Yen Chi Hsuan d631d5f9f2 [utils] Fix TTML conversion
Tolerate invalid timestamps (closes #7909)
2015-12-19 18:21:42 +08:00
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2015-10-02 13:42:11 +02:00
2015-02-21 14:55:13 +01:00
2015-12-19 18:21:42 +08:00