How to Fix Firefox Not Playing Videos (2023)

The Mozilla Foundation developed Mozilla Firefox as an open-sourced browser. It was released in 2003 and soon gained wide popularity because of its user-friendly interface and wide range of available extensions. However, the popularity of Firefox declined when Google Chrome was released. Since then, both have been giving tough competition to each other.

Firefox still has a loyal fan base who still prefer this browser. If you are one of them but feel frustrated due to the Firefox not playing videos issue, do not worry. Simply read on to know how to fix Firefox not playing videos.

Como consertar o Firefox que não reproduz vídeos

Why Firefox not playing videos error occurs?

There can be various reasons for this error to occur, namely:

• Outdated version of Firefox
• Firefox extensions & acceleration features
• Corrupt cache memory & cookies
• Disabled cookies & pop-ups

Before, doing any advance troubleshooting, you should first try to restart your PC and check if the Firefox not playing videos issue is resolved or not.

1. Vá para a Start menu > Power > Restart como descrito.

Once the computer has restarted, launch Firefox and check if videos are playing. Hopefully, the issue is resolved. If not, then continue with the below methods.

Método 1: atualizar o Firefox

If you have not installed the latest updates to Firefox, it may lead to issues when you try to play videos on this web browser. There might be bugs in your current version of Firefox, which an update might fix. Follow these steps to update it:

1. Lançamento Firefox browser and then open the cardápio clicando no botão three-dashed icon. Selecionar Ajuda como mostrado abaixo.

2. Em seguida, clique em Sobre o Firefox do seguinte modo.

3. In the new window that now opens, Firefox will check for updates. If no updates are available, the Firefox está atualizado message will be displayed as below.

4. If an update is available, Firefox will automatically install the update.

5. Por fim, restart o navegador.

If you still face the same issue, try the next fix.

Método 2: Desligue a aceleração de hardware

Aceleraçao do hardware is the process wherein certain hardware components are assigned specific tasks to enhance the functioning of a program. The hardware acceleration feature in Firefox provides convenience and speed, but it also might contain error-causing bugs. Therefore, you can try to disable hardware acceleration to potentially fix videos not loading Firefox issue as:

1. Lançamento Firefox e aberto o cardápio as before. Select Configurações, como mostrado na imagem abaixo.

2. Then, uncheck the box next to Use as configurações de desempenho recomendadas sob a Performance aba.

3. Next, uncheck the box next to Use aceleração de hardware quando disponível.

4. Por fim, restart Firefox. Check if Firefox can play videos.

Leia também: Como corrigir problema de tela preta do Firefox

Método 3: desabilitar extensões do Firefox

Add-ons that are enabled on the Firefox browser may be interfering with websites and not allowing videos to play. Follow the steps below to disable add-ons and fix Firefox no audio & not playing videos issue:

1. Lançamento Firefox ea sua cardápio. Aqui, clique em Complementos e temas conforme ilustrado abaixo.

2. Em seguida, clique em Extensões from the left pane to see the list of add-on extensions.

3. Clique no ícone três pontos next to each add-on and then select Eliminar. As an example, we have removed Enhancer para YouTube extension in the attached screenshot.

4. After removing the unwanted add-ons, restart the browser and verify if the issue is resolved.

If Firefox not playing videos problem persists, you can clear the browser cache and cookies as well.

Method 4: Delete Browser Cache and Cookies

If the cache files and cookies of the browser get corrupt, it can lead to Firefox not playing videos error. Here’s how to delete cache and cookies from Firefox:

1. Abrir Firefox. Vou ao Side menu > Settings as you did earlier.

2. Em seguida, clique em Privacidade e segurança from the left pane. It is indicated by a lock icon, como mostrado na imagem abaixo.

3. Em seguida, role para baixo até o Cookies e dados do site opção. Clique em Apagar os dados conforme destacado.

4. Next, check the boxes next to both, Cookies e dados do site e Conteúdo da Web em cache in the pop-up window that follows.

5. Por fim, clique em Limpar e Reiniciar the web browser.

Check if the above method worked to fix the issue of Firefox not playing videos. If not, move to the next solution.

Method 5: Allow Autoplay on Firefox

If you are facing the ‘Twitter videos not playing on Firefox’ problem, then it may be because Autoplay is not enabled on your browser. Here’s how to fix Firefox not playing videos error:

1.Visite o site do Network Development Group where videos are not playing using Firefox. Here, Twitter is shown as an example.

2. Em seguida, clique no Ícone de cadeado to expand it. Here, click on the sideward arrow conforme destacado abaixo.

3. Em seguida, selecione Mais informação como mostrado abaixo.

4. No Informações da página menu, vá para o Permissões aba.

5. Debaixo de Autoplay section, uncheck the box next to Use default.

6. Em seguida, clique em Allow Audio and Video. Refer to the image below for clarity.

Enable Autoplay for All Websites

You can also ensure that the Autoplay feature is allowed for all websites, by default, as follows:

1. Navegue até o Side menu > Settings> Privacy and Security conforme instruído em Método 4.

2. Role para baixo até Permissões and click on Autoplay Configurações, conforme destacado.

3. Here, ensure that Allow Audio and Video is enabled. If not, choose it from the drop-down menu as shown in the image below.

4. Finalmente, restart the browser. Check if the ‘videos not playing on firefox’ issue has been resolved. If it isn’t, read below.

Leia também: Corrigir erro de servidor não encontrado no Firefox

Method 6: Allow Cookies, History, and Pop-ups

Some websites require cookies and pop-ups to be allowed on your browser to stream data and audio-video content. Follow the steps written here to allow cookies, history, and pop-ups on Firefox:

Permitir Cookies

1. Lançamento Firefox navegador e navegue para Side menu > Settings > Privacidade e segurança como explicado anteriormente.

2. Debaixo de Cookies e dados do site seção, clique em Gerenciar exceções como descrito.

3. Here, make sure that no website is added to the list of exceptions to block cookies.

4. Move to the next step without leaving this page.

Allow History

1. On the same page, scroll down to the HISTÓRIA seção.

2. Choose to Remember History No menu suspenso.

3. Move to the next step without exiting the settings page.

Allow Pop-Ups

1. Volte para o Privacy and Security page ao Permissões seção.

2. Here, uncheck the box next to Bloquear janelas pop-up como mostrado abaixo.

Once the above steps have been executed, try to play videos on Firefox.

If the Firefox videos not playing issue persists, move to the succeeding methods to refresh Firefox and reboot your computer.

Método 7: atualize o Firefox

When you use the Refresh Firefox option, your browser will be reset, potentially fixing all minor glitches you are currently experiencing. Here’s how to Refresh Firefox:

1. No Firefox navegador, acesse o Side menu > Help, como mostrado abaixo.

2. Em seguida, clique em Mais Informação sobre solução conforme ilustrado abaixo.

3. Informação sobre solução page is displayed on the screen. Finally, click on Reiniciar Firefox, como mostrado abaixo.

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Esperamos que este guia tenha sido útil e que você tenha conseguido fix Firefox not playing videos issue. Also, let us know which method worked the best for you. Finally, if you have any questions or suggestions regarding this article, feel free to drop them in the comments section below.