1. No, Elecard avc plugin support closed caption only with EIA-608 standard and EIA-708 in AVC video.
2. Elecard MPEG-2 Video Decoder and Elecard AVC Video Decoder have ~CC Out pin and it is not used when playback video without closed captions. In case you have rendering of you CC out for wideo without closed captions, please, send us a sample for investigation and contact Elecard technical support team firstname.lastname@example.org