com.otaliastudios.transcoder.strategy

Class DefaultVideoStrategy

java.lang.Object

com.otaliastudios.transcoder.strategy.DefaultVideoStrategy

All Implemented Interfaces:

TrackStrategy

public class DefaultVideoStrategy
extends java.lang.Object
implements TrackStrategy

An TrackStrategy for video that converts it AVC with the given size. The input and output aspect ratio must match.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DefaultVideoStrategy.Builder
static class	DefaultVideoStrategy.Options Holds configuration values.

Field Summary

Fields

Modifier and Type	Field and Description
static long	BITRATE_UNKNOWN
static int	DEFAULT_FRAME_RATE
static float	DEFAULT_KEY_FRAME_INTERVAL

Constructor Summary

Constructors

Constructor and Description
DefaultVideoStrategy(DefaultVideoStrategy.Options options)

Method Summary

Modifier and Type	Method and Description
static DefaultVideoStrategy.Builder	aspectRatio(float aspectRatio) Creates a new DefaultVideoStrategy.Builder with a AspectRatioResizer using given aspect ratio value.
static DefaultVideoStrategy.Builder	atMost(int atMostSize) Creates a new DefaultVideoStrategy.Builder with an AtMostResizer using given constraint.
static DefaultVideoStrategy.Builder	atMost(int atMostMinor, int atMostMajor) Creates a new DefaultVideoStrategy.Builder with an AtMostResizer using given constraints.
TrackStatus	createOutputFormat(java.util.List<android.media.MediaFormat> inputFormats, android.media.MediaFormat outputFormat) Create the output format for this track (either audio or video).
static DefaultVideoStrategy.Builder	exact(int firstSize, int secondSize) Creates a new DefaultVideoStrategy.Builder with an ExactResizer using given dimensions.
static DefaultVideoStrategy.Builder	fraction(float fraction) Creates a new DefaultVideoStrategy.Builder with a FractionResizer using given downscale fraction.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

BITRATE_UNKNOWN

public static final long BITRATE_UNKNOWN

See Also:

Constant Field Values

DEFAULT_KEY_FRAME_INTERVAL

public static final float DEFAULT_KEY_FRAME_INTERVAL

See Also:

Constant Field Values

DEFAULT_FRAME_RATE

public static final int DEFAULT_FRAME_RATE

See Also:

Constant Field Values

Constructor Detail

DefaultVideoStrategy

public DefaultVideoStrategy(@NonNull
                            DefaultVideoStrategy.Options options)

Method Detail

exact

@NonNull
public static DefaultVideoStrategy.Builder exact(int firstSize,
                                                          int secondSize)

Creates a new DefaultVideoStrategy.Builder with an ExactResizer using given dimensions.

Parameters:

firstSize - the exact first size

secondSize - the exact second size

Returns:

a strategy builder

fraction

@NonNull
public static DefaultVideoStrategy.Builder fraction(float fraction)

Creates a new DefaultVideoStrategy.Builder with a FractionResizer using given downscale fraction.

Parameters:

fraction - the downscale fraction

Returns:

a strategy builder

aspectRatio

@NonNull
public static DefaultVideoStrategy.Builder aspectRatio(float aspectRatio)

Creates a new DefaultVideoStrategy.Builder with a AspectRatioResizer using given aspect ratio value.

Parameters:

aspectRatio - the desired aspect ratio

Returns:

a strategy builder

atMost

@NonNull
public static DefaultVideoStrategy.Builder atMost(int atMostSize)

Creates a new DefaultVideoStrategy.Builder with an AtMostResizer using given constraint.

Parameters:

atMostSize - size constraint

Returns:

a strategy builder

atMost

@NonNull
public static DefaultVideoStrategy.Builder atMost(int atMostMinor,
                                                           int atMostMajor)

Creates a new DefaultVideoStrategy.Builder with an AtMostResizer using given constraints.

Parameters:

atMostMajor - constraint for the major dimension

atMostMinor - constraint for the minor dimension

Returns:

a strategy builder

createOutputFormat

@NonNull
public TrackStatus createOutputFormat(@NonNull
                                               java.util.List<android.media.MediaFormat> inputFormats,
                                               @NonNull
                                               android.media.MediaFormat outputFormat)

Description copied from interface: TrackStrategy

Create the output format for this track (either audio or video). Implementors should fill the outputFormat object and return a non-null TrackStatus: - TrackStatus.COMPRESSING: we want to compress this track. Output format will be used - TrackStatus.PASS_THROUGH: we want to use the input format. Output format will be ignored - TrackStatus.REMOVING: we want to remove this track. Output format will be ignored Subclasses can also throw to abort the whole transcoding operation.

Specified by:

createOutputFormat in interface TrackStrategy

Parameters:

inputFormats - the input formats

outputFormat - the output format to be filled

Returns:

the track status