Function avfilter_process_command

pub unsafe extern "C" fn avfilter_process_command(
    filter: *mut AVFilterContext,
    cmd: *const i8,
    arg: *const i8,
    res: *mut i8,
    res_len: i32,
    flags: i32,
) -> i32

Make the filter instance process a command. It is recommended to use avfilter_graph_send_command().