gistfile1.txt

if (autosync) {
	    /*
	     * Adjust this raw delay value by calculating the expected
	     * delay for this frame and generating a new value which is
	     * weighted between the two.  The higher autosync is, the
	     * closer to the delay value gets to that which "-nosound"
	     * would have used, and the longer it will take for A/V
	     * sync to settle at the right value (but it eventually will.)
	     * This settling time is very short for values below 100.
	     */
	    float predicted = mpctx->delay / playback_speed + *time_frame;
	    float difference = delay - predicted;
	    delay = predicted + difference / (float)autosync;
	}