shotstack-sdk

v0.2.9

Published

5 months ago

Official Node SDK for the Shotstack Cloud Video Editing API

Downloads

3,302

0High
0Medium
0Low

john.shotstack

dazer

jeff-shotstack

video ffmpeg video-editing video-editor video-api cloud-video video-processing

Shotstack NodeJS SDK

Node SDK for Shotstack, the cloud video editing API.

Shotstack is a cloud based video editing platform that enables the editing of videos using code.

The platform uses an API and a JSON format for specifying how videos should be edited and what assets and titles should be used.

A server based render farm takes care of rendering the videos allowing multiple videos to be created simultaneously.

For examples of how to use the SDK to create videos using code checkout the Node demo repo: https://github.com/shotstack/node-demos

Using the Node SDK

Installation

npm install shotstack-sdk

Video Editing

The Shotstack SDK enables programmatic video editing via the Edit API render endpoint. Prepare JSON edits using the provided schema classes and POST to the API for rendering.

Video Editing Example

The example below trims the start of a video clip and plays it for 8 seconds. The edit is prepared using the SDK models and then sent to the API for rendering.

const Shotstack = require('shotstack-sdk');

const defaultClient = Shotstack.ApiClient.instance;
defaultClient.basePath = 'https://api.shotstack.io/stage';

const DeveloperKey = defaultClient.authentications['DeveloperKey'];
DeveloperKey.apiKey = 'H7jKyj90kd09lbLOF7J900jNbSWS67X87xs9j0cD'; // use the correct API key

const api = new Shotstack.EditApi();

let videoAsset = new Shotstack.VideoAsset;
videoAsset
    .setSrc('https://s3-ap-southeast-2.amazonaws.com/shotstack-assets/footage/skater.hd.mp4')
    .setTrim(3)

let videoClip = new Shotstack.Clip;
videoClip
    .setAsset(videoAsset)
    .setStart(0)
    .setLength(8);

let track = new Shotstack.Track;
track.setClips([videoClip]);

let timeline = new Shotstack.Timeline;
timeline.setTracks([track]);

let output = new Shotstack.Output;
output
    .setFormat('mp4')
    .setResolution('sd');

let edit = new Shotstack.Edit;
edit
    .setTimeline(timeline)
    .setOutput(output);

api.postRender(edit).then((data) => {
    console.log(data.response.id);
});

Status Check Example

The example request below can be called a few seconds after the render above is posted. It will return the status of the render, which can take several seconds to process.

const Shotstack = require('shotstack-sdk');

const defaultClient = Shotstack.ApiClient.instance;
defaultClient.basePath = 'https://api.shotstack.io/stage';

const DeveloperKey = defaultClient.authentications['DeveloperKey'];
DeveloperKey.apiKey = 'H7jKyj90kd09lbLOF7J900jNbSWS67X87xs9j0cD'; // use the correct API key

const api = new Shotstack.EditApi();

const id = '75143ec6-4b72-46f8-a67a-fd7284546935'; // use the render id from previous example

api.getRender(id, { data: false, merged: true }).then((data) => {
    if (data.response.status === 'done') {
        console.log(data.response.url);
    }
});

Save a Template Example

The example below uses the Edit we create in the Video Editing Example and saves it as a template. The template can be rendered at a later date and can include placeholders. Placeholders can be replaced when rendered using merge fields.

This example uses a placeholder for the video src (URL), trim (TRIM), and length (LENGTH) to allow you to trim any video using a template.

const Shotstack = require('shotstack-sdk');

const defaultClient = Shotstack.ApiClient.instance;
defaultClient.basePath = 'https://api.shotstack.io/stage';

const DeveloperKey = defaultClient.authentications['DeveloperKey'];
DeveloperKey.apiKey = 'H7jKyj90kd09lbLOF7J900jNbSWS67X87xs9j0cD'; // use the correct API key

const api = new Shotstack.EditApi();

let videoAsset = new Shotstack.VideoAsset;
videoAsset
    .setSrc('{{ URL }}')
    .setTrim('{{ TRIM }}');

let videoClip = new Shotstack.Clip;
videoClip
    .setAsset(videoAsset)
    .setStart(0)
    .setLength('{{ LENGTH }}');

let track = new Shotstack.Track;
track.setClips([videoClip]);

let timeline = new Shotstack.Timeline;
timeline.setTracks([track]);

let output = new Shotstack.Output;
output
    .setFormat('mp4')
    .setResolution('sd');

let edit = new Shotstack.Edit;
edit
    .setTimeline(timeline)
    .setOutput(output);

const template = new Shotstack.Template;
template
    .setName('Trim Template')
    .setTemplate(edit);

api.postTemplate(template).then((data) => {
    console.log(data.response.id);
});

Render a Template Example

The example below renders the template we created in the previous example and includes merge fields that will replace the placeholders. Once submitted use the returned render ID and call the Status Check Example to get the render progress.

const Shotstack = require('shotstack-sdk');

const defaultClient = Shotstack.ApiClient.instance;
defaultClient.basePath = 'https://api.shotstack.io/stage';

const DeveloperKey = defaultClient.authentications['DeveloperKey'];
DeveloperKey.apiKey = 'H7jKyj90kd09lbLOF7J900jNbSWS67X87xs9j0cD'; // use the correct API key

const api = new Shotstack.EditApi();

const id = '8aeabb0e-b5eb-8c5e-847d-82297dd4802a'; // use the template id from previous example

const mergeFieldUrl = new Shotstack.MergeField;
mergeFieldUrl
    .setFind('URL')
    .setReplace('https://s3-ap-southeast-2.amazonaws.com/shotstack-assets/footage/skater.hd.mp4');

const mergeFieldTrim = new Shotstack.MergeField;
mergeFieldTrim
    .setFind('TRIM')
    .setReplace(3);

const mergeFieldLength = new Shotstack.MergeField;
mergeFieldLength
    .setFind('LENGTH')
    .setReplace(6);

const template = new Shotstack.TemplateRender;
template
    .setId(id)
    .setMerge([
        mergeFieldUrl,
        mergeFieldTrim,
        mergeFieldLength,
    ]);

api.postTemplateRender(template).then((data) => {
    console.log(data.response.id);
});

Video Editing Schemas

The following schemas are used to prepare a video edit.

Edit

An Edit defines the arrangement of a video on a timeline, an audio edit or an image design and the output format.

Example:

const Shotstack = require('shotstack-sdk');

const edit = new Shotstack.Edit;
edit
  .setTimeline(timeline)
  .setOutput(output)
  .setMerge(merge)
  .setCallback('https://my-server.com/callback.php')
  .setDisk("local");

Methods:

Method | Description | Required :--- | :--- | :---: setTimeline(Shotstack.Timeline) | A timeline represents the contents of a video edit over time, an audio edit over time, in seconds, or an image layout. A timeline consists of layers called tracks. Tracks are composed of titles, images, audio, html or video segments referred to as clips which are placed along the track at specific starting point and lasting for a specific amount of time. | - setOutput(Shotstack.Output) | The output format, render range and type of media to generate. | Y setMerge(Shotstack.MergeField[] mergeField) | An array of key/value pairs that provides an easy way to create templates with placeholders. The placeholders can be used to find and replace keys with values. For example you can search for the placeholder {{NAME}} and replace it with the value Jane. | - setCallback(string callback) | An optional webhook callback URL used to receive status notifications when a render completes or fails. See webhooks for more details. | - setDisk(string disk) | (Deprecated) The disk type to use for storing footage and assets for each render. See disk types for more details. [default to local] local - optimized for high speed rendering with up to 512MB storagemount - optimized for larger file sizes and longer videos with 5GB for source footage and 512MB for output render | -

Timeline

A Timeline represents the contents of a video edit over time, an audio edit over time, in seconds, or an image layout. A timeline consists of layers called tracks. Tracks are composed of titles, images, audio, html or video segments referred to as clips which are placed along the track at specific starting point and lasting for a specific amount of time.

Example:

const Shotstack = require('shotstack-sdk');

const timeline = new Shotstack.Timeline;
timeline
  .setSoundtrack(soundtrack)
  .setBackground('#000000')
  .setFonts(fonts)
  .setTracks(tracks)
  .setCache(true);

Methods:

Method | Description | Required :--- | :--- | :---: setSoundtrack(Shotstack.Soundtrack soundtrack) | A music or audio soundtrack file in mp3 format. | - setBackground(string background) | A hexadecimal value for the timeline background colour. Defaults to #000000 (black). | - setFonts(Shotstack.Font[] fonts) | An array of custom fonts to be downloaded for use by the HTML assets. | - setTracks(Shotstack.Track[] tracks) | A timeline consists of an array of tracks, each track containing clips. Tracks are layered on top of each other in the same order they are added to the array with the top most track layered over the top of those below it. Ensure that a track containing titles is the top most track so that it is displayed above videos and images. | Y setCache(bool cache) | Disable the caching of ingested source footage and assets. See caching for more details. [default to true] | -

Soundtrack

A music or audio file in mp3 format that plays for the duration of the rendered video or the length of the audio file, which ever is shortest.

Example:

const Shotstack = require('shotstack-sdk');

const soundtrack = new Shotstack.Soundtrack;
soundtrack
  .setSrc('https://s3-ap-southeast-2.amazonaws.com/shotstack-assets/music/disco.mp3')
  .setEffect('fadeIn')
  .setVolume(1);

Methods:

Font

Download a custom font to use with the HTML asset type, using the font name in the CSS or font tag. See our custom fonts getting started guide for more details.

Example:

const Shotstack = require('shotstack-sdk');

const font = new Shotstack.Font;
font
  .setSrc('https://shotstack-assets.s3-ap-southeast-2.amazonaws.com/fonts/OpenSans-Regular.ttf');

Methods:

Track

A track contains an array of clips. Tracks are layered on top of each other in the order in the array. The top most track will render on top of those below it.

Example:

const Shotstack = require('shotstack-sdk');

const track = new Shotstack.Track;
track
  .setClips(clips);

Methods:

Clip

A Clip is a container for a specific type of asset, i.e. a title, image, video, audio or html. You use a Clip to define when an asset will display on the timeline, how long it will play for and transitions, filters and effects to apply to it.

Example:

const Shotstack = require('shotstack-sdk');

clip = new Shotstack.Clip;
clip
  .setAsset(asset)
  .setStart(2)
  .setLength(5)
  .setFit('crop')
  .setScale(0)
  .setPosition('center')
  .setOffset(offset)
  .setTransition(transition)
  .setEffect('zoomIn')
  .setFilter('greyscale')
  .setOpacity(1)
  .setTransform(transform);

Methods:

Method | Description | Required :--- | :--- | :---: setAsset(asset) | The type of asset to display for the duration of this Clip. Value must be one of: Shotstack.VideoAsset Shotstack.ImageAsset Shotstack.TitleAsset Shotstack.HtmlAsset Shotstack.AudioAsset Shotstack.LumaAsset | Y setStart(float start) | The start position of the Clip on the timeline, in seconds. | Y setLength(float length) | The length, in seconds, the Clip should play for. | Y setFit(string fit) | Set how the asset should be scaled to fit the viewport using one of the following options [default to crop]: cover - stretch the asset to fill the viewport without maintaining the aspect ratio.contain - fit the entire asset within the viewport while maintaining the original aspect ratio.crop - scale the asset to fill the viewport while maintaining the aspect ratio. The asset will be cropped if it exceeds the bounds of the viewport.none - preserves the original asset dimensions and does not apply any scaling.| - setScale(float scale) | Scale the asset to a fraction of the viewport size - i.e. setting the scale to 0.5 will scale asset to half the size of the viewport. This is useful for picture-in-picture video and scaling images such as logos and watermarks. | - setPosition(string position) | Place the asset in one of nine predefined positions of the viewport. This is most effective for when the asset is scaled and you want to position the element to a specific position [default to center].top - top (center)topRight - top rightright - right (center)bottomRight - bottom rightbottom - bottom (center)bottomLeft - bottom leftleft - left (center)topLeft - top leftcenter - center | - setOffset(Shotstack.Offset offset) | Offset the location of the asset relative to its position on the viewport. The offset distance is relative to the width of the viewport - for example an x offset of 0.5 will move the asset half the viewport width to the right. | - setTransition(Shotstack.Transition transition) | In and out transitions for a clip - i.e. fade in and fade out | - setEffect(string effect) | A motion effect to apply to the Clip. zoomIn - slow zoom inzoomOut - slow zoom outslideLeft - slow slide (pan) leftslideRight - slow slide (pan) rightslideUp - slow slide (pan) upslideDown - slow slide (pan) down The motion effect speed can also be controlled by appending Fast or Slow to the effect, e.g. zoomInFast or slideRightSlow.| - setFilter(string filter) | A filter effect to apply to the Clip. boost - boost contrast and saturationcontrast - increase contrastdarken - darken the scenegreyscale - remove colourlighten - lighten the scenemuted - reduce saturation and contrastnegative - invert colors | - setOpacity(float opacity) | Sets the opacity of the Clip where 1 is opaque and 0 is transparent. [default to 1] | - setTransform(Shotstack.Transformation transformation) | A transformation lets you modify the visual properties of a clip. Available transformations are Shotstack.RotateTransformation, Shotstack.SkewTransformation and Shotstack.FlipTransformation. Transformations can be combined to create interesting new shapes and effects. | -

VideoAsset

The VideoAsset is used to create video sequences from video files. The src must be a publicly accessible URL to a video resource such as an mp4 file.

Example:

const Shotstack = require('shotstack-sdk');

const videoAsset = new Shotstack.VideoAsset;
videoAsset
  .setSrc('https://shotstack-assets.s3.aws.com/mountain.mp4')
  .setTrim(5)
  .setVolume(0.5)
  .setVolumeEffect('fadeIn')
  .setCrop(crop);

Methods:

Method | Description | Required :--- | :--- | :---: setSrc(string url) | The video source URL. The URL must be publicly accessible or include credentials. | Y setTrim(float seconds) | The start trim point of the video clip, in seconds (defaults to 0). Videos will start from the in trim point. The video will play until the file ends or the Clip length is reached. | - setVolume(float level) | Set the volume for the video clip between 0 and 1 where 0 is muted and 1 is full volume (defaults to 0). | - setVolumeEffect(string effect) | The volume effect to apply to the video asset.fadeIn - fade volume in onlyfadeOut - fade volume out onlyfadeInFadeOut - fade volume in and out | - setCrop(Shotstack.Crop crop) | Crop the sides of an asset by a relative amount. The size of the crop is specified using a scale between 0 and 1, relative to the screen width - i.e. a left crop of 0.5 will crop half of the asset from the left, a top crop of 0.25 will crop the top by quarter of the asset. | -

ImageAsset

The ImageAsset is used to create video from images to compose an image. The src must be a publicly accessible URL to an image resource such as a jpg or png file.

Example:

const Shotstack = require('shotstack-sdk');

const imageAsset = new Shotstack.ImageAsset;
imageAsset
  .setSrc('https://shotstack-assets.s3-ap-southeast-2.amazonaws.com/images/earth.jpg')
  .setCrop(crop);

Methods:

Method | Description | Required :--- | :--- | :---: setSrc(string url) | The image source URL. The URL must be publicly accessible or include credentials. | Y setCrop(Shotstack.Crop crop) | Crop the sides of an asset by a relative amount. The size of the crop is specified using a scale between 0 and 1, relative to the screen width - i.e. a left crop of 0.5 will crop half of the asset from the left, a top crop of 0.25 will crop the top by quarter of the asset. | -

TitleAsset

The TitleAsset clip type lets you create video titles from a text string and apply styling and positioning.

Example:

const Shotstack = require('shotstack-sdk');

const titleAsset = new Shotstack.TitleAsset;
titleAsset
  .setText('My Title')
  .setStyle('minimal')
  .setColor('#ffffff')
  .setSize('medium')
  .setBackground('#000000')
  .setPosition('center')
  .setOffset(offset);

Methods:

Method | Description | Required :--- | :--- | :---: setText(string text) | The title text string. | Y setStyle(string style) | Uses a preset to apply font properties and styling to the title. minimalblockbustervoguesketchyskinnychunkchunkLightmarkerfuturesubtitle | - setColor(string color) | Set the text color using hexadecimal color notation. Transparency is supported by setting the first two characters of the hex string (opposite to HTML), i.e. #80ffffff will be white with 50% transparency [default to #ffffff]. | - setSize(string zize) | Set the relative size of the text using predefined sizes from xx-small to xx-large [default to 'medium']. xx-smallx-smallsmallmediumlargex-largexx-large | - setBackground(string background) | Apply a background color behind the text. Set the text color using hexadecimal color notation. Transparency is supported by setting the first two characters of the hex string (opposite to HTML), i.e. #80ffffff will be white with 50% transparency. Omit to use transparent background. | - setPosition(string position) | Place the title in one of nine predefined positions of the viewport [default to center. top - top (center)topRight - top rightright - right (center)bottomRight - bottom rightbottom - bottom (center)bottomLeft - bottom leftleft - left (center)topLeft - top leftcenter - center | - setOffset(Shotstack.Offset offset) | Offset the location of the title relative to its position on the screen. | -

HtmlAsset

The HtmlAsset clip type lets you create text based layout and formatting using HTML and CSS. You can also set the height and width of a bounding box for the HTML content to sit within. Text and elements will wrap within the bounding box.

Example:

const Shotstack = require('shotstack-sdk');

const htmlAsset = new Shotstack.HtmlAsset;
htmlAsset
  .setHtml('<p>Hello <b>World</b></p>')
  .setCss('p { color: #ffffff; } b { color: #ffff00; }')
  .setWidth(400)
  .setHeight(200)
  .setBackground('transparent')
  .setPosition('center);

Methods:

Method | Description | Required :--- | :--- | :---: setHtml(string html) | The HTML text string. See list of supported HTML tags. | Y setCss(string css) | The CSS text string to apply styling to the HTML. See list of support CSS properties. | - setWidth(int width) | Set the width of the HTML asset bounding box in pixels. Text will wrap to fill the bounding box. | - setHeight(int height) | Set the height of the HTML asset bounding box in pixels. Text and elements will be masked if they exceed the height of the bounding box. | - setBackground(string background) | Apply a background color behind the HTML bounding box using. Set the text color using hexadecimal color notation. Transparency is supported by setting the first two characters of the hex string (opposite to HTML), i.e. #80ffffff will be white with 80% transparency [default to transparent]. | - setPosition(string position) | Place the HTML in one of nine predefined positions within the HTML area [default to center]. top - top (center)topRight - top rightright - right (center)bottomRight - bottom rightbottom - bottom (center)bottomLeft - bottom leftleft - left (center)topLeft - top leftcenter - center | -

AudioAsset

The AudioAsset is used to add sound effects and audio at specific intervals on the timeline. The src must be a publicly accessible URL to an audio resource such as an mp3 file.

Example:

const Shotstack = require('shotstack-sdk');

const audioAsset = new Shotstack.AudioAsset;
audioAsset
  .setSrc('https://shotstack-assets.s3-ap-southeast-2.amazonaws.com/music/unminus/lit.mp3')
  .setTrim(2)
  .setVolume(0.5)
  .setEffect('fadeInFadeOut');

Methods:

Method | Description | Required :--- | :--- | :---: setSrc(string url) | The audio source URL. The URL must be publicly accessible or include credentials. | Y setTrim(float seconds) | The start trim point of the audio clip, in seconds (defaults to 0). Audio will start from the trim point. The audio will play until the file ends or the Clip length is reached. | - setVolume(float level) | Set the volume for the audio clip between 0 and 1 where 0 is muted and 1 is full volume (defaults to 1). | - setEffect(string crop) | The effect to apply to the audio asset: fadeIn - fade volume in onlyfadeOut - fade volume out onlyfadeInFadeOut - fade volume in and out | -

LumaAsset

The LumaAsset is used to create luma matte masks, transitions and effects between other assets. A luma matte is a grey scale image or animated video where the black areas are transparent and the white areas solid. The luma matte animation should be provided as an mp4 video file. The src must be a publicly accessible URL to the file.

Example:

const Shotstack = require('shotstack-sdk');

const lumaAsset = new Shotstack.LumaAsset;
lumaAsset
  .setSrc('https://shotstack-assets.s3-ap-southeast-2.amazonaws.com/examples/luma-mattes/paint-left.mp4')
  .setTrim(5);

Methods:

Transition

The Transition clip type lets you define in and out transitions for a clip - i.e. fade in and fade out

Example:

const Shotstack = require('shotstack-sdk');

const transition = new Shotstack.Transition;
transition
  .setIn('fade')
  .setOut('fade');

Methods:

Method | Description | Required :--- | :--- | :---: setIn(string in) | The transition in. Available transitions are: fade - fade inreveal - reveal from left to rightwipeLeft - fade across screen to the leftwipeRight - fade across screen to the rightslideLeft - move slightly left and fade inslideRight - move slightly right and fade inslideUp - move slightly up and fade inslideDown - move slightly down and fade incarouselLeft - slide in from right to leftcarouselRight - slide in from left to rightcarouselUp - slide in from bottom to topcarouselDown - slide in from top to bottomshuffleTopRight - rotate in from top rightshuffleRightTop - rotate in from right topshuffleRightBottom - rotate in from right bottomshuffleBottomRight - rotate in from bottom rightshuffleBottomLeft - rotate in from bottom leftshuffleLeftBottom - rotate in from left bottomshuffleLeftTop - rotate in from left topshuffleTopLeft - rotate in from top leftzoom - fast zoom in The transition speed can also be controlled by appending Fast or Slow to the transition, e.g. fadeFast or CarouselLeftSlow. | - setOut(string out) | The transition out. Available transitions are: fade - fade outreveal - reveal from right to leftwipeLeft - fade across screen to the leftwipeRight - fade across screen to the rightslideLeft - move slightly left and fade outslideRight - move slightly right and fade outslideUp - move slightly up and fade outslideDown - move slightly down and fade outcarouselLeft - slide out from right to leftcarouselRight - slide out from left to rightcarouselUp - slide out from bottom to topcarouselDown - slide out from top to bottomshuffleTopRight - rotate out from top rightshuffleRightTop - rotate out from right topshuffleRightBottom - rotate out from right bottomshuffleBottomRight - rotate out from bottom rightshuffleBottomLeft - rotate out from bottom leftshuffleLeftBottom - rotate out from left bottomshuffleLeftTop - rotate out from left topshuffleTopLeft - rotate out from top leftzoom - fast zoom out The transition speed can also be controlled by appending Fast or Slow to the transition, e.g. fadeFast or CarouselLeftSlow. | -

Offset

Offsets the position of an asset horizontally or vertically by a relative distance.

Example:

const Shotstack = require('shotstack-sdk');

const offset = new Shotstack.Offset;
offset
  .setX(0.1)
  .setY(-0.2);

Methods:

Method | Description | Required :--- | :--- | :---: setX(float x) | Offset an asset on the horizontal axis (left or right), range varies from -10 to 10. Positive numbers move the asset right, negative left. For all assets except titles the distance moved is relative to the width of the viewport - i.e. an X offset of 0.5 will move the asset half the screen width to the right. [default to 0] | - setY(float y) | Offset an asset on the vertical axis (up or down), range varies from -10 to 10. Positive numbers move the asset up, negative down. For all assets except titles the distance moved is relative to the height of the viewport - i.e. an Y offset of 0.5 will move the asset up half the screen height. [default to 0] | -

Crop

Crop the sides of an asset by a relative amount. The size of the crop is specified using a scale between 0 and 1, relative to the screen width - i.e a left crop of 0.5 will crop half of the asset from the left, a top crop of 0.25 will crop the top by quarter of the asset.

Example:

const Shotstack = require('shotstack-sdk');

const crop = new Shotstack.Crop;
crop
  .setTop(0.15)
  .setBottom(0.15)
  .setLeft(0)
  .setRight(0);

Methods:

Transformation

Apply one or more transformations to a clip. Transformations alter the visual properties of a clip and can be combined to create new shapes and effects.

Example:

const Shotstack = require('shotstack-sdk');

const transformation = new Shotstack.Transformation;
transformation
  .setRotate(rotate)
  .setSkew(skew)
  .setFlip(flip);

Methods:

Method | Description | Required :--- | :--- | :---: setRotate(Shotstack.RotateTransformation rotate) | Rotate a clip by the specified angle in degrees. Rotation origin is set based on the clips position. | - setSkew(Shotstack.SkewTransformation skew) | Skew a clip so its edges are sheared at an angle. Use values between 0 and 3. Over 3 the clip will be skewed almost flat. | - setFlip(Shotstack.FlipTransformation flip) | Flip a clip vertically or horizontally. Acts as a mirror effect of the clip along the selected plane. | -

RotateTransformation

Rotate a clip by the specified angle in degrees. Rotation origin is set based on the clips position.

Example:

const Shotstack = require('shotstack-sdk');

const rotateTransformation = new Shotstack.RotateTransformation;
rotateTransformation
  .setAngle(45);

Methods:

SkewTransformation

Skew a clip so its edges are sheared at an angle. Use values between 0 and 3. Over 3 the clip will be skewed almost flat.

Example:

const Shotstack = require('shotstack-sdk');

const skewTransformation = new Shotstack.SkewTransformation;
skewTransformation
  .setX(0.5)
  .setY(0.5);

Methods:

FlipTransformation

Flip a clip vertically or horizontally. Acts as a mirror effect of the clip along the selected plane.

Example:

const Shotstack = require('shotstack-sdk');

const flipTransformation = new Shotstack.FlipTransformation;
flipTransformation
  .setHorizontal(true)
  .setVertical(true);

Methods:

MergeField

A merge field consists of a key; find, and a value; replace. Merge fields can be used to replace placeholders within the JSON edit to create re-usable templates. Placeholders should be a string with double brace delimiters, i.e. "{{NAME}}". A placeholder can be used for any value within the JSON edit.

Example:

const Shotstack = require('shotstack-sdk');

const mergeField = new Shotstack.MergeField;
mergeField
  .setFind('NAME')
  .setReplace('Jane');

Methods:

Template Schemas

The following schemas specify how to use templates to store and render templates. A template lets you save an Edit that can be rendered by its template ID and optionally include merge fields that are merged with the template when rendered.

Template

A template is a saved Edit than can be loaded and re-used.

Example:

const Shotstack = require('shotstack-sdk');

const template = new Shotstack.Template;
template
  .setName('My Template')
  .setTemplate(edit);

Methods:

TemplateRender

Configure the id and optional merge fields to render a template by id.

Example:

const Shotstack = require('shotstack-sdk');

const template = new Shotstack.TemplateRender;
template
  .setId('21e781c0-8232-4418-fec1-cc99f0280c21')
  .setMerge(merge);

Methods:

Method | Description | Required :--- | :--- | :---: setId(string id) | The id of the template to render in UUID format. | Y setMerge(Shotstack.MergeField[] mergeField) | An array of key/value pairs that provides an easy way to create templates with placeholders. The placeholders can be used to find and replace keys with values. For example you can search for the placeholder {{NAME}} and replace it with the value Jane. | -

Output Schemas

The following schemas specify the output format and settings.

Output

The output format, render range and type of media to generate.

Example:

const Shotstack = require('shotstack-sdk');

const output = new Shotstack.Output;
output
  .setFormat('mp4')
  .setResolution('sd')
  .setAspectRatio('16:9')
  .setSize(size)
  .setFps(25)
  .setScaleTo('preview')
  .setQuality('medium')
  .setRepeat(true)
  .setMute(false)
  .setRange(range)
  .setPoster(poster)
  .setThumbnail(thumbnail)
  .setDestinations(destinations);

Methods:

Method | Description | Required :--- | :--- | :---: setFormat(string format) | The output format and type of media file to generate. mp4 - mp4 video filegif - animated gifjpg - jpg image filepng - png image filebmp - bmp image filemp3 - mp3 audio file (audio only) | Y setResolution(string resolution) | The output resolution of the video or image. preview - 512px x 288px @ 15fpsmobile - 640px x 360px @ 25fpssd - 1024px x 576px @ 25fpshd - 1280px x 720px @ 25fps1080 - 1920px x 1080px @ 25fps | - setAspectRatio(string aspectRatio) | The aspect ratio (shape) of the video or image. Useful for social media output formats. Options are: 16:9 - regular landscape/horizontal aspect ratio (default)9:16 - vertical/portrait aspect ratio1:1 - square aspect ratio4:5 - short vertical/portrait aspect ratio4:3 - legacy TV aspect ratio | - setSize(Shotstack.Size size) | Set a custom size for a video or image. When using a custom size omit the resolution and aspectRatio. Custom sizes must be divisible by 2 based on the encoder specifications. | - setFps(float fps) | Override the default frames per second. Useful for when the source footage is recorded at 30fps, i.e. on mobile devices. Lower frame rates can be used to add cinematic quality (24fps) or to create smaller file size/faster render times or animated gifs (12 or 15fps). Default is 25fps. 12 - 12fps15 - 15fps23.976 - 23.976fps24 - 24fps25 - 25fps29.97 - 29.97fps30 - 30fps | - setScaleTo(string scaleTo) | Override the resolution and scale the video or image to render at a different size. When using scaleTo the asset should be edited at the resolution dimensions, i.e. use font sizes that look best at HD, then use scaleTo to output the file at SD and the text will be scaled to the correct size. This is useful if you want to create multiple asset sizes. preview - 512px x 288px @ 15fpsmobile - 640px x 360px @ 25fpssd - 1024px x 576px @25fpshd - 1280px x 720px @25fps1080 - 1920px x 1080px @25fps | - setQuality(string quality) | Adjust the output quality of the video, image or audio. Adjusting quality affects render speed, download speeds and storage requirements due to file size. The default medium provides the most optimized choice for all three factors. low - slightly reduced quality, smaller file sizemedium - optimized quality, render speeds and file sizehigh - slightly increased quality, larger file size | - setRepeat(bool repeat) | Loop settings for gif files. Set to true to loop, false to play only once. [default to true] | - setMute(bool mute) | Mute the audio track of the output video. Set to true to mute, false to un-mute. | - setRange(Shotstack.Range range) | Specify a time range to render, i.e. to render only a portion of a video or audio file. Omit this setting to export the entire video. Range can also be used to render a frame at a specific time point - setting a range and output format as jpg will output a single frame image at the range start point. | - setPoster(Shotstack.Poster poster) | Generate a poster image from a specific point on the timeline. | - setThumbnail(Shotstack.Thumbnail thumbnail) | Generate a thumbnail image from a specific point on the timeline. | - setDestinations(Destinations[] destinations) | A destination is a location where output files can be sent to for serving or hosting. By default all rendered assets are automatically sent to the Shotstack hosting destination. | -

Size

Set a custom size for a video or image. When using a custom size omit the resolution and aspectRatio. Custom sizes must be divisible by 2 based on the encoder specifications.

Example:

const Shotstack = require('shotstack-sdk');

const size = new Shotstack.Size;
size
  .setWidth(1200)
  .setHeight(800);

Methods:

Range

Specify a time range to render, i.e. to render only a portion of a video or audio file. Omit this setting to export the entire video. Range can also be used to render a frame at a specific time point - setting a range and output format as jpg will output a single frame image at the range start point.

Example:

const Shotstack = require('shotstack-sdk');

const range = new Shotstack.Range;
range
  .setStart(3)
  .setLength(6);

Methods:

Poster

Generate a Poster image for the video at a specific point from the timeline. The poster image size will match the size of the output video.

Example:

const Shotstack = require('shotstack-sdk');

const poster = new Shotstack.Poster;
poster
  .setCapture(1);

Methods:

Thumbnail

Generate a thumbnail image for the video or image at a specific point from the timeline.

Example:

const Shotstack = require('shotstack-sdk');

const thumbnail = new Shotstack.Thumbnail;
thumbnail
  .setCapture(1)
  .setScale(0.3);

Methods:

Destinations

ShotstackDestination

Send rendered assets to the Shotstack hosting and CDN service. This destination is enabled by default.

Example:

const Shotstack = require('shotstack-sdk');

const shotstackDestination = new Shotstack.ShotstackDestination;
shotstackDestination
  .setProvider('shotstack')
  .setExclude(false);

Methods:

MuxDestination

Send rendered videos to the Mux video hosting and streaming service. Mux credentials are required and added via the dashboard, not in the request.

Example:

const Shotstack = require('shotstack-sdk');

const muxDestination = new Shotstack.MuxDestination;
muxDestination
  .setProvider('mux')
  .setOptions(muxDestinationOptions);

Methods:

MuxDestinationOptions

Pass additional options to control how Mux processes video. Currently supports playback policy option.

Example:

const Shotstack = require('shotstack-sdk');

const muxDestinationOptions = new Shotstack.MuxDestinationOptions;
muxDestinationOptions
  .setPlaybackPolicy(['public']);

Methods:

S3Destination

Send rendered videos to an Amazon S3 bucket. Send files to any region with your own prefix and filename. AWS credentials are required and added via the dashboard, not in the request.

Example:

const Shotstack = require('shotstack-sdk');

const s3Destination = new Shotstack.S3Destination;
s3Destination
  .setProvider('s3')
  .setOptions(S3DestinationOptions);

Methods:

S3DestinationOptions

Pass additional options to control how files are stored in S3.

Example:

const Shotstack = require('shotstack-sdk');

const S3DestinationOptions = new Shotstack.S3DestinationOptions;
S3DestinationOptions
  .setRegion('us-east-1');
  .setBucket('my-bucket');
  .setPrefix('my-renders');
  .setFilename('my-file');
  .setAcl('public-read');

Methods:

Name | Description | Required :--- | :--- | :---: setRegion(string region) | Choose the region to send the file to. Must be a valid AWS region string like us-east-1 or ap-southeast-2 | Y setBucket(string bucket) | The bucket name to send files to. The bucket must exist in the AWS account before files can be sent. | Y setPrefix(string prefix) | A prefix for the file being sent. This is typically a folder name, i.e. videos or customerId/videos. | - setFilename(string filename) | Use your own filename instead of the default render ID filename. Note: omit the file extension as this will be appended depending on the output format. Also -poster.jpg and -thumb.jpg will be appended for poster and thumbnail images. | - setAcl(string acl) | Sets the S3 Access Control List (acl) permissions. Default is private. Must use a valid S3 Canned ACL. | -

Render Response Schemas

The following schemas are returned by the render request and status request.

QueuedResponse

The response received after a render request is submitted. The render task is queued for rendering and a unique render id is returned.

Methods:

QueuedResponseData

The QueuedResponseData is the response data returned with the QueuedResponse.

Methods:

RenderResponse

The RenderResponse is the response received after a render status request is submitted. The response includes details about status of a render and the output URL.

Methods:

RenderResponseData

The RenderResponseData is the response data returned with the RenderResponse request including status and URL.

Methods:

Method | Description | Required :--- | :--- | :---: getId(): string | The id of the render task in UUID format. | Y getOwner(): string | The owner id of the render task. | Y getPlan(): string | The customer subscription plan. | - getStatus(): string | The status of the render task. queued - render is queued waiting to be renderedfetching - assets are being fetchedrendering - the asset is being renderedsaving - the final asset is being saved to storagedone - the asset is ready to be downloadedfailed - there was an error rendering the asset | Y getError(): string | An error message, only displayed if an error occurred. | - getDuration(): float | The output video or audio length in seconds. | - getRender_time(): float | The time taken to render the asset in milliseconds. | - getUrl(): string | The URL of the final asset. This will only be available if status is done. This is a temporary URL and will be deleted after 24 hours. By default all assets are copied to the Shotstack hosting and CDN destination. | - getPoster(): string | The URL of the poster image if requested. This will only be available if status is done. | - getThumbnail(): string | The URL of the thumbnail image if requested. This will only be available if status is done. | - getData(): Shotstack.Edit | The timeline and output data to be rendered. | Y getCreated(): string | The time the render task was initially queued. | Y getUpdated(): string | The time the render status was last updated. | Y

Template Response Schemas

The following schemas are returned by the templates endpoint, including create, update and rendering a template.

TemplateResponse

The response received after a template is submitted. The template is saved and a unique template id is returned.

Methods:

TemplateResponseData

The response data returned with the Shotstack.TemplateResponse.

Methods:

TemplateDataResponse

The template data including the template name and Edit.

Methods:

TemplateDataResponseData

The response data returned with the TemplateDataResponse.

Methods:

TemplateListResponse

A list of previously saved templates.

Methods:

TemplateListResponseData

The response data returned with the TemplateListResponse.

Methods:

TemplateListResponseItem

The individual template item returned with the TemplateListResponseData templates list.

Methods:

Inspecting Media

The SDK probe endpoint can be used to inspect media hosted online. Simply pass the URL of an asset to inspect.

Probe Example

The example below inspects (probes) a video hosted on GitHub and returns metadata about the file.

const Shotstack = require('shotstack-sdk');

const defaultClient = Shotstack.ApiClient.instance;
defaultClient.basePath = 'https://api.shotstack.io/stage';

const DeveloperKey = defaultClient.authentications['DeveloperKey'];
DeveloperKey.apiKey = 'H7jKyj90kd09lbLOF7J900jNbSWS67X87xs9j0cD'; // use the correct API key

const api = new Shotstack.EditApi();

const url = 'https://github.com/shotstack/test-media/raw/main/captioning/scott-ko.mp4';

api.probe(url).then((data) => {
    data.response.metadata.streams.forEach(stream => {
        if (stream.codec_type === 'video') {
            console.log('Example settings for: ' + data.response.metadata.format.filename);
            console.log('Width: ' + stream.width + 'px');
            console.log('Height: ' + stream.height + 'px');
            console.log('Framerate: ' + stream.r_frame_rate + ' fps');
            console.log('Duration: ' + stream.duration + ' secs');
        }
    });
});

Probe Schemas

The following schemas are returned by the probe request.

ProbeResponse

The ProbeResponse is the response returned after a probe request is submitted. The probe requests returns data from FFprobe formatted as JSON.

Methods:

Managing Assets

By default, all assets generated by the editing API are hosted by Shotstack and served via our CDN. The SDK provides access to the Serve API to retrieve information about hosted files. Files can also be deleted.

Assets by Render ID Example

The example below uses a render ID to look up hosted assets associated with the render. Note that multiple assets can be created for a render, i.e. video, thumb and poster. Each asset has a unique asset ID different to the render ID.

const Shotstack = require('shotstack-sdk');

const defaultClient = Shotstack.ApiClient.instance;
defaultClient.basePath = 'https://api.shotstack.io/stage';

const DeveloperKey = defaultClient.authentications['DeveloperKey'];
DeveloperKey.apiKey = 'H7jKyj90kd09lbLOF7J900jNbSWS67X87xs9j0cD'; // use the correct API key

const api = new Shotstack.ServeApi();

const id = '140924c6-077d-4334-a89f-94befcfc0155'; // Use a valid render ID

api.getAssetByRenderId(id).then((assets) => {
    assets.data.forEach((asset) => {
        if (asset.attributes.status === 'ready') {
            console.log('>> Asset CDN URL: ' + asset.attributes.url);
            console.log('>> Asset ID: ' + asset.attributes.id);
            console.log('>> Render ID: ' + asset.attributes.renderId);
        }
    });
});

Assets by Asset ID Example

Every asset has a unique asset ID, the example below looks up an asset by its asset ID.

const Shotstack = require('shotstack-sdk');

const defaultClient = Shotstack.ApiClient.instance;
defaultClient.basePath = 'https://api.shotstack.io/stage';

const DeveloperKey = defaultClient.authentications['DeveloperKey'];
DeveloperKey.apiKey = 'H7jKyj90kd09lbLOF7J900jNbSWS67X87xs9j0cD'; // use the correct API key

const api = new Shotstack.ServeApi();

const id = 'ed43eae3-4825-4c03-979d-f7dc47b9997c'; // use a valid asset ID

api.getAsset(id).then((asset) => {
    if (asset.data.attributes.status === 'ready') {
        console.log('>> Asset CDN URL: ' + asset.data.attributes.url);
        console.log('>> Asset ID: ' + asset.data.attributes.id);
        console.log('>> Render ID: ' + asset.data.attributes.renderId);
    }
});

Asset Schemas

The following schemas are returned by requests to the Serve API.

AssetResponse

The AssetResponse is the response returned by the Serve API get asset request. Includes details of a hosted video, image, audio file, thumbnail or poster image. The response follows the json:api specification.

Methods:

AssetRenderResponse

The AssetRenderResponse is the response returned by the Serve API get asset by render id request. The response is an array of asset resources, including video, image, audio, thumbnail and poster image. The response follows the json:api specification.

Methods:

AssetResponseData

The AssetResponseData contains the type of resource (an asset) and attributes of the asset.

Methods:

AssetResponseAttributes

The AssetResponseAttributes contains the list of asset attributes and their values.

Methods:

API Documentation and Guides

Published

Vulnerabilities

Links

Maintainers

Keywords

Readme

Shotstack NodeJS SDK

Contents

Using the Node SDK

Installation

Video Editing

Video Editing Example

Status Check Example

Save a Template Example

Render a Template Example

Video Editing Schemas

Edit

Example:

Methods:

Timeline

Example:

Methods:

Soundtrack

Example:

Methods:

Font

Example:

Methods:

Track

Example:

Methods:

Clip

Example:

Methods:

VideoAsset

Example:

Methods:

ImageAsset

Example:

Methods:

TitleAsset

Example:

Methods:

HtmlAsset

Example:

Methods:

AudioAsset

Example:

Methods:

LumaAsset

Example:

Methods:

Transition

Example:

Methods:

Offset

Example:

Methods:

Crop

Example:

Methods:

Transformation

Example:

Methods:

RotateTransformation

Example:

Methods:

SkewTransformation

Example:

Methods:

FlipTransformation

Example:

Methods:

MergeField

Example:

Methods:

Template Schemas

Template

Example:

Methods: