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Hi, PTE AV Studio 12 Pro (Beta) is available all members of this forum: Download For Windows: https://files.wnsoft.com/test/pte12abc/pteavstudio-setup.exe For Mac: https://files.wnsoft.com/test/pte12abc/PTE-AV-Studio.dmg PTE AV Player for Mac: https://files.wnsoft.com/test/pte12abc/PTE-AV-Player.dmg A free license key for the Beta version: D206I-01ZKI-GH8S2-HSS8X-E7N7D System Requirements Windows 10 or Windows 11. macOS 11 Big Sur - macOS 26 Tahoe (Apple Silicon or Intel chip). Important notes You can keep your existing version of PTE AV Studio 11.0 and use both versions together. We recommend to untick an option “Associate .pte projects...” when you install a Beta version. For new customers. If you purchase version 11.0 today or later, you'll get a free upgrade to a final version 12.0 when it's ready (in May-June, 2026). We continue to work on version 12.0 and plan to add new features and new slide styles before the final version. _________________________________________________ What's New in PTE AV Studio 12 Pro: Slow-Motion and Video Speed Control Take complete control over video playback. Adjust video speed using key points to speed up, slow down, or freeze the action exactly where you need it. Insert pauses inside your video clips to emphasize key moments. Learn more The new frame interpolation creates smooth slow-motion effects by blending frames together, eliminating jerky playback when slowing down your footage. (Pro version only) Learn more Modern Video Formats and AV1 Encoder Create content for social media and the web. PTE AV Studio 12 adds full support for vertical video (9:16 for YouTube Shorts, TikTok, and Instagram Reels) and square format (1:1 for Instagram posts). New resolutions including 2560x1440, 1080x1920, 720x1280, and 1080x1080 cover all modern platforms. The "Auto" resolution preset automatically matches your project settings for quick exports. The revolutionary AV1 encoder produces videos up to 50% smaller than H.264 while maintaining the same visual quality, making it perfect for web publishing. The improved Video Export interface with "Show/Hide Advanced Options" keeps things simple yet powerful. The "Fast decode (web)" option creates optimized videos for quick loading and playback on your website. You can even pause video encoding and resume later. Improved Video Playback Smoother playback and better audio/video synchronization for variable frame rate (VFR) videos, commonly used by most modern smartphones in H.264 and HEVC formats. HDR video support (HLG and Dolby Vision, Rec.2020 color space). AV1 video playback is now hardware accelerated, significantly reducing CPU load when previewing projects with AV1 footage. On Windows this requires graphics cards from 2020 or newer (NVIDIA RTX 3050+, AMD RX 6000+, Intel Arc or 11th Gen+ integrated graphics); on macOS, an Apple M3+ chip. Improved Chroma Key for Video Clips The chroma key function for video clips has been completely rewritten. It now works reliably with all popular background colors: green, blue, red, and more. Background removal quality is significantly improved. Edge handling is especially enhanced: color spill is eliminated and object outlines are clean and sharp. Learn more HEIC and AVIF Image Support HEIC, the format used by iPhone for storing photos by default, is now supported on Windows. Windows users can now import iPhone photos directly into their slideshows, without converting them first. HEIC was already supported on macOS in previous versions. AVIF support is now available on both Windows and macOS, covering the modern web image format used by many websites and image services. New Creative Effects Bring your slideshows to life with stunning visual effects. The Dynamic Gradient map creates color transformations and artistic looks. Learn more The Chromatic Displacement map adds glitch effects and distortions for modern, eye-catching visuals. (Pro version only) The Instant speed modifier disables interpolation between keyframes for snappy, precise animations. Learn more Blur and Unsharp mask can now be adjusted separately for parent and child objects. Quick Search. New Slide Styles and Transitions Find the perfect slide style or transition instantly. Type a keyword and PTE AV Studio will show you matching results immediately. No more scrolling through hundreds of options. Just type "zoom", "push", or "fade" and get what you need. You can also filter slide styles by the number of images they require, making it easy to find styles that match your current selection. New transitions: Spots, Push Smooth, Rotating Linear Wipe. New slide styles: Zoom Out with Fade, Brush Strokes - Frosted Glass. Learn more Sound Object & Built-in Library Create engaging slideshows with impactful sound effects. The new Sound object lets you play short audio files to enhance your slideshows and AV shows. Choose from our built-in Sound Library with camera shutters, clicks, page turns, and whooshes, or import your own custom audio files. Add whoosh sounds for fast transitions, subtle clicks when images appear, or any other short audio effects that bring your slideshow to life. Adjust sound volume for individual video clips and sound objects with precision. Learn more Voice Recording on Mac Mac users can now record voice-overs directly in PTE AV Studio without external tools. Faster Project Backups & 2 GB+ ZIP Support Back up your projects 3-4 times faster, saving precious time when archiving large projects with hundreds of high-resolution images and video clips. The Create Backup in ZIP command now correctly handles projects with multiple files that share the same name in different folders. Added support for creating ZIP archives of projects larger than 2 GB. Other Improvements Export Slides to Images can now include transition effects. Transition group expand/collapse state is now remembered. Improved interpolation between keyframes for long panoramas when using the Smooth modifier or other speed modifiers. Improved installer on Windows: fonts now render larger and are easier to read at 125%+ display scaling (HiDPI support), and the installer now respects the system Dark Mode theme. Added a Japanese translation. P.S. Click the "Follow" button at the top of this page to receive notifications about new Beta releases.

Hi Mary, Thanks for sending me the sample video file and project! I've reproduced the issue with freezing on video encoding and strange speed. We'll check the code.