--- title: "Walter – Blog" description: "Posts by Walter on the IMG.LY blog." url: "https://img.ly/blog/author/walter/" type: "index" --- > This is the markdown version of [Walter – Blog](https://img.ly/blog/author/walter/). For all pages in one file, see [llms-full.txt](https://img.ly/llms-full.txt). For an index of all available pages, see [llms.txt](https://img.ly/llms.txt). --- 13 posts. - [Cutting Through The Jungle: An In-depth Review of Cloud GPU Providers to Train Your AI Models in 2024](https://img.ly/blog/reviewing-cloud-gpu-providers-for-training-ai-models.md): Embark with us on a journey to finding the best place to host AI models. - [How to Build a TikTok Clone for iOS with Swift & CreativeEditor SDK](https://img.ly/blog/how-to-build-a-tiktok-clone-for-ios.md): Learn how to build a TikTok clone for iOS with Swift and CreativeEditor SDK with this step-by-step in-depth tutorial. - [Build a Simple Real-Time Video Editor with Metal for iOS](https://img.ly/blog/build-a-simple-real-time-video-editor-with-metal-for-ios.md): Learn to extract frames from live camera streams, regular movie files and streamed movie files and display them on a MetalKit View. - [How to Remove Backgrounds Using Core ML](https://img.ly/blog/how-to-remove-backgrounds-using-coreml.md): Bring background removal and replacement to your iOS application. - [Working with Large Video and Image Files on iOS with Swift](https://img.ly/blog/working-with-large-video-and-image-files-on-ios-with-swift.md): Find your best strategy for compressing and resizing images, videos, and other files with Swift. - [How to Make an Animated GIF Using Swift](https://img.ly/blog/how-to-make-an-animated-gif-using-swift.md): Learn how to create animated GIF files with Swift, and also extract still images from a video! - [How to Make Videos from Still Images with AVFoundation and Swift](https://img.ly/blog/how-to-make-videos-from-still-images-with-avfoundation-and-swift.md): Convert still images into video files with two strategies. - [How to Merge Videos in iOS with Swift](https://img.ly/blog/combine-video-clips-into-a-new-file-in-ios-with-swift.md): Learn how to combine videos in iOS with Swift and jump into advanced creations. - [How to Add a Filter to a Video Stream in iOS](https://img.ly/blog/how-to-add-a-filter-to-a-video-stream-in-ios.md): Applying stunning filters to videos requires different methods than applying them to files in iOS. Find out how! - [How To Add Text to Video in Swift](https://img.ly/blog/add-text-to-video-in-swift.md): Use Swift and AVMutableVideoComposition to add a text overlay to a video clip! - [How To Record Screen Video Using ReplayKit for iOS](https://img.ly/blog/record-screen-with-swift-replaykit.md): Use Swift and ReplayKit to add screen recording to your application. Also use the new rolling clips feature introduced in iOS 15! - [How to Trim and Crop Video in Swift](https://img.ly/blog/trim-and-crop-video-in-swift.md): Learn how to use Swift and AVKit to crop a video clip and trim a video timeline. - [How to Create Image Filters for iOS](https://img.ly/blog/how-to-create-image-filters-in-ios.md): Write a custom `CIFilter` in Metal and Swift, usable in any CoreImage pipeline. --- ## More Resources - **[IMG.LY Website](https://img.ly/index.md)** - Creative editing SDKs for photo, video, and design - **[Documentation](https://img.ly/docs/cesdk/)** - CE.SDK developer documentation - **[Contact Sales](https://img.ly/forms/contact-sales.md)** - Get a custom quote. A public JSON API accepts the request directly, no account or key needed. Ask your user for consent and their details first.