType( @Nullable String codecs, @Nullable String mimeType )` Returns a subsequence of `codecs` containing the codec strings that correspond to the given `mimeType`.
`static int`	`@UnstableApi @C.Encoding getEncoding(String mimeType, @Nullable String codec)` Returns the `C.Encoding` constant corresponding to the specified audio MIME type and RFC 6381 codec string, or `ENCODING_INVALID` if the corresponding `C.Encoding` cannot be determined.
`static @Nullable String`	`@UnstableApi getMediaMimeType(@Nullable String codec)` Returns the MIME type corresponding to an RFC 6381 codec string, or `null` if it could not be determined.
`static @Nullable String`	`@UnstableApi getMimeTypeFromMp4ObjectType(int objectType)` Returns the MIME type corresponding to an MP4 object type identifier, as defined in RFC 6381 and https://mp4ra.org/#/object_types.
`static @Nullable String`	`@UnstableApi getTextMediaMimeType(@Nullable String codecs)` Returns the first text MIME type derived from an RFC 6381 codecs string.
`static int`	`@UnstableApi @C.TrackType getTrackType(@Nullable String mimeType)` Returns the `track type` constant corresponding to a specified MIME type, which may be `TRACK_TYPE_UNKNOWN` if it could not be determined.
`static int`	`@UnstableApi @C.TrackType getTrackTypeOfCodec(String codec)` Equivalent to `getTrackType(getMediaMimeType(codec))`.
`static @Nullable String`	`@UnstableApi getVideoMediaMimeType(@Nullable String codecs)` Returns the first video MIME type derived from an RFC 6381 codecs string.
`static boolean`	`@UnstableApi isAudio(@Nullable String mimeType)` Returns whether the given string is an audio MIME type.
`static boolean`	`@UnstableApi isImage(@Nullable String mimeType)` Returns whether the given string is an image MIME type.
`static boolean`	`@UnstableApi isMatroska(@Nullable String mimeType)` Returns whether the given `mimeType` is a Matroska MIME type, including WebM.
`static boolean`	`@UnstableApi @Pure isText(@Nullable String mimeType)` Returns whether the given string is a text MIME type, including known text types that use "application" as their base type.
`static boolean`	`@UnstableApi isVideo(@Nullable String mimeType)` Returns whether the given string is a video MIME type.
`static @PolyNull String`	`@UnstableApi @PolyNull normalizeMimeType(@PolyNull @PolyNull String mimeType)` Normalizes the MIME type provided so that equivalent MIME types are uniquely represented.
`static void`	`@UnstableApi registerCustomMimeType( String mimeType, String codecPrefix, @C.TrackType int trackType )` Registers a custom MIME type.

Constants

APPLICATION_AIT

public static final String APPLICATION_AIT = "application/vnd.dvb.ait"

APPLICATION_CAMERA_MOTION

@UnstableApi
public static final String APPLICATION_CAMERA_MOTION = "application/x-camera-motion"

APPLICATION_CEA608

public static final String APPLICATION_CEA608 = "application/cea-608"

APPLICATION_CEA708

public static final String APPLICATION_CEA708 = "application/cea-708"

APPLICATION_DVBSUBS

public static final String APPLICATION_DVBSUBS = "application/dvbsubs"

APPLICATION_EMSG

@UnstableApi
public static final String APPLICATION_EMSG = "application/x-emsg"

APPLICATION_EXIF

@UnstableApi
public static final String APPLICATION_EXIF = "application/x-exif"

APPLICATION_EXTERNALLY_LOADED_IMAGE

@UnstableApi
public static final String APPLICATION_EXTERNALLY_LOADED_IMAGE = "application/x-image-uri"

MIME type for an image URI loaded from an external image management framework.

APPLICATION_ICY

@UnstableApi
public static final String APPLICATION_ICY = "application/x-icy"

APPLICATION_ID3

public static final String APPLICATION_ID3 = "application/id3"

APPLICATION_M3U8

public static final String APPLICATION_M3U8 = "application/x-mpegURL"

APPLICATION_MATROSKA

public static final String APPLICATION_MATROSKA = "application/x-matroska"

APPLICATION_MEDIA3_CUES

@UnstableApi
public static final String APPLICATION_MEDIA3_CUES = "application/x-media3-cues"

APPLICATION_MP4

public static final String APPLICATION_MP4 = "application/mp4"

APPLICATION_MP4CEA608

public static final String APPLICATION_MP4CEA608 = "application/x-mp4-cea-608"

APPLICATION_MP4VTT

public static final String APPLICATION_MP4VTT = "application/x-mp4-vtt"

APPLICATION_MPD

public static final String APPLICATION_MPD = "application/dash+xml"

APPLICATION_PGS

public static final String APPLICATION_PGS = "application/pgs"

APPLICATION_RAWCC

public static final String APPLICATION_RAWCC = "application/x-rawcc"

APPLICATION_RTSP

public static final String APPLICATION_RTSP = "application/x-rtsp"

APPLICATION_SCTE35

@UnstableApi
public static final String APPLICATION_SCTE35 = "application/x-scte35"

APPLICATION_SS

public static final String APPLICATION_SS = "application/vnd.ms-sstr+xml"

APPLICATION_SUBRIP

public static final String APPLICATION_SUBRIP = "application/x-subrip"

APPLICATION_TTML

public static final String APPLICATION_TTML = "application/ttml+xml"

APPLICATION_TX3G

public static final String APPLICATION_TX3G = "application/x-quicktime-tx3g"

APPLICATION_VOBSUB

public static final String APPLICATION_VOBSUB = "application/vobsub"

APPLICATION_WEBM

public static final String APPLICATION_WEBM = "application/webm"

AUDIO_AAC

public static final String AUDIO_AAC = "audio/mp4a-latm"

AUDIO_AC3

public static final String AUDIO_AC3 = "audio/ac3"

AUDIO_AC4

public static final String AUDIO_AC4 = "audio/ac4"

AUDIO_ALAC

public static final String AUDIO_ALAC = "audio/alac"

AUDIO_ALAW

public static final String AUDIO_ALAW = "audio/g711-alaw"

AUDIO_AMR

public static final String AUDIO_AMR = "audio/amr"

AUDIO_AMR_NB

public static final String AUDIO_AMR_NB = "audio/3gpp"

AUDIO_AMR_WB

public static final String AUDIO_AMR_WB = "audio/amr-wb"

AUDIO_DTS

public static final String AUDIO_DTS = "audio/vnd.dts"

AUDIO_DTS_EXPRESS

public static final String AUDIO_DTS_EXPRESS = "audio/vnd.dts.hd;profile=lbr"

AUDIO_DTS_HD

public static final String AUDIO_DTS_HD = "audio/vnd.dts.hd"

AUDIO_DTS_X

@UnstableApi
public static final String AUDIO_DTS_X = "audio/vnd.dts.uhd;profile=p2"

AUDIO_EXOPLAYER_MIDI

@UnstableApi
public static final String AUDIO_EXOPLAYER_MIDI = "audio/x-exoplayer-midi"

AUDIO_E_AC3

public static final String AUDIO_E_AC3 = "audio/eac3"

AUDIO_E_AC3_JOC

public static final String AUDIO_E_AC3_JOC = "audio/eac3-joc"

AUDIO_FLAC

public static final String AUDIO_FLAC = "audio/flac"

AUDIO_MATROSKA

@UnstableApi
public static final String AUDIO_MATROSKA = "audio/x-matroska"

AUDIO_MIDI

public static final String AUDIO_MIDI = "audio/midi"

AUDIO_MLAW

public static final String AUDIO_MLAW = "audio/g711-mlaw"

AUDIO_MP4

public static final String AUDIO_MP4 = "audio/mp4"

AUDIO_MPEG

public static final String AUDIO_MPEG = "audio/mpeg"

AUDIO_MPEGH_MHA1

public static final String AUDIO_MPEGH_MHA1 = "audio/mha1"

AUDIO_MPEGH_MHM1

public static final String AUDIO_MPEGH_MHM1 = "audio/mhm1"

AUDIO_MPEG_L1

public static final String AUDIO_MPEG_L1 = "audio/mpeg-L1"

AUDIO_MPEG_L2

public static final String AUDIO_MPEG_L2 = "audio/mpeg-L2"

AUDIO_MSGSM

public static final String AUDIO_MSGSM = "audio/gsm"

AUDIO_OGG

public static final String AUDIO_OGG = "audio/ogg"

AUDIO_OPUS

public static final String AUDIO_OPUS = "audio/opus"

AUDIO_RAW

public static final String AUDIO_RAW = "audio/raw"

AUDIO_TRUEHD

public static final String AUDIO_TRUEHD = "audio/true-hd"

AUDIO_UNKNOWN

@UnstableApi
public static final String AUDIO_UNKNOWN = "audio/x-unknown"

AUDIO_VORBIS

public static final String AUDIO_VORBIS = "audio/vorbis"

AUDIO_WAV

public static final String AUDIO_WAV = "audio/wav"

AUDIO_WEBM

public static final String AUDIO_WEBM = "audio/webm"

BASE_TYPE_APPLICATION

@UnstableApi
public static final String BASE_TYPE_APPLICATION = "application"

BASE_TYPE_AUDIO

@UnstableApi
public static final String BASE_TYPE_AUDIO = "audio"

BASE_TYPE_IMAGE

@UnstableApi
public static final String BASE_TYPE_IMAGE = "image"

BASE_TYPE_TEXT

@UnstableApi
public static final String BASE_TYPE_TEXT = "text"

BASE_TYPE_VIDEO

@UnstableApi
public static final String BASE_TYPE_VIDEO = "video"

CODEC_E_AC3_JOC

@UnstableApi
public static final String CODEC_E_AC3_JOC = "ec+3"

A non-standard codec string for E-AC3-JOC. Use of this constant allows for disambiguation between regular E-AC3 ("ec-3") and E-AC3-JOC ("ec+3") streams from the codec string alone. The standard is to use "ec-3" for both, as per the MP4RA registered codec types.

IMAGE_BMP

@UnstableApi
public static final String IMAGE_BMP = "image/bmp"

IMAGE_HEIF

@UnstableApi
public static final String IMAGE_HEIF = "image/heif"

IMAGE_JPEG

public static final String IMAGE_JPEG = "image/jpeg"

IMAGE_PNG

@UnstableApi
public static final String IMAGE_PNG = "image/png"

IMAGE_WEBP

@UnstableApi
public static final String IMAGE_WEBP = "image/webp"

TEXT_SSA

public static final String TEXT_SSA = "text/x-ssa"

TEXT_UNKNOWN

@UnstableApi
public static final String TEXT_UNKNOWN = "text/x-unknown"

TEXT_VTT

public static final String TEXT_VTT = "text/vtt"

VIDEO_AV1

public static final String VIDEO_AV1 = "video/av01"

VIDEO_AVI

public static final String VIDEO_AVI = "video/x-msvideo"

VIDEO_DIVX

public static final String VIDEO_DIVX = "video/divx"

VIDEO_DOLBY_VISION

public static final String VIDEO_DOLBY_VISION = "video/dolby-vision"

VIDEO_FLV

@UnstableApi
public static final String VIDEO_FLV = "video/x-flv"

VIDEO_H263

public static final String VIDEO_H263 = "video/3gpp"

VIDEO_H264

public static final String VIDEO_H264 = "video/avc"

VIDEO_H265

public static final String VIDEO_H265 = "video/hevc"

VIDEO_MATROSKA

@UnstableApi
public static final String VIDEO_MATROSKA = "video/x-matroska"

VIDEO_MJPEG

public static final String VIDEO_MJPEG = "video/mjpeg"

VIDEO_MP2T

public static final String VIDEO_MP2T = "video/mp2t"

VIDEO_MP4

public static final String VIDEO_MP4 = "video/mp4"

VIDEO_MP42

public static final String VIDEO_MP42 = "video/mp42"

VIDEO_MP43

public static final String VIDEO_MP43 = "video/mp43"

VIDEO_MP4V

public static final String VIDEO_MP4V = "video/mp4v-es"

VIDEO_MPEG

public static final String VIDEO_MPEG = "video/mpeg"

VIDEO_MPEG2

public static final String VIDEO_MPEG2 = "video/mpeg2"

VIDEO_OGG

public static final String VIDEO_OGG = "video/ogg"

VIDEO_PS

public static final String VIDEO_PS = "video/mp2p"

VIDEO_RAW

@UnstableApi
public static final String VIDEO_RAW = "video/raw"

VIDEO_UNKNOWN

@UnstableApi
public static final String VIDEO_UNKNOWN = "video/x-unknown"

VIDEO_VC1

public static final String VIDEO_VC1 = "video/wvc1"

VIDEO_VP8

@UnstableApi
public static final String VIDEO_VP8 = "video/x-vnd.on2.vp8"

VIDEO_VP9

@UnstableApi
public static final String VIDEO_VP9 = "video/x-vnd.on2.vp9"

VIDEO_WEBM

public static final String VIDEO_WEBM = "video/webm"

Public methods

allSamplesAreSyncSamples

@UnstableApi
public static boolean allSamplesAreSyncSamples(@Nullable String mimeType, @Nullable String codec)

Returns true if it is known that all samples in a stream of the given MIME type and codec are guaranteed to be sync samples (i.e., BUFFER_FLAG_KEY_FRAME is guaranteed to be set on every sample) and the inherent duration of each sample is negligible (i.e., we never expect to require a sample because playback partially falls into its duration).

Parameters
`@Nullable String mimeType`	The MIME type of the stream.
`@Nullable String codec`	The RFC 6381 codec string of the stream, or `null` if unknown.

Returns
`boolean`	Whether it is known that all samples in the stream are guaranteed to be sync samples.

containsCodecsCorrespondingToMimeType

@UnstableApi
public static boolean containsCodecsCorrespondingToMimeType(
    @Nullable String codecs,
    String mimeType
)

Returns whether the given codecs string contains a codec which corresponds to the given mimeType.

Parameters
`@Nullable String codecs`	An RFC 6381 codecs string.
`String mimeType`	A MIME type to look for.

Returns
`boolean`	Whether the given `codecs` string contains a codec which corresponds to the given `mimeType`.

getAudioMediaMimeType

@UnstableApi
public static @Nullable String getAudioMediaMimeType(@Nullable String codecs)

Returns the first audio MIME type derived from an RFC 6381 codecs string.

Parameters
`@Nullable String codecs`	An RFC 6381 codecs string.

Returns
`@Nullable String`	The first derived audio MIME type, or `null`.

getCodecsCorrespondingToMimeType

@UnstableApi
public static @Nullable String getCodecsCorrespondingToMimeType(
    @Nullable String codecs,
    @Nullable String mimeType
)

Returns a subsequence of codecs containing the codec strings that correspond to the given mimeType. Returns null if mimeType is null, codecs is null, or codecs does not contain a codec that corresponds to mimeType.

Parameters
`@Nullable String codecs`	An RFC 6381 codecs string.
`@Nullable String mimeType`	A MIME type to look for.

Returns
`@Nullable String`	A subsequence of `codecs` containing the codec strings that correspond to the given `mimeType`. Returns null if `mimeType` is null, `codecs` is null, or `codecs` does not contain a codec that corresponds to `mimeType`.

getEncoding

@UnstableApi
@C.Encoding
public static int getEncoding(String mimeType, @Nullable String codec)

Returns the C.Encoding constant corresponding to the specified audio MIME type and RFC 6381 codec string, or ENCODING_INVALID if the corresponding C.Encoding cannot be determined.

Parameters
`String mimeType`	A MIME type.
`@Nullable String codec`	An RFC 6381 codec string, or `null` if unknown or not applicable.

Returns
`int`	The corresponding `C.Encoding`, or `ENCODING_INVALID`.

getMediaMimeType

@UnstableApi
public static @Nullable String getMediaMimeType(@Nullable String codec)

Returns the MIME type corresponding to an RFC 6381 codec string, or null if it could not be determined.

Parameters
`@Nullable String codec`	An RFC 6381 codec string.

Returns
`@Nullable String`	The corresponding MIME type, or `null` if it could not be determined.

getMimeTypeFromMp4ObjectType

@UnstableApi
public static @Nullable String getMimeTypeFromMp4ObjectType(int objectType)

Returns the MIME type corresponding to an MP4 object type identifier, as defined in RFC 6381 and https://mp4ra.org/#/object_types.

Parameters
`int objectType`	An MP4 object type identifier.

Returns
`@Nullable String`	The corresponding MIME type, or `null` if it could not be determined.

getTextMediaMimeType

@UnstableApi
public static @Nullable String getTextMediaMimeType(@Nullable String codecs)

Returns the first text MIME type derived from an RFC 6381 codecs string.

Parameters
`@Nullable String codecs`	An RFC 6381 codecs string.

Returns
`@Nullable String`	The first derived text MIME type, or `null`.

getTrackType

@UnstableApi
@C.TrackType
public static int getTrackType(@Nullable String mimeType)

Returns the track type constant corresponding to a specified MIME type, which may be TRACK_TYPE_UNKNOWN if it could not be determined.

Parameters
`@Nullable String mimeType`	A MIME type.

Returns
`int`	The corresponding `track type`, which may be `TRACK_TYPE_UNKNOWN` if it could not be determined.

getTrackTypeOfCodec

@UnstableApi
@C.TrackType
public static int getTrackTypeOfCodec(String codec)

Equivalent to getTrackType(getMediaMimeType(codec)).

Parameters
`String codec`	An RFC 6381 codec string.

Returns
`int`	The corresponding `track type`, which may be `TRACK_TYPE_UNKNOWN` if it could not be determined.

getVideoMediaMimeType

@UnstableApi
public static @Nullable String getVideoMediaMimeType(@Nullable String codecs)

Returns the first video MIME type derived from an RFC 6381 codecs string.

Parameters
`@Nullable String codecs`	An RFC 6381 codecs string.

Returns
`@Nullable String`	The first derived video MIME type, or `null`.

isAudio

@UnstableApi
public static boolean isAudio(@Nullable String mimeType)

Returns whether the given string is an audio MIME type.

isImage

@UnstableApi
public static boolean isImage(@Nullable String mimeType)

Returns whether the given string is an image MIME type.

isMatroska

@UnstableApi
public static boolean isMatroska(@Nullable String mimeType)

Returns whether the given mimeType is a Matroska MIME type, including WebM.

isText

@UnstableApi
@Pure
public static boolean isText(@Nullable String mimeType)

Returns whether the given string is a text MIME type, including known text types that use "application" as their base type.

isVideo

@UnstableApi
public static boolean isVideo(@Nullable String mimeType)

Returns whether the given string is a video MIME type.

normalizeMimeType

@UnstableApi
@PolyNull
public static @PolyNull String normalizeMimeType(@PolyNull @PolyNull String mimeType)

Normalizes the MIME type provided so that equivalent MIME types are uniquely represented.

Parameters
`@PolyNull @PolyNull String mimeType`	A MIME type to normalize, or null.

Returns
`@PolyNull String`	The normalized MIME type, or the argument MIME type if its normalized form is unknown.

registerCustomMimeType

@UnstableApi
public static void registerCustomMimeType(
    String mimeType,
    String codecPrefix,
    @C.TrackType int trackType
)

Registers a custom MIME type. Most applications do not need to call this method, as handling of standard MIME types is built in. These built-in MIME types take precedence over any registered via this method. If this method is used, it must be called before creating any player(s).

Parameters
`String mimeType`	The custom MIME type to register.
`String codecPrefix`	The RFC 6381 codec string prefix associated with the MIME type.
`@C.TrackType int trackType`	The `track type` associated with the MIME type. This value is ignored if the top-level type of `mimeType` is audio, video or text.