FragmentedMp4Extractor

public static final int FLAG_DISABLE_ARTWORK_METADATA = 1024

Flag to disable parsing of artwork metadata.

public static final int FLAG_EMIT_RAW_SUBTITLE_DATA = 32

Flag to use the source subtitle formats without modification. If unset, subtitles will be transcoded to APPLICATION_MEDIA3_CUES during extraction.

public static final int FLAG_ENABLE_EMSG_TRACK = 4

Flag to indicate that the extractor should output an event message metadata track. Any event messages in the stream will be delivered as samples to this track.

public static final int FLAG_MERGE_FRAGMENTED_SIDX = 256

Flag to enable reading and merging of all sidx boxes before continuing extraction.

public static final int FLAG_READ_MFRA_FOR_SEEK_MAP = 512

Flag to enable reading the 'mfra' box for seeking in fragmented MP4s.

public static final int FLAG_READ_WITHIN_GOP_SAMPLE_DEPENDENCIES = 64

Flag to extract additional sample dependency information, and mark output buffers with BUFFER_FLAG_NOT_DEPENDED_ON for H.264 video.

This class always marks the samples at the start of each group of picture (GOP) with BUFFER_FLAG_KEY_FRAME. Usually, key frames can be decoded independently, without depending on other samples.

Setting this flag enables elementary stream parsing to identify disposable samples that are not depended on by other samples. Any disposable sample can be safely omitted, and the rest of the track will remain valid.

public static final int FLAG_READ_WITHIN_GOP_SAMPLE_DEPENDENCIES_H265 = 128

Flag to extract additional sample dependency information, and mark output buffers with BUFFER_FLAG_NOT_DEPENDED_ON for H.265 video.

See FLAG_READ_WITHIN_GOP_SAMPLE_DEPENDENCIES.

public static final int FLAG_WORKAROUND_EVERY_VIDEO_FRAME_IS_SYNC_FRAME = 1

Flag to work around an issue in some video streams where every frame is marked as a sync frame. The workaround overrides the sync frame flags in the stream, forcing them to false except for the first sample in each segment.

This flag does nothing if the stream is not a video stream.

public static final int FLAG_WORKAROUND_IGNORE_EDIT_LISTS = 16

Flag to ignore any edit lists in the stream.

public static final int FLAG_WORKAROUND_IGNORE_TFDT_BOX = 2

Flag to ignore any tfdt boxes in the stream.

public FragmentedMp4Extractor(SubtitleParser.Factory subtitleParserFactory)

Constructs an instance.

public FragmentedMp4Extractor(
    SubtitleParser.Factory subtitleParserFactory,
    @FragmentedMp4Extractor.Flags int flags
)

Constructs an instance.

public FragmentedMp4Extractor(
    SubtitleParser.Factory subtitleParserFactory,
    @FragmentedMp4Extractor.Flags int flags,
    @Nullable TimestampAdjuster timestampAdjuster,
    @Nullable Track sideloadedTrack,
    List<Format> closedCaptionFormats,
    @Nullable TrackOutput additionalEmsgTrackOutput
)

Constructs an instance.

@FragmentedMp4Extractor.Flags
public static int codecsToParseWithinGopSampleDependenciesAsFlags(
    @C.VideoCodecFlags int videoCodecFlags
)

Returns Flags denoting if an extractor should parse within GOP sample dependencies.

public ImmutableList<SniffFailure> getSniffFailureDetails()

Returns additional details about the last call to sniff. The returned list may be empty if no additional details are available, or the last sniff call returned true.

This only contains details that were discovered before sniff returned false, it is not an exhaustive list of issues which, if resolved, would cause the file to be successfully sniffed.

public void init(ExtractorOutput output)

Initializes the extractor with an ExtractorOutput. Called at most once.

public static ExtractorsFactory newFactory(SubtitleParser.Factory subtitleParserFactory)

Creates a factory for FragmentedMp4Extractor instances with the provided SubtitleParser.Factory.

public int read(ExtractorInput input, PositionHolder seekPosition)

Extracts data read from a provided ExtractorInput. Must not be called before init.

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, RESULT_CONTINUE is returned to indicate that the 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 RESULT_SEEK is returned. If the extractor reached the end of the data provided by the ExtractorInput, then RESULT_END_OF_INPUT is returned.

When this method throws an IOException, extraction may continue by providing an ExtractorInput with an unchanged read position to a subsequent call to this method.

public void release()

Releases all kept resources.

public void seek(long position, long timeUs)

Notifies the extractor that a seek has occurred.

Following a call to this method, the ExtractorInput passed to the next invocation of read 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 SeekMap passed to the ExtractorOutput.

public boolean sniff(ExtractorInput input)

Returns whether this extractor can extract samples from the 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.