Skyline Technology Solutions' CLSP Video Player. Stream video in near-real-time in modern browsers.
npm install @skylineos/clsp-playerAn html5 CLSP video player. CLSP is a proprietary near-real-time video streaming protocol only available via Skyline's SFS solutions.
- Supported Browsers
- Desktop
- Mobile
- CLSP Streams
- URL Structure
- Tokenization
- JWT
- Default Port
- Installation
- Via Yarn
- Via NPM
- Use
- via
`
####
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).
`html`
NOTE: See demos/single-player/ and demos/advanced-src/ for full examples.
#### JS
`js
import {
IovCollection,
utils,
} from '@skylineos/clsp-player';
const videoElementId = 'my-video';
const urls = [
'clsps://bd-demo-sfs1.skyvdn.com/testpattern',
'clsps://bd-demo-sfs1.skyvdn.com/testpattern',
];
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 portclsp
// for streams:
utils.setDefaultStreamPort('clsp', 9001);
// Construct the player collection
const iovCollection = IovCollection.asSingleton();
// Instantiate the iov instance for the target video element
const iov = iovCollection.create({ videoElementId });
// play a CLSP stream with the iov instance
await iov.changeSrc(urls[0]);
}
catch (error) {
// do something with the error
console.error(error);
}
`
#### Styles
`css`
@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.css';
####
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.
`html`
During testing, we have encountered an issue where a large number of CLSP streams ( > 30 ) played on a single page in Chrome can appear choppy or to have a low framerate. This same test / demo works without issue on other machines, or in Firefox.
The underlying symptom appears to be a large number ( > 50 ) of Style recalcs / sec` as reported by the Chrome Performance Monitor. This high number has only been observed in Chrome with specific video cards and with hardware acceleration enabled (which is the default setting).
This appears to be a bug in the Chrome browser, and there are anecdotal reports of this behavior online starting from early 2019, but no official bug report that we are aware of.
At the moment, the only known workarounds are to disable hardware acceleration in Chrome's settings, try using the Firefox browser, or try using a different video card.