用記事本打開 .idx檔

假設要刪除的是中文，找下列字串

# Chinese
id: zh, index: 0
# Decomment next line to activate alternative name in DirectVobSub / Windows Media Player 6.x
# alt: Chinese
# Vob/Cell ID: 1, 1 (PTS: 0)
timestamp: 00:00:01:034, filepos: 000000000
timestamp: 00:00:03:036, filepos: 000001000
.
.
.
timestamp: 00:22:53:939, filepos: 000196800

將上面的這一整段文字刪除，另存新檔。

同理，要刪除韓文就找韓文的那一段字串。