From Multiple Videos

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This example demonstrates how to load multiple video files into VideoEditor SDK as a single video.

Load and combine video files#

Obtain the URLs for the videos you want to load from either the local file system or the app bundle. In our example we are loading videos from the app bundle. Then create VideoSegment objects from these URLs and pass them to a Video constructor as segments parameter in order to instantiate a video object.

Trim video segments#

✨Introduced in VideoEditor SDK v11.3.0

The duration of individual VideoSegments can be trimmed when creating the input Video which will then initialize the editor with a video composition with corresponding pretrimmed video clips. The user can still change this start and end time in the clip trim tool.

Initialize the editor#

This combined Video object we now pass as videoAsset to the VideoEditViewController to instantiate the video editor. Setting the current class as the delegate of the VideoEditViewController allows us to implement export, cancellation and error handling there.


import AVFoundation
import UIKit
import VideoEditorSDK

class OpenVideoFromMultipleVideoClipsSwift: Example, VideoEditViewControllerDelegate {
  override func invokeExample() {
    // Get the URLs for video files on the local file system. This could be any file within the app bundle
    // or also a file within the documents or temporary folders for example. This example will use
    // files from the app bundle.
    let firstURL = Bundle.main.url(forResource: "Skater", withExtension: "mp4")!
    let secondURL = Bundle.main.url(forResource: "test_video", withExtension: "mp4")!

    // Create `VideoSegment`s from above `URL`s.
    let firstAsset = VideoSegment(url: firstURL)
    let secondAsset = VideoSegment(url: secondURL, startTime: 1.5, endTime: 5.0)

    // Create a `Video` from above assets.
    let video = Video(segments: [firstAsset, secondAsset])

    // Create a video editor and pass it the video. Make this class the delegate of it to handle export and cancelation.
    let videoEditViewController = VideoEditViewController(videoAsset: video)
    videoEditViewController.delegate = self

    // Present the video editor.
    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)
  }
}