uni/slides/223015b/assets/demos/container-vs-codec.html

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<html lang="de">
<head>
<meta charset="UTF-8">
<title>Container ≠ Codec</title>
<style>
  :root {
    --dark: #1a1a2e;
    --muted: #6b7280;
    --soft: #f8fafc;
    --border: #cbd5e1;
    --hl: #d63384;
    --container: #2563eb;
    --video: #7c3aed;
    --audio: #ea580c;
    --subs: #16a34a;
    --meta: #94a3b8;
  }
  html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
  body { padding: 28px 40px; }
  h1 { text-align: center; margin: 0 0 6px; font-size: 1.75rem; }
  .sub { text-align: center; color: var(--muted); margin-bottom: 22px; font-size: 1.05rem; }
  .sub strong { color: var(--dark); }

  .scene {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
    max-width: 1200px;
    margin: 0 auto;
  }

  .container-box {
    border: 3px dashed var(--container);
    border-radius: 14px;
    padding: 14px 16px 18px;
    background: #fff;
    position: relative;
  }
  .container-tag {
    position: absolute;
    top: -12px;
    left: 18px;
    background: #fff;
    padding: 0 10px;
    font-family: ui-monospace, monospace;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--container);
  }
  .container-label {
    text-align: center;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--muted);
    margin-bottom: 10px;
  }

  .track {
    display: grid;
    grid-template-columns: 90px 1fr;
    gap: 12px;
    align-items: center;
    background: var(--soft);
    border-left: 4px solid;
    border-radius: 6px;
    padding: 9px 14px;
    margin-bottom: 6px;
  }
  .track.video { border-left-color: var(--video); }
  .track.audio { border-left-color: var(--audio); }
  .track.subs  { border-left-color: var(--subs); }
  .track.meta  { border-left-color: var(--meta); }

  .track-label {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
  }
  .track.video .track-label { color: var(--video); }
  .track.audio .track-label { color: var(--audio); }
  .track.subs  .track-label { color: var(--subs); }
  .track.meta  .track-label { color: var(--meta); }

  .codec-pill {
    display: inline-block;
    font-family: ui-monospace, monospace;
    font-size: 0.82rem;
    background: #fff;
    border: 1px solid var(--border);
    padding: 2px 9px;
    border-radius: 4px;
    color: var(--dark);
  }

  .verdict {
    margin-top: 22px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    border: 2px solid var(--hl);
    border-radius: 12px;
    padding: 14px 22px;
  }
  .verdict-q { font-size: 1.1rem; font-weight: 700; color: var(--hl); }
  .verdict-a { font-size: 0.93rem; color: var(--dark); margin-top: 4px; }
  .verdict-a strong { color: var(--hl); }
  .verdict-a code { font-family: ui-monospace, monospace; background: var(--soft); padding: 1px 5px; border-radius: 4px; }
</style>
</head>
<body>
  <h1>Container ≠ Codec</h1>
  <div class="sub">Die <strong>Hülle</strong> sagt nichts darüber, <strong>wie</strong> der Inhalt komprimiert wurde.</div>

  <div class="scene">

    <div class="container-box">
      <span class="container-tag">.mp4</span>
      <div class="container-label">Datei A — älterer Stand</div>

      <div class="track video">
        <span class="track-label">Video</span>
        <span><span class="codec-pill">H.264 / AVC</span> · 1080p · 8 Mbit/s</span>
      </div>
      <div class="track audio">
        <span class="track-label">Audio</span>
        <span><span class="codec-pill">AAC</span> · 192 kbit/s · Stereo</span>
      </div>
      <div class="track subs">
        <span class="track-label">Untertitel</span>
        <span><span class="codec-pill">TTML</span> · de + en</span>
      </div>
      <div class="track meta">
        <span class="track-label">Metadaten</span>
        <span>Titel · Dauer · Datum · Bitrate</span>
      </div>
    </div>

    <div class="container-box">
      <span class="container-tag">.mp4</span>
      <div class="container-label">Datei B — modern</div>

      <div class="track video">
        <span class="track-label">Video</span>
        <span><span class="codec-pill">AV1</span> · 4K · 25 Mbit/s</span>
      </div>
      <div class="track audio">
        <span class="track-label">Audio</span>
        <span><span class="codec-pill">Opus</span> · 128 kbit/s · 5.1 Surround</span>
      </div>
      <div class="track subs">
        <span class="track-label">Untertitel</span>
        <span><span class="codec-pill">WebVTT</span> · de + en + ja</span>
      </div>
      <div class="track meta">
        <span class="track-label">Metadaten</span>
        <span>Titel · Dauer · Datum · HDR-Info</span>
      </div>
    </div>

  </div>

  <div class="verdict">
    <div class="verdict-q">Gleiche Endung. Anderes Innenleben.</div>
    <div class="verdict-a"><strong>Container</strong> = Verpackung (<code>.mp4</code>, <code>.mkv</code>, <code>.webm</code>). <strong>Codec</strong> = Komprimierer (H.264 / AV1 / AAC / Opus). <strong>Tool:</strong> <code>mediainfo &lt;datei&gt;</code> zeigt beides.</div>
  </div>
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