Fix common audio and video issues
Revision Information
- Revision id: 224668
- Created:
- Creator: AliceWyman
- Comment: removed keywords, pre-fx78 content
- Reviewed: Yes
- Reviewed:
- Reviewed by: AliceWyman
- Is approved? Yes
- Is current revision? No
- Ready for localization: No
Revision Source
Revision Content
Sometimes, the video or audio content in a web page cannot be properly downloaded and displayed in Firefox. This article will help you solve these problems.
Table of Contents
Allow autoplay of media with sound
Firefox may be blocking media with sound from playing automatically. To allow media autoplay, see Allow or block media autoplay in Firefox.
You may need to install the required PulseAudio software
If you see a notification saying "To play audio, you may need to install the required PulseAudio software", it means that Firefox cannot find or use PulseAudio. The PulseAudio software is required to play any audio from Firefox. Most Linux distributions now come with PulseAudio pre-installed.
Use your system's software package manager and ensure that PulseAudio is correctly installed.
HTML5 audio and video
Firefox has built in support for open media formats usually associated with MP3, WebM, Ogg and Wave containers. However, MP4 containers usually depend on platform decoders for AAC and H.264 audio and video streams. For more information, see Fix video and audio problems on Firefox for Windows N editions and HTML5 audio and video in Firefox.
Clear the cache
See How to clear the Firefox cache.
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.
- 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
- Cookies:
- In the Menu bar at the top of the screen, click and then select or , depending on your macOS version.Click the menu button and select .
- Select the panel and go to the Cookies and Site Data section.
- Verify that cookies are enabled and that the site is not blocked in the Exceptions list.
- History:
- In the Menu bar at the top of the screen, click and then select or , depending on your macOS version.Click the menu button and select .
- Select the panel and go to the History section.
- Make sure that Firefox is set to .
- Pop-up windows:
- In the Menu bar at the top of the screen, click and then select or , depending on your macOS version.Click the menu button and select .
- Select the panel and go to the Permissions section.
- Allow the website as an exception to the "Block pop-up windows" setting.
Reset preferences
See Reset Firefox preferences to troubleshoot and fix problems.
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)