ArtPlayer/packages/artplayer/src/player/attrInit.js

import { clamp, sleep } from '../utils';

export default function attrInit(art, player) {
    const {
        option,
        refs: { $video },
    } = art;
    Object.keys(option.moreVideoAttr).forEach(key => {
        $video[key] = option.moreVideoAttr[key];
    });

    if (option.muted) {
        $video.muted = option.muted;
    }
    
    if (option.volume) {
        $video.volume = clamp(option.volume, 0, 1);
    }

    if (option.poster) {
        $video.poster = option.poster;
    }

    if (option.autoplay) {
        $video.autoplay = option.autoplay;
    }

    sleep().then(() => {
        art.emit('beforeMountUrl', option.url);
        $video.src = player.mountUrl(option.url);
        art.emit('afterMountUrl', option.url);
    });
}