Cannot read avi file from pendrive

Posted on 2009-12-28
Last Modified: 2012-05-08

I'm trying to play an avi file from a pendrive (FAT32) however I get an error in Windows Classic Player: "cannot render the file".

The same file plays fine from the local hard disk.

Any clues why this happens? I tried the pendrive on another pc and a dvd player - same problem.

Question by:Rassac
    LVL 35

    Expert Comment

    I usually get that error with Media Player Classic when a file is truncated/incomplete.
    Could it be the file is larger than 4 GB? Then you may have hit the FAT32 file size limit, and it wasn't completely copied over.

    Some things you could try:
    - check if VLC is able to render the file
    - delete and recopy
    - create a checksum of the file on HDD, and compare it to the sum of the copied file. Are they identical?
    - reformat the pendrive / run chckdisk on it

    Author Comment

    Well, the files are around 750mb. I checked the file size on my HDD and on my pendrive and they are identical. I tried VLC as well but not luck. Also deleted and re-copied the file.

    How do I run a checksum please? Do I need a specific software?

    LVL 35

    Expert Comment

    I attached a free checksum tool for Windows. It's from this Sourceforge project:
    I only removed all the source code files. There is a version for 32x and 64x bit Windows.
    It's not extremely intuitive; use MD5 or SHA1, run it on both versions of a file, copy the first checksum to the clipboard, then enter it in the second list box, and let the tool compare for you.
    If there is the tiniest "bit" of difference between those files, the checksum will show.

    Author Comment

    Files seem to be Ok... I ran check disk and half way through I got the error message: "unable to continue disk check". Does that mean I have to re-format?
    LVL 35

    Accepted Solution

    Yes, that's what I would do. If that doesn't help, start to consider a faulty/corrupted pendrive.

    I remember there have also been lots of cases where pendrive vendors sold "pimped up" pendrives that reported to have far more space than they physically had. These drives generally aren't much use. I also remember that I once came across a tool which could detect the real capacities of such drives, but I'm not sure if I'll manage to find it again.
    LVL 35

    Expert Comment

    I found the tool: h2testw
    Download it from here:

    Please make sure to read the Readme file before using it (on a formatted pendrive), and please do *not* use it on any other drives, especially not your system drive.
    If yours is a fake pendrive, this should be detected.

    Featured Post

    Highfive Gives IT Their Time Back

    Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

    Join & Write a Comment

    Is it worth it to buy an Echo? In a word, yes! For me it was definitely worth it. I use mine on a daily basis. Prologue & Privacy At first, I was very skeptical about the Amazon Echo. In general, I don't like voice assistants. I don't li…
    In the modern office, employees tend to move around the workplace a lot more freely. Conferences, collaborative groups, flexible seating and working from home require a new level of mobility. Technology has not only changed the behavior and the expe…
    Hi everyone! This is Experts Exchange customer support.  This quick video will show you how to change your primary email address.  If you have any questions, then please Write a Comment below!
    Access reports are powerful and flexible. Learn how to create a query and then a grouped report using the wizard. Modify the report design after the wizard is done to make it look better. There will be another video to explain how to put the final p…

    729 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    19 Experts available now in Live!

    Get 1:1 Help Now