The LEI-599D will accept HD/SD SDI transport streams with embedded closed captions from either VBI (line21/22) or VANC (SMPTE 334 Caption Data Packet {CDP}) and decode them. The captions will then be "burnt" into the outgoing HD/SD-SDI stream so that the captions now appear during active video. Captions which appear in active video are called "Open" captions. The captioning channels that can be decoded ("Open") are CC1, CC2, CC3, CC4, S1, S2, S3, S4, S5 and S6. The VBI and 708 VANC closed captions...