As of V188.8.131.52.3, non-legacy Videon devices were updated with support for SMPTE-334-2 608/708 Closed Captions via SDI input for HD/UHD resolutions.
The current behaviors of closed captions on our products are the following:
- Input caption data must be SMPTE-334-2 and can be 608 or 708
- On output the captions will be wrapped/packaged as 708
- When the user selects SDI input and the SDI input contains closed caption data (embedded in the VANC) the encoder will include this data in the transport stream outputs
- Important Note: In Encoder Control on the Web UI, the Video Profile for the input with Closed Captions must have "Enable KLV Timecode Insertion for Video Frames" turned OFF when streaming to YouTube or the closed caption data could appear distorted.