What is a .FFINDEX file?
The .FFINDEX file extension is linked to a type of file called FFmpegSource2 Media Index. This file is like a map for certain media files (like videos and audio) that helps software find different parts of the media quickly, especially the key moments or samples. It's made by FFmpegSource2, which is a special tool that works with FFmpeg, a popular program for handling video and audio files.
When you play a video or audio file using software that works with FFmpegSource2, the .FFINDEX file is created automatically if it wasn't there before. This file helps the software know where everything is in your media file, making it easier and faster to jump to different parts without having to search through the whole file every time. You can also make this index file yourself using a command called FFindex if you need to.
To open or work with .FFINDEX files, you can use FFmpeg when it's set up with FFmpegSource2. Another program that can use these files is AviSynth, as long as it also has FFmpegSource2. These tools recognize the .FFINDEX file and use the information in it to better handle your media files during playback or editing.
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