How To Know The Type Of Audio or Video File Downloaded Without File Extension

by Abhishek Bhatnagar on November 15, 2008



One of our readers reported a problem saying that

”I Downloaded a music file from internet and saved it without a file extension, it plays in media player with a warning, but how do I know the Extension of the file, how can I know the file extension? “

This is quite an interesting problem, and has a simple solution. Lets see how this happens.



The above warning is shown when you try to play such a file without an extension with Windows Media Player. The warning says “The selected extension that is not recognized by windows media player, but the player may still be able to play it. Because the extension is unknown by the player, you should be sure that the file comes from a trustworthy source Do you want the player to try to play this content?”

Now we tell u how to check such file extensions and rename them to avoid such error later again.


When you see the warning as shown above, click yes to continue. Now the file will play, if its a valid file. When it starts to play in media player, enable the side pane as shown in the snapshot below:



In the side pane, you will see the file name, which you are playing. Right click on the file and click on properties


This will show the file properties which will show you audio and video codec. That will tell you the file type. For example the file properties below show an audio file of MP3 type codec. Rename such files from <filename> to <filename>.mp3


Similarly if you see the file properties below, its a Windows Media Audio file, which should be renamed to a .wmv extension.


For more type of file extension, check out this page to find info about any extension.

If you like this article or this article helped you, you can +1 to recommend this article on google plus.

You can follow us on Twitter or join our Facebook Fan Page. If you have a question to ask us, submit your question at Answers By Trouble Fixers.

Looking for something else? Search here :

{ 2 comments… read them below or add one }

thakur November 5, 2009 at 12:54 am

I have downloaded file from one site. It plays with VLC successfuly.
In its properties file type is file.
It is not like avi, mpg or other formats.
please suggest so that i can play it in DVD Players or Capture in Pinnacle Studio.


Rajendra September 21, 2010 at 7:14 pm

I have record a voice in my mobile sony ericsson K750i but now i,m unable to listion this file on PC or Mobile
File size is showing but not showing file type;please suggest how know this file type of listion this voice recording.

Leave a Comment

Previous post:

Next post:

© TroubleFixers – All about fixing computer troubles2007-2016 . All Rights Reserved.