We got this message from A 8525 user named DarkShadows:
I am at a loss. I uploaded my videos from my 8525 (which play fine on the phone) to save space. But they will not play on my windows machine. I am trying to play them using Quicktime.
Two types of extensions are present mp4 & 3gp. the 3gp plays in Quicktime but the mp4 doesn’t play. I downloaded VCLan and it played them but with no audio, which is present when it is played on the phone. The Mp4 gives me this error message: Error -2401: an invalid sample description was found in the movie.
Any ideas? I got this wicked video of this chick from last weekend. Hook me up!
We sure do DarkShadows! And this one is a really easy fix! The MP4 file that windows media is producing is not actually a MP4 file format AT ALL! It is actually a 3GP file and if you simply rename your files extension from MP4 to 3GP it will work.
That’s all you have to do.
No really, unless you want me to give you some busy work to go along with that! :)
Discussion (31) ¬
can you pls tell me why i cant play mp4 on my laptop i have windows (vista pre)but when i try to play sum files they will not play.
Did you read the above article? It is simply a file format issue. Just rename the .mp4 file to .3gp and you will be good to go!
I too am having this same problem, however I have tried many times to rename this file but it still does not work. I have gone to the properties of this file and it says that it is indeed an .mp4 file, I just can’t seem to figure out the solution to changing it. Im not the smartest with computers so hopefully it is just something I missed. Please Help.
you need to rename the extension. The extension is currently mp4 it needs to be 3gp. Let me know if you need further help.
Most people out there heard about 3GP files but the truth is that few really know how to play this format and when faced with the need to watch 3GP they do not know what to do. That is when tutorials are researched and we try to learn how to do it. Let us see what we are dealing with and this will be the only tutorial you will ever need on playing 3GP files.
3GP is a file format that is a container for video and audio streams. It basically stores streams of video and audio in one file with the extension: .3GP. The video inside the container is usually MPEG-4 Part 2 at H.264 or H.263. The audio stream is usually AAC or AMR. In most situations 3GP files will be found on mobile phones as it is a popular file format to record video
how do you make a .3gp file on your computer
I have tried to rename the extension also without success on Vista. When I do the file name becomes runningdog.3gp.mp4
Don’t know what else to do.
Well I just figured out that the file extenstions were hidden…problem solved.
Glad it worked out Terri! Thanks for stopping by.
Great…
tell us how to…
Steep by steep…
Like were idots…
or tell us where you’ve already writin this “obvious” bit of information.
or give us the link of some who will tell us.
Because repeating/refrazing the information you’ve already told us dosn’t seem to be helping.
simply rename your files extension from MP4 to 3GP
Right click the file and choose rename – then make the mp4 extension 3gp and thats it. I can not make it any easier.
Except we tride that. Now, instead of FileName.mp4, we have FileName.3gp.mp4 and when we try to open that, it gives us the same error message. I’m sorry but there is some difference between your computer and ours thats not leting us change the file extention with a simpple rename.
Nevermind, sorry, downloaded a converter now, problem solved.
You have to go to Tools- folder options and turn off hide file extensions. Then you can safely rename the extension.
error: -2041 an invalid sample description was found in the movie…I seen above responses, but I don’t know how to rename the file, much less rename mp4 file extensions to 3gp…please exlain how this is done. I have a PC Wnidows 2007 XP oper sys.
what converter was downloaded…renaming file still didn’t work?
I did the fix file extension error…it didn’t work. Please help :(
what converter did you download?
thanks. this worked for me, too
dosen’t work for n96 mp4 movies, still searching ..
Worked like a champ on my mp4 files! Thank you!
thanks. this worked for me, too
none of this works. at all.
hei please…i have old computer that does’t not support mp4….do i have to download the drives?
Install an app that plays them. VLC player will work! iTunes plays mp4 as well
To change the file extension you have to see the file extension at the end of your video file for example: (sucker punch.mp4)
If you cannot see this file extension Simply navigate to your
“control panel” (For windows vista & 7 users)
Click on “appearance and personalization”
Then navigate to the folder that says “folder option”
In the “folder options” menu click on the “view” tab
Now in the view options uncheck the box that says “Hide extensions for known file types” After you’ve unchecked that box you should be able to see the extension for your video file resembling the example above (.mp4, .avi, .3gp)
Now that you can see the file extension change it to whatever you want like so:
sucker punch.mp4 (change .mp4 to .3gp) then you’ll have
sucker punch.3gp Hope that helped
Thanks Andre!
Thanks to your comments Karl I was able to elaborate a little More. Thank you!
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I changed the extension from .mp4 to .3gp ,, Still not working :/ dont know what to do!!? any help?