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HTML5 audio and video in Firefox
Firefox handles many types of audio and video content on web pages. This article explains which media formats you can play and how to control, save, and open them.
Since the use of certain audio and video file types is restricted by patents, a third-party application is required to use them. Firefox, however, is able to play natively open media and some types of patented media.
Open media
Firefox can play the WAVcontainer format (.wav, .wave file types) containing uncompressed audio in PCM at 8 or 16 bits per sample.
Vorbis audio, Opus audio, Theora video, and VP8 video are free audio/video compression formats for use without patent restrictions. They can be viewed in Firefox if they are embedded in the following container formats: Ogg (.ogg, .oga, .ogv, .ogx, .spx, .opus file types) or WebM (.webm file type).
Firefox also supports FLAC (Free Lossless Audio Codec) playback (.flac file type) and MP3 playback (.mp3 file type).
Control bar
When you visit a website that includes supported media, you will see controls for managing playback when you hold the mouse pointer over the media on the page.
Context menu controls
The context menu (accessible via right-clickCtrl-click) includes the above controls except the sliders, and also let you:
- Accelerate or reduce the playback rate: Select Play Speed and then one of the available speeds.
- Play video over and over: Select Loop so that the video will play over and over automatically.
- Hide controls: Select Hide Controls so that the bottom control bar never show up. To show them, select Show Controls.
Keyboard controls
After you click on the media on a web page, to give it focus, you can control the playback with your keyboard.
| Command | Shortcut |
|---|---|
| Toggle Play / Pause | Space bar |
| Decrease volume | ↓ |
| Increase volume | ↑ |
| Mute audio | Ctrl + ↓command + ↓ |
| Unmute audio | Ctrl + ↑command + ↑ |
| Seek back 15 seconds | ← |
| Seek back 10 % | Ctrl + ←command + ← |
| Seek forward 15 seconds | → |
| Seek forward 10 % | Ctrl + →command + → |
| Seek to the beginning | Home |
| Seek to the end | End |
To save an audio file from a web page to your computer:
- Right-clickHold down the control key while you click on the audio controls and select Save Audio As….
- Select a location on your computer to save the file.
To save a video file from a web page to your computer:
- Right-clickHold down the control key while you click on the video controls and select Save Video As….
- Select Save Snapshot As… if you only want to save the video snapshot.
- Select a location on your computer to save the file.
The media files you save from web pages may not play in your normal media player. To open these types of files:
- Open Firefox.
- Click Ctrl + Ocommand + O.
- Navigate to the folder that contains the file you want to play and click Open.
If you are having problems with audio or video files, see:
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