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@skylineos/clsp-player

Skyline Technology Solutions' CLSP Video Player. Stream video in near-real-time in modern browsers.

  • 0.21.1
  • Source
  • npm
  • Socket score

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526
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Skyline CLSP Player

An html5 CLSP video player. CLSP is a proprietary near-real-time video streaming protocol only available via Skyline's SFS solutions.

The highest h.264 keyframe/iframe segment frequency this player currently supports is 2 per second (this is different from frames per second).

Table of Contents

Supported Browsers

Desktop

  • Google Chrome 53+
  • Mozilla Firefox 70+
  • Microsoft Edge 80+ (Chromium-based)

All other desktop browsers are currently not supported.

Mobile

@todo

URL Structure

The network protocol is handled by specifying the following URI format:

[clsp protocol] :// [sfs-ip-address] : [port-number-of-web-socket] / [stream-name]

  • clsp protocol: clsp or clsps
  • sfs-ip-address: the ip address is that of the SFS
  • port-number-of-web-socket: the port is not necessary unless it is something other than 80 or 443
  • stream-name: the stream name as defined on the SFS

Example stream url:

clsp://172.28.12.57:9001/FairfaxVideo0520

Tokenization

With the latest version of the CLSP Player, you are able to control stream access with two diferent token methods.

Hash

The MD5 hash authentication method provides authentication as well as stream access time.

[clsp protocol]-hash://[sfs-ip-address]:[port-number-of-web-socket]/[stream-name]?start=[time-epoch-seconds]&end=[time-epoch-seconds]&token=[hash-token]

The token is created by appending a shared secret to the url. That new string is used to create an MD5 hash. The shared secret must first be set up on the SFS and the stream-requesting application.

NOTE: When using the Hash method of authentication, the [port-number-of-web-socket] is a REQUIRED parameter.

In order to play a video stream that has Hash authentication enabed, there are 3 query parameters you need to pass along with your URL. Here is the structure of a clsp/clsps hash enabled url.

clsps-hash://<host>[:port]/stream?start={epoch_seconds}&end={epoch_seconds}&token={hashed_url}

clsp-hash://<host>[:port]/stream?start={epoch_seconds}&end={epoch_seconds}&token={hashed_url}
  • start: contains the earliest time you want the stream to become available.
  • end: contains the latest time you want the stream to become available.
  • token: contains the entire url sans token, md5 + secret

Installation

Via Yarn

yarn add @skylineos/clsp-player

Via NPM

npm i @skylineos/clsp-player

Using with <script> tag

NOTE: See demos/simple-dist/ and demos/advanced-dist/ for full examples.

A CLSP object is attached to window, which contains the classes and utils you need to create players.

<head> Tag

<head>
  <!-- load CLSP Player styles -->
  <link
    rel="stylesheet"
    href="/path/to/dist/clsp-player.css"
  >
<head>

<script> Tag

<!-- load CLSP Player in `head` or `body` -->
<script src="/path/to/dist/clsp-player.min.js"></script>

<!-- use CLSP Player at end of `body` -->
<script>
  var videoElementId = 'my-video';
  var urls = [
    'clsp://172.28.12.57:9001/FairfaxVideo0520',
    'clsp://172.28.12.57:9001/FairfaxVideo0420',
  ];

  // If you are using a Skyline SFS that uses a default CLSP stream port that
  // isn't `80` (e.g. SFS < v5.2.0), you may set the window-level default port
  // for `clsp` streams:
  window.CLPS.utils.setDefaultStreamPort('clsp', 9001);

  // Construct the player collection
  var iovCollection = window.CLSP.IovCollection.asSingleton();

  // Instantiate the iov instance for the target video element
  iovCollection.create(videoElementId)
    .then(function (iov) {
      // do something with the iov instance
      iov.changeSrc(urls[0]);
    })
    .catch(function (error) {
      // do something with the error
      console.error(error);
    });

  // Or instantiate a tour
  var tour = window.CLSP.TourController.factory(
    iovCollection,
    videoElementId,
    {
      intervalDuration: 10,
    },
  );

  tour.addUrls(urls);
  tour.start();
</script>

<video> tag

We recommend wrapping the video tag in a container element (e.g. div) that the CLSP Player can mutate as needed. The CLSP Player needs to perform some actions on the video element as well as its container.

Note that for clsp streams, the src tag must have a type attribute with a value of video/mp4; codecs='avc1.42E01E'.

This tells the browser exactly what codec to use to decode and play the video. H.264 baseline 3.0 is a least common denominator codec supported on all browsers (according to the MSE development page).

<div class="video-container">
  <div class="clsp-container-fit">
    <video
      id="my-video"
      muted
      playsinline
    >
      <source
        src="clsp://172.28.12.57:9001/FairfaxVideo0520"
        type="video/mp4; codecs='avc1.42E01E'"
      />
    </video>
  </div>
</div>

Using with import or require

NOTE: See demos/simple-src/ and demos/advanced-src/ for full examples.

JS

import {
  IovCollection,
  TourController,
  utils,
} from '@skylineos/clsp-player';

const videoElementId = 'my-video';
const urls = [
  'clsp://172.28.12.57:9001/FairfaxVideo0520',
  'clsp://172.28.12.57:9001/FairfaxVideo0420',
];

try {
  // If you are using a Skyline SFS that uses a default CLSP stream port that
  // isn't `80` (e.g. SFS < v5.2.0), you may set the window-level default port
  // for `clsp` streams:
  utils.setDefaultStreamPort('clsp', 9001);

  // Construct the player collection
  const iovCollection = IovCollection.asSingleton();

  // Instantiate the iov instance for the target video element
  const iov = await iovCollection.create(videoElementId);

  // do something with the iov instance
  iov.changeSrc(urls[0]);

  // Or instantiate a tour
  const tour = TourController.factory(
    iovCollection,
    videoElementId,
    {
      intervalDuration: 10,
    },
  );

  tour.addUrls(urls);
  tour.start();
}
catch (error) {
  // do something with the error
  console.error(error);
}

Styles (SASS)

@import '/path/to/node_modules/@skylineos/clsp-player/dist/clsp-player.css';
// or import it from src
@import '/path/to/node_modules/@skylineos/clsp-player/src/styles/clsp-player.scss';

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Package last updated on 08 Jul 2020

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