ShortClipVideoTrimmerUI

Example

To run the example project, clone the repo and run pod install from the Example directory first.

Trimming

Requirements

• iOS 9.0+
• Swift 5.0+

Installation

CocoaPods

ShortClipVideoTrimmerUI is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod 'ShortClipVideoTrimmerUI'

Then run:

pod install

Usage

⚠️ Note
This library only provides the UI for video trimming with frames.
It does not perform the actual trimming.
You will receive the trimming area's start and end times, and can handle trimming based on that.

Trimming Setup

Create an instance of ShortClipVideoTrimmerContentView (via Interface Builder or code) and add it to your view hierarchy:

shortClipTrimmerContentView.delegate = self
shortClipTrimmerContentView.startOperation(
    asset: asset,
    maxTrimmingDuration: maxTrimmingDuration,
    numberOfFramesPerCycle: numberOfFramesPerCycle
)

• asset is an AVAsset object.
• maxTrimmingDuration defines the maximum trimming length.
• numberOfFramesPerCycle controls how many frames are shown in one cycle.

Sync the trimmer’s position bar with video playback:

// videoPlayer is an instance of AVPlayer
videoPlayer.addPeriodicTimeObserver(
    forInterval: CMTime(seconds: 0.01, preferredTimescale: 600),
    queue: .main
) { _ in
    shortClipTrimmerContentView.updatePositionBarConstraint(cmTime: videoPlayer.currentTime())
}

Customization

You can customize the appearance of ShortClipVideoTrimmerContentView:

shortClipTrimmerContentView.updateHandlerWidth(width: 10.0)
shortClipTrimmerContentView.updateKnobWidth(width: 3.0)
shortClipTrimmerContentView.updatePositionBarWidth(width: 4.0)
shortClipTrimmerContentView.updateTrimmingAreaBorderWidth(width: 2.0)

shortClipTrimmerContentView.handlerColor(color: .blue)
shortClipTrimmerContentView.updateTrimmingAreaBorderColor(color: .blue)
shortClipTrimmerContentView.updateKnobColor(color: .white)
shortClipTrimmerContentView.updatePositionBarColor(color: .white)
shortClipTrimmerContentView.updateTrimmingOutsideBackgroundColor(color: .white)
shortClipTrimmerContentView.updateTrimmingOutsideMaskAlpha(alpha: 0.5)

Delegate

By conforming to the ShortClipVideoTrimmerContentViewDelegate, you can receive updates when the trimming start or end positions change.

For more information, check the example project.

Author

Sagar Chandra Das
Email: [email protected]

License

ShortClipVideoTrimmerUI is available under the MIT License.