Big Blue Button - hodnocení webinářové platformy

Úvod

V následujícím článku, vzniklém pro předmět VIKMB33 - Laboratoř vzdělávacích technologií, zhodnotím jednu z mnoha dostupných webinářových platforem, Big Blue Button, z hlediska využití při (především akademickém) vzdělávání. Hlavními kritérii mi budou její funkce, použitelnost pro přednášející i uživatele a další související hlediska jako dostupná dokumentace. Srovnávat ji budu především s Adobe Connect, kterou využívá i KISK a se kterou jsem měl možnost se seznámit.

Volba platformy

Big Blue Button jsem si zvolil namátkou, chtěl jsem pouze, aby šlo o platformu, která nebyla zmíněna ve výuce, a která zdarma poskytuje alespoň základní potřebné funkce. Přihlížel jsem také k tomu, že je o open source a je prezentována jako zaměřená na univerzitní vzdělávání.

Na webu bigbluebutton.org je k dispozici i ukázková místnost, ve které je možné všechny funkce si vyzkoušet.

O platformě

 

Jde o open-source projekt (LGPL), založený v roce 2007 na univerzitě Carleton v Ottawě. Název je odvozený od snahy o co největší jednoduchost – začít webinář by mělo být stejně jednoduché, jako zmáčknout velké modré tlačítko.

Pro zakládání místností je potřeba spustit vlastní server. Ten běží na Ubuntu 10.04 64-bit, je možné ho spustit i jako Virtual Machine. PC klient pro přednášející a účastníky vyžaduje pouze prohížeč s Adobe Flash.

Funkce

  • Správa uživatelů
  • Chat a soukromé zprávy, hlášení se o slovo
  • Hlasová komunikace (přednášející i účastnící)
  • Sdílení webkamery (přednášející i účastnící)
  • Sdílení prezentace a dokumentů (PDF, MS Office)
  • Whiteboard s kreslením, popisky a dalšími funkcemi
  • Sdílení plochy
  • Přednastavené upravitelné layouty
  • Nahrávání (pomocí API)
  • API (integrace do WordPress, Drupal…)

Do budoucna je plánováno zavedení dalších funkcí, především test funkčnosti všech potřebných technologií před připojením k webináři a režim celé obrazovky. Chystá se také HTML 5 klient, podpora pluginů, podpora mobilních systémů iOS a Android a integrace s formátem H.323.

Počet funkcí je ve srovnání s některými konkurenčními systémy o něco nižší, schází například pokročilejší možnosti interakce s účastníky (ankety…) a pokročilejší autentizace účastníků.

Rozhraní přednášejícího v Big Blue Button – vlevo správa uživatelů, ovládání hlasu a webkamery, uprostřed prezentace a whiteboard, vpravo chat.

Použitelnost

Přednášející i účastníci přistupují k webináři pomocí prohlížeče, potřebují pouze plugin Adobe Flash. Systém je v současnosti dostupný pouze na PC. Pro přednášející a účastníky existují na oficiálním webu srozumitelné videonávody, které je provedou všemi funkcemi.

Doporučený počet uživatelů v jedné místnosti je 25, přestože maximální není nijak omezen a závisí na serveru.

Založení vlastního serveru a jeho správa vyžaduje určité technické znalosti (systém nemá vlastní administraci), k dispozici jsou ale videonávod a důkladná dokumentace.

Samotný systém má velmi snadné a intuitivní ovládání, i k pokročilejším funkcím je možné se dostat dvěma až třemi kliknutími a rozmístění tlačítek je logické. Po zhlédnutí tutoriálu by nemělo pro průměrně schopného uživatele představovat problém.

Další otestování funkčnosti by vyžadovalo zprovoznění systému na vlastním stroji a důkladné otestování, takto nemůžu vyhodnotit potenciální technické problémy. Z oficiální testovací mísnosti se ale zdá, že by vše mělo fungovat, jak má.

Závěr

Big Blue Button je otevřená webinářová platforma, která vyniká především dostupností zdarma a uživatelskou přívětivostí. Podporuje všechny nejnutnější funkce, a přestože některé pokročilejší možnosti postrádá, jejich přidávání by mohlo ublížit současné jednoduchosti systému.

Troufnu si dokonce říci, že pokud scházející funkce oželíte, není důvod platit za komerční systém, jako je Adobe Connect. Big Blue Button se mu vyrovná a především v oblasti uživatelské přívětivosti ho výrazně předčí.

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