readme.md

Usage:

$ npx {url of this gist} {url of master playlist}

How it works:

• Downloads all the media playlists associated with the specified master playlist
• Check if each segment's duration exceeds the target duration defined in the master playlist
• If it exceeds, you'll see the following logs:

=== Vioration: Duration exceeds #EXT-X-TARGETDURATION ===
    Playlist URI: {plylist uri}
    TargetDuration: {target duration}
    Segment URI: {segment uri}
    Duration: {segment uri}

duration-checker.js

#!/usr/bin/env node

const hlx = require('hlx-lib');
  
const srcUrl = process.argv[2];

const {Transform} = require('stream');

class DurationChecker extends Transform {
  constructor() {
    super({objectMode: true});
  }

  _transform(data, _, cb) {
    if (data.type === 'playlist') {
      if (data.isMasterPlaylist) {
        console.log(`Loading master playlist.`);
        console.log(`\tURI: ${data.uri}`);
        return cb(null, data);
      }
      console.log(`Loading media playlist.`);
      console.log(`\tURI: ${data.uri}`);
      const targetDuration = data.targetDuration;
      for (const segment of data.segments) {
        if (segment.duration > targetDuration) {
          console.error('=== Vioration: Duration exceeds #EXT-X-TARGETDURATION ===');
          console.error(`\tPlaylist URI: ${data.uri}`);
          console.error(`\tTargetDuration: ${targetDuration}`);
          console.error(`\tSegment URI: ${segment.uri}`);
          console.error(`\tDuration: ${segment.uri}`);
        }
      }
    }
    cb(null, data);
  }
}

hlx.src(srcUrl, {playlistOnly: true})
.pipe(new DurationChecker())
.pipe(hlx.dest())
.on('error', (err) => {
  console.error(err.stack);
});

package.json

{
  "name": "duration-checker", 
  "version": "0.0.0", 
  "bin": "./duration-checker.js",
  "dependencies": {
    "hlx-lib": "0.0.28"
  }
}