About LiveCapture

Hello everyone, I'm the developer of this little tool. Recently I've been deeply researching the technical principles of iOS Live Photos and discovered some interesting things that I'd like to share with you.

Apple's Live Photos are actually very special - they don't just simply package images and videos together, but add a lot of special metadata identifiers at the underlying level. I studied a lot of documentation and open source code (like mentioned in this article), and found that to perfectly replicate iOS native Live Photos in a web browser faces several technical "roadblocks":

• Web applications cannot add special identifiers like {MakerApple}.17 to images
• Cannot set identifiers like com.apple.quicktime.content.identifier in videos
• Cannot create special metadata tracks required by iOS

Simply put, these operations require system-level permissions, just like you can't directly control low-level camera functions through a browser. Even with the most advanced WebAssembly technology and FFmpeg, this limitation cannot be bypassed.

However, I've optimized the conversion algorithm as much as possible, referencing iOS native Live Photos' naming conventions, file structure and metadata format. While this tool has limitations, it's already at the limit of what can be achieved in a web environment.

If you need more professional results, consider using professional apps like IntoLive or TurnLive on iOS devices - they can directly call system APIs to create true Live Photos.

Thank you for using and supporting! Feel free to provide feedback or suggestions anytime.