To play video you may need to install the required video codec Firefox

1. Why can't I play videos in Firefox?
2. Why are CNN videos not playing in Firefox?
3. How do I fix a video codec?
4. How do I play MKV files on Firefox?
5. How do I play videos on Firefox?
6. Why video file is not opening?
7. How do I play CNN videos?
8. Why is Firefox blocking a website?
9. How do I manually install Firefox extensions?
10. How do I install a missing codec?
11. How do I open mkv files in Firefox?
12. Does Firefox allow extensions?
13. How to play video without codec?
14. Why do I need a codec to watch videos?
15. Why is my video file not playing?
16. Why are videos not playing on my browser?

Why can't I play videos in Firefox?

You may be using add-ons like extensions, themes, or plugins to customize your Mozilla Firefox browser. However, these add-ons can prevent website videos from loading in Firefox. Try to fix the video issue by disabling your Firefox add-ons ? extensions, themes, and plugins.

Why are CNN videos not playing in Firefox?

Clear cache and cookies, refresh, safe mode. Clearing everything in history worked for my wife's computer; prior to that she complained that no CNN videos would play. Make sure all the check boxes in the "Clear Recent History" menu option are checked, and you select "Everything" as the time period.

How do I fix a video codec?

The quickest way to fix not supported audio or video codec error on Android is by using the VLC Media Player app. VLC has extended codecs to play files such as MKV, MOV, WMV, etc. However, other ways exist to play the video in the native Android player.

How do I play MKV files on Firefox?

Yes, it's possible to play videos (mkv, mp4, ogg, etc) with the modern browser without a plugin. You can do that by using "video" tag. Support matrix for the different browsers here; on the sub-feature tab are listed supported video/audio formats and their support matrix across the browsers.

How do I play videos on Firefox?

Enabling and disabling video autoplay

Tap this icon to change view the settings for that site. Click Block audio and video and select the option for autoplay you want to use. You can visit Settings to change autoplay settings to Firefox for Android from automatically playing videos/audio when you visit a website.

Why video file is not opening?

If you can't open video files on your computer, you might need additional software or new codecs. If streaming videos, like the ones you watch on YouTube, are buffering and not playing as they should, the problem must be browser settings or poor Internet connection.

How do I play CNN videos?

In the CNN app, CNNgo app or go.cnn.com, choose Live TV or Watch TV (Fire Tablet) to stream live CNN TV channels. Choose Shows to watch a selection of CNN Original Series and Films on demand.

Why is Firefox blocking a website?

You are probably using an extension or a plugin which blocks certain content such as images & videos or advertisements. It may also be possible that your plugin is not updated and therefore firefox shows a red mark and asks you again, if its safe to play.

How do I manually install Firefox extensions?

With Firefox open, hit Ctrl+ o (or Cmd+ o) > browse to the extension > double click the extension (or select Open) > Install Now. Method: Press Alt + f > o > browse to the extension > double click the extension (or select Open) > Install Now.

How do I install a missing codec?

Select the Player tab in Windows Media Player. Check the box Download codecs automatically, and then click OK. Reopen the video file in Windows Media Player. If you're prompted to install the codec, select Install.

How do I open mkv files in Firefox?

Yes, it's possible to play videos (mkv, mp4, ogg, etc) with the modern browser without a plugin. You can do that by using "video" tag. Support matrix for the different browsers here; on the sub-feature tab are listed supported video/audio formats and their support matrix across the browsers.

Does Firefox allow extensions?

Expanded extension support in Firefox for Android Nightly

If using Firefox for Android Nightly, you are able to install any extension listed on addons.mozilla.org (AMO) in Nightly.

How to play video without codec?

Use Another Video Player. If you don't want to install a new codec to play the video, you can use another video player like VLC media player, PotPlayer, etc.

Why do I need a codec to watch videos?

A codec compresses or decompresses media files such as songs or videos. Windows Media Player and other apps use codecs to play and create media files. A codec can consist of two parts: an encoder that compresses the media file (encoding) and a decoder that decompresses the file (decoding).

Why is my video file not playing?

Reason 1: The media player you are using is not compatible with the format. Reason 2: There could be a codec issue. Reason 3: The MP4 file that you have downloaded could be broken. These are the most common reasons why you may end up looking for how to fix corrupt video files MP4 solutions.

Why are videos not playing on my browser?

The easiest and fastest way to fix Chrome not playing videos is to ensure that Chrome is completely updated and restarted. If updating doesn't work, try clearing your cache and enabling Adobe Flash or Javascript.