Package com.esprit.utils

Class DemoVideoGenerator

java.lang.Object

com.esprit.utils.DemoVideoGenerator

public class DemoVideoGenerator
extends Object

Utility class for generating demo videos for Product Hunt presentation Uses FFmpeg through JavaCV for professional video creation

Field Summary

Fields

Modifier and Type	Field	Description
private static final double	FRAME_RATE
private static final org.slf4j.Logger	log
private static final DateTimeFormatter	TIMESTAMP_FORMATTER
private static final String	TIMESTAMP_PATTERN
private static final int	VIDEO_BITRATE
private static final int	VIDEO_HEIGHT
private static final int	VIDEO_WIDTH
private static final String	VIDEOS_DIR

Constructor Summary

Constructors

Constructor	Description
DemoVideoGenerator()

Method Summary

Modifier and Type	Method	Description
static Path	createScreenRecording(int durationSeconds, String outputFilename)	Create a screen recording using FFmpeg (requires external FFmpeg installation)
static Path	createVideoFromScreenshots(Path[] screenshotPaths, String outputFilename, double durationPerImage)	Create a demo video from a series of screenshots
private static void	createVideosDirectory()	Create videos directory if it doesn't exist
static Path	generateCompleteDemo()	Generate a complete demo video workflow This combines multiple screenshots into a professional demo video
static Path	getVideosDirectory()	Get the videos directory path
private static BufferedImage	resizeImage(BufferedImage original, int targetWidth, int targetHeight)	Resize image to fit video dimensions while maintaining aspect ratio

Methods inherited from class java.lang.Object

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

Field Details

log

private static final org.slf4j.Logger log

VIDEOS_DIR

private static final String VIDEOS_DIR

See Also:

• Constant Field Values

TIMESTAMP_PATTERN

private static final String TIMESTAMP_PATTERN

See Also:

• Constant Field Values

TIMESTAMP_FORMATTER

private static final DateTimeFormatter TIMESTAMP_FORMATTER

VIDEO_WIDTH

private static final int VIDEO_WIDTH

See Also:

• Constant Field Values

VIDEO_HEIGHT

private static final int VIDEO_HEIGHT

See Also:

• Constant Field Values

FRAME_RATE

private static final double FRAME_RATE

See Also:

• Constant Field Values

VIDEO_BITRATE

private static final int VIDEO_BITRATE

See Also:

• Constant Field Values

Constructor Details

DemoVideoGenerator

public DemoVideoGenerator()

Method Details

createVideosDirectory

private static void createVideosDirectory()

Create videos directory if it doesn't exist

createVideoFromScreenshots

public static Path createVideoFromScreenshots(Path[] screenshotPaths,
 String outputFilename,
 double durationPerImage)

Create a demo video from a series of screenshots

Parameters:

screenshotPaths - Array of screenshot file paths

outputFilename - Output video filename (without extension)

durationPerImage - Duration in seconds for each image

Returns:

Path to the generated video file

createScreenRecording

public static Path createScreenRecording(int durationSeconds,
 String outputFilename)

Create a screen recording using FFmpeg (requires external FFmpeg installation)

Parameters:

durationSeconds - Duration of recording in seconds

outputFilename - Output filename (without extension)

Returns:

Path to the generated video file or null if failed

resizeImage

private static BufferedImage resizeImage(BufferedImage original,
 int targetWidth,
 int targetHeight)

Resize image to fit video dimensions while maintaining aspect ratio

generateCompleteDemo

public static Path generateCompleteDemo()

Generate a complete demo video workflow This combines multiple screenshots into a professional demo video

getVideosDirectory

public static Path getVideosDirectory()

Get the videos directory path