If the IDX file fails to open, proceed to the next step.

If using Mac OS X, select “Get Info,” then click on “Open With. ”

If using Mac OS X, select “Get Info,” then click on “Open With. ”

If the IDX file still does not open, proceed to the next step.

If the IDX file fails to open, follow the steps outlined in method two of this article to open the file using VideoLAN’s VLC media player.