Types of captions
Two types of captions are available: EIA-608 and EIA-708.
- EIA-608 is for SD only. It is read directly from Line 21 of the picture data (=1st visible line. Note the white "blocks" in the picture - these are encoded closed captions). It is being extracted from the picture and written as a closed captioning track into the QuickTime movie.
- EIA-708 is for HD only. It is read from VANC Line 9, which is not a visible line. It is directly copied as SMPTE334M packet into the closed captioning track of the QuickTime movie.
If you see the CC logo, Just In recognizes closed captions and they will be recorded into the QuickTime movie, SCC sidecar file or into the MXF container (XDCAM HD422 only) automatically.
Setup
No special setup required. If Just In recognizes closed captions, it will display the "CC" logo in the GUI.
Supported Hardware
As for now the following configurations are supported:
- SD NTSC: Both AJA and Blackmagic in both 8 and 10 Bit.
- HD NTSC: Blackmagic in 10 Bit only, AJA in both 8 and 10 Bit.