Video Preview

Make sprite sheets or gif previews of your videos using Node.js

The module creates two types of previews:

Horizontal or vertical sprite sheet for css animation-timing-function: steps(10, end)
Animated gif image

API

await VideoPreview(input_file, output_file, total_frames[, options])

input_file

Type: String
Full path to source video file.

output_file

Type: String
Full path to preview file. Pay special attention to the file extension, it is here that the type of preview to be made is determined!

total_frames

Type: Number
The amount of frames in a preview file. If = 1, then would be taken frame from duration / 2 position

options.temp_dir

Type: String
Default: {INPUT FILE PATH}/temp_{UNIQ ID}/
Temporary folder for storing video frames

options.video_length

Type: Number
Default: true
If not set, then video-length module would be used to get actual video length. video-length module requires MediaInfo binary!

options.frames_format

Type: String
Default: jpg
png gives maximum quality, but jpg is faster

options.width

Type: Number | String
Output image width. Read this article for more info

options.height

Type: Number | String
Output image height. Read this article for more info

options.quality

Type: Number
Default: 75
For now it works only for gif output format

options.direction

Type: String
Default: v
Frames direction for jpg or png sprite sheets

Key	Value
v	vertical direction
h	horizontal direction

options.fps

Type: Number
Default: 1
Gif frame rate

options.loop

Type: Boolean
Default: true
Loop gif

options.ffmpeg_bin

Type: String
Default: ffmpeg
FFmpeg binary

options.mediainfo_bin

Type: String
Default: MediaInfo
MediaInfo binary

options.convert_bin

Type: String
Default: convert
Convert binary

options.gifski_bin

Type: String
Default: gifski
Gifski binary

options.cleanup

Type: Boolean
Default: false
Remove extracted frames from temp_dir at the end

options.silent

Type: Boolean
Default: true
Enables logging stdout / stderr data

@output

Type: Object

{
   file: 'z:/preview.gif'
}

Usage

const VideoPreview = require('video-preview');

let frames = 10;
let input_file = './videos/MONICA BELLUCCI in the Matrix Sequels (HD Movie Scenes).mp4';
let output_file = './videos/preview.gif';

VideoPreview(input_file, output_file, frames, { 

   width: 320,
   quality: 50,
   fps: 1,
   
   cleanup: true,

}).then(result => {
   console.log(result);
}).catch(err => {
   console.log(err);
})

walker-design/video-preview