play from a framecount until another framecount?

[akasal]

I'm trying to code up something that acts like a timeline. playing FROM a specific time is easy. but playing UNTIL a certain time is not so easy. It seems like 'player.currentTime' temporal resolution to the browser is very low.

If I use the below code, it works, the pause kicks in up to a 1.5seconds passed where I want it to. so i have to pad my mp4 a lot.

//START PLAY FROM BUTTON
var b = document.getElementById("mylinkb");
b.onclick=function(){
player.currentTime = 4;
player.play();
return false;
}
//STOP PLAY AT SPECIFIC TIME
function runFunction() {
let y = (player.currentTime);
if (y>5.3) {player.pause();}
}

Any suggestions for tightening up player.currentTime ? it slips quite a bit. Thanks.