: This is the most frequent use. The .idx file contains timestamps and positioning data, while an accompanying .sub file contains the actual subtitle images.
Place the video file, the .sub file, and the .idx file in the . how to open .idx
Many other programs use .idx as a custom index: : This is the most frequent use
When in doubt, and try opening the other file in the folder. The .idx is almost always just a helper file. Many other programs use
Look for the original software that created the file. The .idx alone is useless without its partner file (usually .dat , .chm , .gmap , or .rec ).
If you’ve come across a file with the .idx extension and can’t open it, don’t worry—you’re not alone. The .idx extension is used by for different purposes. It is rarely a standalone file; it usually works alongside another file (like a .sub , .bak , or .dat ).
If the .idx file is related to a media file, such as a DVD or a video file, you can try opening it with a media player. Some popular media players that support .idx files include: