SMIL file icon

SMIL File Extension

SMIL Presentation Format
  • Developer
    SYMM Working Group
  • Category
  • Popularity
    3.1 (6 votes)

What is SMIL file?

SMIL is a file extension commonly associated with SMIL Presentation Format files. SMIL Presentation Format specification was created by SYMM Working Group. SMIL file format is compatible with software that can be installed on Linux, Mac OS, Windows system platform. SMIL file format, along with 546 other file formats, belongs to the Video Files category. RealPlayer supports SMIL files and is the most frequently used program to handle such files, yet 8 other tools may also be used. Software named RealPlayer was created by RealNetworks, Inc.. In order to find more detailed information on the software and SMIL files, check the developer’s official website.

Programs which support SMIL file extension

The list that follows enumerates programs compatible with SMIL files, divided into 3 categories based on operating system on which they are available. SMIL files can be encountered on all system platforms, including mobile, yet there is no guarantee each will properly support such files.

Programs that support SMIL file

How to open file with SMIL extension?

Problems with accessing SMIL may be due to various reasons. What is important, all common issues related to files with SMIL extension can be resolved by the users themselves. The process is quick and doesn’t involve an IT expert. The list below will guide you through the process of addressing the encountered problem.

Step 1. Download and install RealPlayer

Install software to open SMIL file The main and most frequent cause precluding users form opening SMIL files is that no program that can handle SMIL files is installed on user’s system. This one is an easy one. Select RealPlayer or one of the recommended programs (for example, ACDSee, QuickTime Player, KMPlayer) and download it from appropriate source and install on your system. Above you will find a complete listing of programs that support SMIL files, classified according to system platforms for which they are available. One of the most risk-free method of downloading software is using links provided by official distributors. Visit RealPlayer website and download the installer.

Step 2. Verify the you have the latest version of RealPlayer

Update software that support file extension SMILIf you already have RealPlayer installed on your systems and SMIL files are still not opened properly, check if you have the latest version of the software. Sometimes software developers introduce new formats in place of that already supports along with newer versions of their applications. The reason that RealPlayer cannot handle files with SMIL may be that the software is outdated. The latest version of RealPlayer should support all file formats that where compatible with older versions of the software.

Step 3. Assign RealPlayer to SMIL files

After installing RealPlayer (the most recent version) make sure that it is set as the default application to open SMIL files. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.

Associate software with SMIL file on Windows

Selecting the first-choice application in Windows

  • Choose the Open with entry from the file menu accessed by right-mouse clicking on the SMIL file
  • Select Choose another app → More apps
  • To finalize the process, select Look for another app on this PC entry and using the file explorer select the RealPlayer installation folder. Confirm by checking Always use this app to open SMIL files box and clicking OK button.
Associate software with SMIL file on Mac

Selecting the first-choice application in Mac OS

  • Right-click the SMIL file and select Information
  • Proceed to the Open with section. If its closed, click the title to access available options
  • Select RealPlayer and click Change for all...
  • Finally, a This change will be applied to all files with SMIL extension message should pop-up. Click Continue button in order to confirm your choice.

Step 4. Check the SMIL for errors

You closely followed the steps listed in points 1-3, but the problem is still present? You should check whether the file is a proper SMIL file. It is probable that the file is corrupted and thus cannot be accessed.

Check SMIL file for viruses
1. The SMIL may be infected with malware – make sure to scan it with an antivirus tool.

If the SMIL is indeed infected, it is possible that the malware is blocking it from opening. Scan the SMIL file as well as your computer for malware or viruses. SMIL file is infected with malware? Follow the steps suggested by your antivirus software.

2. Ensure the file with SMIL extension is complete and error-free

Did you receive the SMIL file in question from a different person? Ask him/her to send it one more time. During the copy process of the file errors may occurred rendering the file incomplete or corrupted. This could be the source of encountered problems with the file. When downloading the file with SMIL extension from the internet an error may occurred resulting in incomplete file. Try downloading the file again.

3. Check if the user that you are logged as has administrative privileges.

Some files require elevated access rights to open them. Log out of your current account and log in to an account with sufficient access privileges. Then open the SMIL Presentation Format file.

4. Check whether your system can handle RealPlayer

The operating systems may note enough free resources to run the application that support SMIL files. Close all running programs and try opening the SMIL file.

5. Check if you have the latest updates to the operating system and drivers

Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with SMIL Presentation Format files. It is possible that one of the available system or driver updates may solve the problems with SMIL files affecting older versions of given software.

Do you want to help?

If you have additional information about the SMIL file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on SMIL file.

Top File Extensions
Show more
File Extension of the day
rar icon


WinRAR Compressed Archive

Files with the .RAR extension contain data archives compressed with a proprietary algorithm. This format was developed in its initial version in th...

Last updated