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@@ -1322,6 +1322,13 @@ Subtitles
Can be used to disable display of subtitles, but still select and decode
them.
+``--sub-clear-on-seek``
+ (Obscure, rarely useful.) Can be used to play broken mkv files with
+ duplicate ReadOrder fields. ReadOrder is the first field in a
+ Matroska-style ASS subtitle packets. It should be unique, and libass
+ uses it for fast elimination of duplicates. This option disables caching
+ of subtitles across seeks, so after a seek libass can't eliminate subtitle
+ packets with the same ReadOrder as earlier packets.
Window
------