Package dev.matrixlab.webp4j.animation

Class AnimatedWebPEncoder

java.lang.Object

dev.matrixlab.webp4j.animation.AnimatedWebPEncoder

public final class AnimatedWebPEncoder
extends Object

Encoder for creating animated WebP images from BufferedImage frames.

This class provides methods to create animated WebP images directly from Java BufferedImage objects without requiring an intermediate GIF file.

Author:

MrNanko

Method Summary

Modifier and Type	Method	Description
static byte[]	encode(List<BufferedImage> frames, int[] delays, GifToWebPConfig config)	Creates an animated WebP from a list of BufferedImage frames.
static byte[]	encode(List<BufferedImage> frames, int delay, GifToWebPConfig config)	Creates an animated WebP with uniform delay for all frames.

Methods inherited from class java.lang.Object

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

Method Details

encode

public static byte[] encode(List<BufferedImage> frames,
 int[] delays,
 GifToWebPConfig config)
                     throws IOException

Creates an animated WebP from a list of BufferedImage frames.

Example usage:

 List<BufferedImage> frames = Arrays.asList(frame1, frame2, frame3);
 int[] delays = {100, 100, 100};  // milliseconds per frame
 GifToWebPConfig config = GifToWebPConfig.createLosslessConfig();
 byte[] webp = AnimatedWebPEncoder.encode(frames, delays, config);
 

Parameters:

frames - List of BufferedImage frames (must not be empty)

delays - Array of frame delays in milliseconds (must match frame count)

config - Configuration for encoding (quality, compression, etc.)

Returns:

Byte array containing the animated WebP data

Throws:

IOException - If encoding fails

IllegalArgumentException - If frames is empty or delays length doesn't match

encode

public static byte[] encode(List<BufferedImage> frames,
 int delay,
 GifToWebPConfig config)
                     throws IOException

Creates an animated WebP with uniform delay for all frames.

This is a convenience method when all frames have the same delay.

Parameters:

frames - List of BufferedImage frames (must not be empty)

delay - Delay in milliseconds for each frame

config - Configuration for encoding (quality, compression, etc.)

Returns:

Byte array containing the animated WebP data

Throws:

IOException - If encoding fails

IllegalArgumentException - If frames is empty