actions/transcode/FPSRangeAction.ts

import {Action} from "../../internal/Action.js";
import {Qualifier} from "../../internal/qualifier/Qualifier.js";
import {QualifierValue} from "../../internal/qualifier/QualifierValue.js";
import {IFPSRangeActionModel} from "../../internal/models/ITranscodeActionModel.js";
import {IActionModel} from "../../internal/models/IActionModel.js";

/**
 * @extends SDK.Action
 * @memberOf Actions.Transcode
 * @description Controls the range of acceptable FPS (Frames Per Second) to ensure that video (even when optimized)
 * is delivered with
 * an expected FPS level (helps with sync to audio).
 *
 * <b>Learn more</b>: {@link https://cloudinary.com/documentation/video_transformation_reference#video_settings|Video settings}
 * @see Visit {@link Actions.Transcode|Transcode} for an example
 */
class FPSRangeAction extends Action {
  private from: number;
  private to: number;
  protected _actionModel : IFPSRangeActionModel = {};

  constructor(from: number, to?: number) {
    super();
    this.from = from;
    this._actionModel = {
      actionType: 'fps',
      fps: {from}
    };
    if (to != null) {
      this.to = to;
      this._actionModel.fps.to = to;
    }
  }


  protected prepareQualifiers(): this {
    let qualifierValue;
    if(this.from && this.to) {
      qualifierValue = new QualifierValue(`${this.from}-${this.to}`);
    }else {
      qualifierValue = new QualifierValue(`${this.from}-`);
    }
    this.addQualifier(new Qualifier('fps', qualifierValue));
    return this;
  }
}

export default FPSRangeAction;