FragmentedMp4Muxer

@UnstableApi
class FragmentedMp4Muxer : Muxer

A muxer for creating a fragmented MP4 file.

Muxer supports muxing of:

• Video Codecs:
  • AV1
  • MPEG-4
  • H.263
  • H.264 (AVC)
  • H.265 (HEVC)
  • VP9
  • APV
  • Dolby Vision
• Audio Codecs:
  • AAC
  • AMR-NB (Narrowband AMR)
  • AMR-WB (Wideband AMR)
  • Opus
  • Vorbis
  • Raw Audio
• Metadata

All the operations are performed on the caller thread.

To create a fragmented MP4 file, the caller must:

• Add tracks using addTrack which will return a track id.
• Use the associated track id when writing samples for that track.
• close the muxer when all data has been written.

Some key points:

• All tracks must be added before writing any samples.
• The caller is responsible for ensuring that samples of different track types are well interleaved by calling writeSampleData in an order that interleaves samples from different tracks.

Summary

const val DEFAULT_FRAGMENT_DURATION_MS = 2000: Long

const val SUPPORTED_AUDIO_SAMPLE_MIME_TYPES: ImmutableList<String!>!

const val SUPPORTED_VIDEO_SAMPLE_MIME_TYPES: ImmutableList<String!>!

fun addMetadataEntry(metadataEntry: Metadata.Entry!): Unit

fun addTrack(format: Format!): Int

fun close(): Unit

fun writeSampleData(
    trackId: Int,
    byteBuffer: ByteBuffer!,
    bufferInfo: BufferInfo!
): Unit