openjpegenc: prefer JPC src caps by default
JPC is a tiny bit more efficient as it doesn't have the 8 byte JP2C box. Also, in MPEG TS use case, the parsing is simpler, as MPEG TS expects JPC
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
JPC is a tiny bit more efficient as it doesn't have the 8 byte JP2C box. Also, in MPEG TS use case, the parsing is simpler, as MPEG TS expects JPC