Error message "Mpeg-4 AAC decoder not installed" when playing video on Ubuntu 18.04.3 in VirtualBox
The error message "Mpeg-4 AAC decoder not installed" typically indicates that your media player does not have the necessary codec to decode the audio in the video file. You can resolve this issue on Ubuntu 18.04 in VirtualBox by installing the appropriate codec and ensuring that your media player can use it. Here are the steps to follow: 1. **Install Ubuntu Restricted Extras:** - Open a terminal window. - Run the following command to install the "ubuntu-restricted-extras" package, which includes various codecs and fonts: ``` sudo apt-get install ubuntu-restricted-extras ``` - During the installation process, you may be asked to accept license agreements for some of the included codecs. Follow the prompts to agree. 2. **Restart Your Media Player:** - After installing the restricted extras, restart your media player (e.g., VLC) and try playing the video again. 3. **Use VLC Media Player:** If you're not already using VLC, consider instal