Converting closed captions from CEA-608/708 SDI to WebVTT
Flussonic can receive an SDI stream with CEA-608/708 closed captions (CC) and convert them to WebVTT format automatically. It is done to further transmit a transcoded stream via HLS, DASH, etc. without sacrificing closed captions.
Flussonic captures SDI streams with the help of Decklink SDI, Stream Labs SDI, AJA SDI and Magewell SDI cards.
About CEA-608 and CEA-708
CEA-608 and CEA-708 are standards for closed captioning for TV streams in US and Canada. CEA-608 is used for NTSC TV broadcasts or analog television, while CEA-708 is used for ATSC digital television (DTV).
For more information about WebVTT format, see: About WebVTT subtitles.