DURATION_FIRST    192 libavfilter/af_amix.c         { "first",    "Duration of first input.",    0, AV_OPT_TYPE_CONST, { .i64 = DURATION_FIRST    }, 0, 0, A|F, "duration" },
DURATION_FIRST    417 libavfilter/af_amix.c         (s->duration_mode == DURATION_FIRST && !(s->input_state[0] & INPUT_ON)) ||
DURATION_FIRST     58 libavfilter/f_interleave.c        { "first",    "Duration of first input",    0, AV_OPT_TYPE_CONST, { .i64 = DURATION_FIRST    }, 0, 0, flags_, "duration" }, \
DURATION_FIRST    123 libavfilter/f_interleave.c         (ff_outlink_get_status(ctx->inputs[0]) && s->duration_mode == DURATION_FIRST)) {