Ch.8 Copyright, Licensing and Creative Commons Concept
Question

What does public domain mean?

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Public domain: no copyright, but watch for other rights

Public domain means no copyright protection, so you can use the work freely, but you must still check moral rights, database rights, privacy, trademarks, and source terms.

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(function(){ var players = document.querySelectorAll('[data-audio-captions][data-captions-url]'); var parseTimestamp = function(value) { var parts = value.trim().split(':'); var seconds = parts.pop() || '0'; var minutes = parts.pop() || '0'; var hours = parts.pop() || '0'; return (Number(hours) * 3600) + (Number(minutes) * 60) + Number(seconds.replace(',', '.')); }; var parseCues = function(text) { return text .replace(/\r/g, '') .split(/\n\n+/) .map(function(block) { return block.split('\n').filter(Boolean); }) .filter(function(lines) { return lines.length >= 2 && lines[0] !== 'WEBVTT'; }) .map(function(lines) { if (!lines[0].includes('-->')) { lines.shift(); } var timing = lines.shift() || ''; var parts = timing.split('-->').map(function(part) { return part.trim(); }); return { start: parseTimestamp(parts[0] || '0'), end: parseTimestamp(parts[1] || '0'), text: lines.join(' '), }; }) .filter(function(cue) { return Number.isFinite(cue.start) && Number.isFinite(cue.end) && cue.text !== ''; }); }; var findCue = function(cues, time) { return cues.find(function(cue) { return time >= cue.start && time < cue.end; }) || cues.find(function(cue) { return time < cue.start; }) || cues[cues.length - 1] || null; }; players.forEach(function(player) { var audio = player.querySelector('audio'); var output = player.querySelector('[data-audio-captions-output]'); if (!audio || !output) { return; } fetch(player.dataset.captionsUrl) .then(function(response) { return response.ok ? response.text() : ''; }) .then(function(text) { var cues = parseCues(text); var activeText = ''; var render = function() { var cue = findCue(cues, audio.currentTime); if (!cue || cue.text === activeText) { return; } activeText = cue.text; output.textContent = cue.text; }; render(); audio.addEventListener('timeupdate', render); audio.addEventListener('seeked', render); audio.addEventListener('play', render); }); }); })();