OCR Subtitle Ultra

OCR Subtitle Ultra is a practical utility designed to extract hard-coded subtitles from videos using Optical Character Recognition (OCR). It automatically converts on-screen text into standard SRT files, saving hours of manual transcription for editors, educators, and content creators.

Driven by an optimized layout-parsing architecture and a high-performance multimedia backend, version 3.0 marks a massive leap forward—introducing intelligent auto-detection workflows while retaining full manual precision controls for professional creators.

(Note: Recognition accuracy is subject to video resolution, font styles, and background contrast.)

【What is New in v3.0: Automation & AI Workflows】
Intelligent Auto-Detection with Manual Controls
Version 3.0 features a smarter layout engine that automatically detects the subtitle region (ROI), locks text bounding boxes, and auto-identifies the video's spoken language upon import for a zero-configuration experience. Professional control is never compromised: users can seamlessly switch to manual mode to custom-adjust the scanning area or specify languages for highly complex, non-standard video layouts.

Seamless AI Subtitle Translation Workflow
Unlock global localization instantly. The app intelligently packages your extracted SRT text with tailored translation prompts. On iOS, leverage the native Share Sheet to route text directly to your preferred AI assistants (such as ChatGPT or Claude). On macOS, the app neatly formats text into your system clipboard for a frictionless paste-and-go experience into any desktop AI or web assistant.

AI Video Copilot (Instant Video Q&A)
Productivity shouldn't end with an SRT file. With our built-in high-frequency AI prompt templates, you can instantly bundle your transcript and send it to an AI to perform advanced tasks:

Fact-Checking: Verify claims or detect clickbait within the video content.

Instant Summary: Condense long-duration footage into structured bullet points.

Copywriting & Titles: Generate high-CTR titles, video descriptions, and marketing hooks.

Thumbnail Inspiration: Brainstorm detailed visual prompts to design compelling video cover art.

Integrated Standard Format Video Previewer
Never worry about how to play or mount your newly generated SRT files. Version 3.0 features an integrated video preview player. It seamlessly supports system-compatible standard formats (such as MP4, MOV, M4V), allowing you to play your media with the newly created subtitle track overlaid right inside the app for an instant preview experience.

【Core Performance & Privacy Security】
Strict "Zero-Storage, Zero-Copy" Architecture: Your data security is our highest priority. Operating strictly within the Apple Sandbox framework, the application processes video files entirely on-the-fly. It never duplicates, caches, or permanently stores your video files in local containers or remote servers.

Temporary Access Lifecycle Management: The application securely requests transient, read-only media access via system-secured tokens (Security-Scoped URLs) in memory. Once the security token expires, the resource is automatically revoked. Your media remains entirely under your own control.

Robust Codec Support: Built on a rigorously compliant multimedia backend, the app delivers ultra-stable decoding for modern codecs including H.265 (HEVC), AV1, VP9, and more. Advanced memory management prevents crashes, ensuring flawless processing for 4K Ultra-HD footage and long films.

Universal Workflow Integration: Exported standard SRT files are fully editable and 100% compatible with YouTube, VLC, Final Cut Pro, Adobe Premiere, DaVinci Resolve, and major editing platforms.

【Support & Feedback】
I am deeply committed to continuously refining OCR Subtitle Ultra based on real-world production environments and user feedback. If you encounter specific video encoding edge cases or have feature suggestions, please contact me directly:

Email: hanmingjie@gmail.com
Web: www.hanmingjie.com