MediaMuxerCompat

public static final int OUTPUT_FORMAT_MP4 = 0

The MP4 file format.

public MediaMuxerCompat(
    FileDescriptor fileDescriptor,
    @MediaMuxerCompat.OutputFormat int outputFormat
)

Creates an instance.

It is the caller's responsibility to close the fileDescriptor, which is safe to do so as soon as this call returns.

public MediaMuxerCompat(
    String filePath,
    @MediaMuxerCompat.OutputFormat int outputFormat
)

Creates an instance.

public int addTrack(MediaFormat format)

Adds a track of the given media format.

All tracks must be added before any samples are written to any track.

KEY_CAPTURE_RATE is used to write KEY_ANDROID_CAPTURE_FPS metadata in the MP4 file.

public void release()

Releases the underlying resources.

It should be called after stop.

public void setLocation(
    @FloatRange(from = "-90.0", to = 90.0) float latitude,
    @FloatRange(from = "-180.0", to = 180.0) float longitude
)

Sets the location of the media file.

It must be called before start.

public void setOrientationHint(int degrees)

Sets the orientation hint for the media file.

It must be called before start.

public void start()

Starts the muxer.

This must be called after addTrack and before writeSampleData.

public void stop()

Stops the muxer.

Once the muxer is stopped, it can not be restarted.

public void writeSampleData(
    int trackIndex,
    ByteBuffer byteBuffer,
    MediaCodec.BufferInfo bufferInfo
)

Writes encoded sample data.

To set the duration of the last sample in a track, an additional empty buffer ( bufferInfo.size = 0) with BUFFER_FLAG_END_OF_STREAM flag and a suitable presentation timestamp must be passed as the last sample of that track. This timestamp should be the sum of the desired duration and the presentation timestamp of the original last sample. If no explicit END_OF_STREAM sample is provided, the last sample's duration will be equal to the previous sample's duration.