|Building font cache dialog box|
1. Open VLC player
2. Go to Tools > Preferences
3. Check "All" radio button as under “Show Settings”
4. Go to Video > Subtitles/OSD in the left pane
5. On the right pane, select “Dummy font rendering functions” as "Text rendering module"
6. Click Save
Now open VLC, you should be free of cache-building dialog box. VLC only rebuilds font cache file to display subtitles in videos, hence this trick should not cause any problem.
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