> > > + if (strlen(user_data + 16) > 0) > + av_log(logctx, AV_LOG_DEBUG, "user data:\"%s\"\n", user_data + > 16); > Eugh, no, no, no. Some encoders put random junk in here and my terminal goes crazy. The h264 stuff is bad as well but libav people were so insistent this stuff was printed. Kieran