As vezes, um conteúdo de áudio e vídeo numa página da web pode não ser baixado e exibido corretamente no Firefox. Um determinado plugin pode não estar instalado, desatualizado, bloqueado, em conflito com outro plugin ou extensão, ou ainda o conteúdo pode estar bloqueado por alguma razão. Este artigo vai te ajudar a resolver esses problemas. __TOC__ = Plugins = {for win,mac} ==Vídeos em Flash nunca são executados == Se vídeos em Flash aparecerem na cor preta, branca ou cinza e nunca serem executados, veja [[Flash 11.3 não carrega meu vídeo no Firefox]]. {/for} == Instalando o plugin necessário == Embora o Firefox possa exibir alguns tipos de medias em páginas de web tais como imagens e [[Viewing HTML5 audio and video in Firefox#w_what-is-open-media|medias open source]] como vídeos no formato Ogg e WebM por exemplo, as vezes é necessário instalar um plugin para executar um determinado áudio, vídeo ou conteúdo. No entanto você deve ter o tocador de media correto instalado para executar esse tipo de arquivo, caso contrário, os conteúdos embutidos nas páginas da web solicitarão um plugin para executá-los. Quando estiver faltando um plugin, faça o seguinte: # Clique no link para download.<br>[[Image:Plugin Needed]] # Siga as instruções. Caso a instalação falhe, instale manualmente. * '''Plugin do Flash''': Veja [[Instale o plugin do Flash para ver vídeos, animações e exeutar jogos]] e [[sempre mantenha-o atualizado para evitar problemas]] ** O plugin do Flash é usado por muitos tipos de vídeos e áudios imbutidos nas páginas de web, incluindo o YouTube.com. * '''Plugin do Java''': [[Use o plugin do Java para interagir com conteúdos na web]] * '''Plugin do Silverlight''': Veja [[Use o plugin do Silverlight para executar áudios e vídeos]] * '''Plugin do Windows Media Player''': Veja [[Execute arquivos do Windows Media no Firefox com o plugin do Windows Media Player]] ** O plugin do Windows Media Player executará poucos e específicos arquivos recohecidos pelo Windows (.asf, .asx, .wm, .wma, .wax, .wmp, .wmv, and .wvx) a não ser que a página da web seja projetada especialmente para o Firefox e outros navegadores da Mozilla. O Internet Explorer usará o plugin do Windows Media Player para executar outros formatos como mp3 e midi, porém o Firefox vai exigir outro plugin, como por exempl o plugin do QuickTime. * '''Plugin do QuickTime''': Veja [[Use o plugin do QuickTime para executar áudios e vídeos]] ** The QuickTime plugin can handle many different types of embedded media. On older operating systems, the QuickTime plugin may not be configured to handle some common file formats found online, such as embedded .mp3 audio on Windows XP{for not fx17} or Mac OS X 10.5 and below{/for}. In such cases, you need to select the media formats you want QuickTime to play in Firefox in your QuickTime Preferences. For other, less common, media players and their plugins, see these websites: *[http://www.adobe.com/products/shockwaveplayer/ Shockwave] *[http://www.real.com/ RealPlayer] *[http://www.videolan.org/ VLC] == Update your plugins == Check that you have the latest versions of all your plugins. *Go to our [https://www.mozilla.org/plugincheck Plugin Check] page and follow the links to update any plugins that are out of date. == Allow Plugin Container in your Internet security program == Allow your Internet security software (including firewalls, antivirus programs, anti-spyware programs, and more) to trust [[What is plugin-container|plugin-container.exe]] also known as Plugin Container for Firefox. For detailed instructions, see [[Configure firewalls so that Firefox can access the Internet]] where in this case Firefox means Plugin Container for Firefox. == Disable a conflicting plugin == If you have more than one plugin installed that can handle the same [http://en.wikipedia.org/wiki/Internet_media_type media type], this can cause a conflict that prevents some embedded media from playing. You may be able to fix the issue by disabling one of the plugins. #[[T:Open Add-ons|type=Plugins]] #In the list of plugins, select the plugin you wish to troubleshoot. #*If you want to disable the plugin, click the {button Disable} button. #*If you want to re-enable the plugin, click the {button Enable} button For example, you may need to disable the VLC plugin to play embedded QuickTime or Windows Media content. For more information about troubleshooting problems caused by plugins, see the [[Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems]] article. = Other solutions = == Clear the cache == See [[Clear the cache - Delete temporary Internet files to fix common website issues]]. <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=594327 --> == Disable interfering extensions or ad-blocking software == * Ad-blocking software, such as anti-banner filters of your Internet Security program, or extensions, such as Flashblock or Adblock Plus, can prevent audio or video content from playing. If the site works with ad-blocking disabled, you may want to add the site to your whitelist in your adblocker filter. * Any Firefox extension can also block plugins. If the video or audio plays when you disable all extensions, then one of your extensions was causing the problem. For more information, see [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems]]. == Check some Firefox settings == * Verify that cookies are enabled in the [[Settings for privacy, browsing history and do-not-track|'''Privacy''' panel in the {for win}Options{/for}{for mac,linux}Preferences{/for} window]]. Verify that the site is not blocked in the Cookie Exceptions list. * Allow the website as an exception in the Firefox pop-up blocker. The "Block pop-up windows" option is found in the [[Settings for fonts, languages, pop-ups, images and JavaScript|'''Content''' panel of the {for win}Options{/for}{for mac,linux}Preferences{/for} window]]. *Verify that JavaScript is enabled in the [[Settings for fonts, languages, pop-ups, images and JavaScript|'''Content''' panel of the {for win}Options{/for}{for mac,linux}Preferences{/for} window]]. <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=449358 --> == Remove specific entries in the hosts file (advanced users) == If you use a [http://en.wikipedia.org/wiki/Hosts_%28file%29 hosts file], you can temporarily disable it by renaming it {filepath Xhosts}. Or, you can edit the hosts file to remove specific entries such as '''ad.doubleclick<!-- -->.net''' that can cause videos on certain sites to fail (for more information, see this [http://forums.mozillazine.org/viewtopic.php?p=2862303#2862303 MozillaZine forum thread]). To apply changes to your hosts file, you may need to flush the DNS cache{for win} by entering the command: <code>ipconfig /flushdns</code> in the Run dialog box on Windows{/for}. <!-- MZ credit --> <br/> <br/> '''''Based on information from [http://kb.mozillazine.org/Video_or_audio_does_not_play Video or audio does not play (mozillaZine KB)]''''' [[Template:ShareArticle|link=http://mzl.la/LL9mLw]]

As vezes, um conteúdo de áudio e vídeo numa página da web pode não ser baixado e exibido corretamente no Firefox. Um determinado plugin pode não estar instalado, desatualizado, bloqueado, em conflito com outro plugin ou extensão, ou ainda o conteúdo pode estar bloqueado por alguma razão. Este artigo vai te ajudar a resolver esses problemas.

Plugins

Instalando o plugin necessário

Embora o Firefox possa exibir alguns tipos de medias em páginas de web tais como imagens e medias open source como vídeos no formato Ogg e WebM por exemplo, as vezes é necessário instalar um plugin para executar um determinado áudio, vídeo ou conteúdo. No entanto você deve ter o tocador de media correto instalado para executar esse tipo de arquivo, caso contrário, os conteúdos embutidos nas páginas da web solicitarão um plugin para executá-los.

Quando estiver faltando um plugin, faça o seguinte:

1. Clique no link para download.
   
2. Siga as instruções.

Caso a instalação falhe, instale manualmente.

• Plugin do Flash: Veja Instale o plugin do Flash para ver vídeos, animações e exeutar jogos e sempre mantenha-o atualizado para evitar problemas
  • O plugin do Flash é usado por muitos tipos de vídeos e áudios imbutidos nas páginas de web, incluindo o YouTube.com.
• Plugin do Java: Use o plugin do Java para interagir com conteúdos na web
• Plugin do Silverlight: Veja Use o plugin do Silverlight para executar áudios e vídeos
• Plugin do Windows Media Player: Veja Execute arquivos do Windows Media no Firefox com o plugin do Windows Media Player
  • O plugin do Windows Media Player executará poucos e específicos arquivos recohecidos pelo Windows (.asf, .asx, .wm, .wma, .wax, .wmp, .wmv, and .wvx) a não ser que a página da web seja projetada especialmente para o Firefox e outros navegadores da Mozilla. O Internet Explorer usará o plugin do Windows Media Player para executar outros formatos como mp3 e midi, porém o Firefox vai exigir outro plugin, como por exempl o plugin do QuickTime.
• Plugin do QuickTime: Veja Use o plugin do QuickTime para executar áudios e vídeos
  • The QuickTime plugin can handle many different types of embedded media. On older operating systems, the QuickTime plugin may not be configured to handle some common file formats found online, such as embedded .mp3 audio on Windows XP or Mac OS X 10.5 and below. In such cases, you need to select the media formats you want QuickTime to play in Firefox in your QuickTime Preferences.

For other, less common, media players and their plugins, see these websites:

• Shockwave
• RealPlayer
• VLC

Update your plugins

Check that you have the latest versions of all your plugins.

• Go to our Plugin Check page and follow the links to update any plugins that are out of date.

Allow Plugin Container in your Internet security program

Allow your Internet security software (including firewalls, antivirus programs, anti-spyware programs, and more) to trust plugin-container.exe also known as Plugin Container for Firefox. For detailed instructions, see Configure firewalls para que o Firefox possa acessar a internet where in this case Firefox means Plugin Container for Firefox.

Disable a conflicting plugin

If you have more than one plugin installed that can handle the same media type, this can cause a conflict that prevents some embedded media from playing. You may be able to fix the issue by disabling one of the plugins.

1. Clique no menu , clique em Extensões e temasExtensões e temas e selecione Plugins.
2. In the list of plugins, select the plugin you wish to troubleshoot.
   • If you want to disable the plugin, click the Disable button.
   • If you want to re-enable the plugin, click the Enable button

For example, you may need to disable the VLC plugin to play embedded QuickTime or Windows Media content. For more information about troubleshooting problems caused by plugins, see the Soluções de problemas com plugins como Flash ou Java article.

Other solutions

Clear the cache

See Como limpar o cache do Firefox.

Disable interfering extensions or ad-blocking software

• Ad-blocking software, such as anti-banner filters of your Internet Security program, or extensions, such as Flashblock or Adblock Plus, can prevent audio or video content from playing. If the site works with ad-blocking disabled, you may want to add the site to your whitelist in your adblocker filter.
• Any Firefox extension can also block plugins. If the video or audio plays when you disable all extensions, then one of your extensions was causing the problem. For more information, see Solucione problemas com extensões, temas e aceleração de hardware para resolver problemas comuns no Firefox.

Check some Firefox settings

• Verify that cookies are enabled in the Privacy panel in the OptionsPreferences window. Verify that the site is not blocked in the Cookie Exceptions list.
• Allow the website as an exception in the Firefox pop-up blocker. The "Block pop-up windows" option is found in the Content panel of the OptionsPreferences window.
• Verify that JavaScript is enabled in the Content panel of the OptionsPreferences window.

Remove specific entries in the hosts file (advanced users)

If you use a hosts file, you can temporarily disable it by renaming it Xhosts. Or, you can edit the hosts file to remove specific entries such as ad.doubleclick.net that can cause videos on certain sites to fail (for more information, see this MozillaZine forum thread). To apply changes to your hosts file, you may need to flush the DNS cache by entering the command: ipconfig /flushdns in the Run dialog box on Windows.

Based on information from Video or audio does not play (mozillaZine KB)