{"re",OPT_BOOL|OPT_EXPERT,{(void*)&rate_emu},"read input at native frame rate",""},
{"loop_input",OPT_BOOL|OPT_EXPERT,{(void*)&loop_input},"loop (current only works with images)"},
{"loop_output",HAS_ARG|OPT_INT|OPT_EXPERT,{(void*)&loop_output},"number of times to loop output in formats that support looping (0 loops forever)",""},
{"loop_input",OPT_BOOL|OPT_EXPERT,{(void*)&loop_input},"deprecated, use -loop"},
{"loop_output",HAS_ARG|OPT_INT|OPT_EXPERT,{(void*)&loop_output},"deprecated, use -loop",""},