quality-levels

[todary]

I try using quality-levels but not working
1- node_modules/videojs-http-source-selector-mute/dist/videojs-http-source-selector-mute.min.js
2- node_modules/videojs-contrib-quality-levels/dist/videojs-contrib-quality-levels.min.js

player.httpSourceSelectorMute();

[gkatsev]

Unfortunately, quality-levels support never got implemented. You'll need to use the DASHjs API directly to interact with those.

[s3bubble]

Hi we can look into implementing this for dash as we have the same issue we need dash for drm and ssai.

You can see that it is implemented here: https://reference.dashif.org/dash.js/nightly/samples/dash-if-reference-player/index.html

var createBitrateSwitchMenu = function() {
    var contentFunc;

    if (bitrateListBtn) {
        destroyMenu(bitrateListMenu, bitrateListBtn, menuHandlersList.bitrate);
        bitrateListMenu = null;
        var availableBitrates = {
            menuType: 'bitrate'
        };
        availableBitrates.audio = self.player.getBitrateInfoListFor && self.player.getBitrateInfoListFor('audio') || [];
        availableBitrates.video = self.player.getBitrateInfoListFor && self.player.getBitrateInfoListFor('video') || [];
        availableBitrates.images = self.player.getBitrateInfoListFor && self.player.getBitrateInfoListFor('image') || [];

        if (availableBitrates.audio.length >= 1 || availableBitrates.video.length >= 1 || availableBitrates.images.length >= 1) {
            contentFunc = function(element, index) {
                var result = isNaN(index) ? ' Auto Switch' : Math.floor(element.bitrate / 1000) + ' kbps';
                result += element && element.width && element.height ? ' (' + element.width + 'x' + element.height + ')' : '';
                return result;
            };

            bitrateListMenu = createMenu(availableBitrates, contentFunc);
            var func = function() {
                onMenuClick(bitrateListMenu, bitrateListBtn);
            };
            menuHandlersList.bitrate = func;
            bitrateListBtn.addEventListener('click', func);
            bitrateListBtn.classList.remove('hide');

        } else {
            bitrateListBtn.classList.add('hide');
        }
    }
};

My question is how do you access dash.js api calls via the videojs-contrib-dash plugin?

How can we access this.

self.player.getBitrateInfoListFor('video') 

With videojs?

[s3bubble]

forget the last comment we can access the quality levels like this.

import dashjs from 'dashjs';
import videojs from 'video.js';

function handleQualityLevels(player, tech) {

    const mediaPlayer = player.dash.mediaPlayer;
    console.log('handlePlaybackMetadataLoaded', mediaPlayer.getBitrateInfoListFor('video'));

    var cfg = {
        'streaming': {
            'abr': {
                'autoSwitchBitrate': {}
            }
        }
    };
    
    cfg.streaming.abr.autoSwitchBitrate['video'] = false;
    mediaPlayer.updateSettings(cfg);
    mediaPlayer.setQualityFor('video', 1, true);

}

export default function setupAudioTracks(player, tech) {
    player.dash.mediaPlayer.on(
        dashjs.MediaPlayer.events.PLAYBACK_METADATA_LOADED,
        handleQualityLevels.bind(null, player, tech)
    );
}

This will give us.

Just need to handle the switching logic.

[s3bubble]

This works ill post here not going to do a PR as what we are using it for wont get approved but might help someone else.

import dashjs from 'dashjs';
import videojs from 'video.js';

function handleQualityLevels(player, tech) {

    const mediaPlayer = player.dash.mediaPlayer;
    player.dashQualityLevels = mediaPlayer.getBitrateInfoListFor('video');
    player.trigger('dashQualityLevels');

    player.on("dashQualityLevelsSelected", function(e) {
        let select = e.target.player.dashQualityLevelsSelected;
        console.log('levels', select);

        let cfg = {
            'streaming': {
                'abr': {
                    'autoSwitchBitrate': {}
                }
            }
        };

        cfg.streaming.abr.autoSwitchBitrate['video'] = false;
        mediaPlayer.updateSettings(cfg);
        mediaPlayer.setQualityFor('video', select, true);

    });

}

export default function setupAudioTracks(player, tech) {
    player.dash.mediaPlayer.on(
        dashjs.MediaPlayer.events.PLAYBACK_METADATA_LOADED,
        handleQualityLevels.bind(null, player, tech)
    );
}

The to use it first create a html ul dom element to populate.

<video id="player-ocean" width=600 height=300 class="video-js vjs-default-skin" controls crossorigin="anonymous">
    <track default kind="captions" src="https://vjs.zencdn.net/v/oceans.vtt" srclang="en" label="Oceans">
  </video>
  <ul id="bitrateLevels"></ul>

The create and trigger.

var playerOcean = videojs('player-ocean');;

playerOcean.ready(function() {
    playerOcean.src({
        src: 'http://dash.edgesuite.net/akamai/bbb_30fps/bbb_30fps.mpd',
        type: 'application/dash+xml'
    });

    playerOcean.on("dashQualityLevels", function(e) {
        let levels = e.target.player.dashQualityLevels;
        const ul = document.getElementById('bitrateLevels');
        levels.forEach((element, i) => {
            let li = document.createElement("li");
            li.innerHTML = element.height;
            li.setAttribute('height', element.height);
            li.setAttribute('index', i);
            li.onclick = function(el) {
                playerOcean.dashQualityLevelsSelected = el.target.getAttribute('index');
                playerOcean.trigger('dashQualityLevelsSelected');
            }
            ul.appendChild(li);
        });
    });

});