I have been able to force CEA608 subtitles on mpegts streams and it is working as expected, but I have not found a way to force anything but the first CC. In the US there is often a Spanish stream and VLC is reporting these on CC-3 but I have tried setAccessibilityChannel(3) but there no subtitles, forcing "sp" etc without success.

CCExtractor finds them with field 2 caption one which should be 3.

Is there any working example dealing with multiple set of captions?