CEA 608 subtitle out of sync

Samples:

subtitle appear after a few seconds from the sound: http://sproutonline-pmd.edgesuite.net/MPX/video/NBCU_Sprout/71/479/160727_3075367_Caillou_s_Play_Time_2500.mp4

in addition some of sentences are shown for a second and disappear: http://sproutonline-pmd.edgesuite.net/MPX/video/NBCU_Sprout/71/479/160727_3075363_Caillou_Gets_Active_2500.mp4