From Remote URL

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VideoEditor SDK supports adding custom overlays directly from remote URLs instead of downloading the asset beforehand. For an example of how to download remote resources in advance consult this section of the guides.

Load overlay from remote URL#

For the custom overlay we construct an Overlay object providing the remote resource URL and a display name for the overlay. In addition we set the initial blend mode to hardLight, an exhaustive list of available blend modes can be found in the API docs.

Add overlay to asset catalog#

In order to add the new overlay to our asset catalog, we first add the default items and then append our overlay to the overlays array.


import UIKit
import VideoEditorSDK

class VideoAddOverlaysFromRemoteURLSwift: Example, VideoEditViewControllerDelegate {
  override func invokeExample() {
    // Create a `Video` from a URL to a video in the app bundle.
    let video = Video(url: Bundle.main.url(forResource: "Skater", withExtension: "mp4")!)

    // Create a custom `Overlay`.
    // The overlay tool is optimized for remote resources which allows to directly
    // integrate a remote URL instead of downloading the asset before. For an
    // example on how to download the remote resources in advance and use the local
    // downloaded resources, see: Examples/Text/AddFonts/FromRemoteURL.
    let customOverlay = Overlay(identifier: "imgly_overlay_grain", displayName: "Grain", url: URL(string: "https://img.ly/static/example-assets/imgly_overlay_grain.jpg")!, thumbnailURL: nil, initialBlendMode: .hardLight)

    // Create a `Configuration` object.
    let configuration = Configuration { builder in
      // In this example we are using the default assets for the asset catalog as a base.
      // However, you can also create an empty catalog as well which only contains your
      // custom assets.
      let assetCatalog = AssetCatalog.defaultItems

      // Add the custom overlay to the asset catalog.
      assetCatalog.overlays.append(customOverlay)

      // Use the new asset catalog for the configuration.
      builder.assetCatalog = assetCatalog
    }

    // Create and present the video editor. Make this class the delegate of it to handle export and cancelation.
    let videoEditViewController = VideoEditViewController(videoAsset: video, configuration: configuration)
    videoEditViewController.delegate = self
    videoEditViewController.modalPresentationStyle = .fullScreen
    presentingViewController?.present(videoEditViewController, animated: true, completion: nil)
  }

  // MARK: - VideoEditViewControllerDelegate

  func videoEditViewControllerShouldStart(_ videoEditViewController: VideoEditViewController, task: VideoEditorTask) -> Bool {
    // Implementing this method is optional. You can perform additional validation and interrupt the process by returning `false`.
    true
  }

  func videoEditViewControllerDidFinish(_ videoEditViewController: VideoEditViewController, result: VideoEditorResult) {
    // The user exported a new video successfully and the newly generated video is located at `result.output.url`. Dismissing the editor.
    presentingViewController?.dismiss(animated: true, completion: nil)
  }

  func videoEditViewControllerDidFail(_ videoEditViewController: VideoEditViewController, error: VideoEditorError) {
    // There was an error generating the video.
    print(error.localizedDescription)
    // Dismissing the editor.
    presentingViewController?.dismiss(animated: true, completion: nil)
  }

  func videoEditViewControllerDidCancel(_ videoEditViewController: VideoEditViewController) {
    // The user tapped on the cancel button within the editor. Dismissing the editor.
    presentingViewController?.dismiss(animated: true, completion: nil)
  }
}