<p>I had a video file named file.mp4. I have tried many codecs/players to open it with no luck.</p>

<p>Finally, I used a hex-editor to open the file, and here is what i have found.</p>

<p>Any suggestions on how I can work with this file?</p>

<p><a href="https://i.sstatic.net/suRBV.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/suRBV.png" alt="enter image description here"></a></p>

CC BY-SA 4.0
2020-04-12T03:18:31.210Z
The file type (ftyp) in your header is "isom". Try https://superuser.com/questions/311595/change-mp4-ftyp-from-isom-to-mp42
Peter Barton
CC BY-SA 4.0
2020-04-12T07:57:35.213Z
Thank you Peter. Please post an answer, so I can flag it as the correct answer.
m.nasim
CC BY-SA 4.0
2020-04-12T10:31:16.087Z
It's fine - if I try to post that as an answer, the site comes back with "trivial answer converted to comment". So there you go! Glad that it worked, it was really just a quick look through - I thought there might still be more to it than what I posted.
Peter Barton
CC BY-SA 4.0
2020-04-12T10:33:41.557Z
Trivial, but very helpful.
m.nasim
<file-formats>
Unknown Video Format
m.nasim
# Unknown Video Format

(Asked by: username_0 on 2020-04-11)

I had a video file named file.mp4. I have tried many codecs/players to open it with no luck.

Finally, I used a hex-editor to open the file, and here is what i have found.

Any suggestions on how I can work with this file?

[![enter image description here](https://i.sstatic.net/suRBV.png)](https://i.sstatic.net/suRBV.png)

**Tags:** file-formats

> **Comments:**
> **username_1**: The file type (ftyp) in your header is "isom". Try https://superuser.com/questions/311595/change-mp4-ftyp-from-isom-to-mp42  
> **username_0**: Thank you Peter. Please post an answer, so I can flag it as the correct answer.  
> **username_1**: It's fine - if I try to post that as an answer, the site comes back with "trivial answer converted to comment". So there you go! Glad that it worked, it was really just a quick look through - I thought there might still be more to it than what I posted.  
> **username_0**: Trivial, but very helpful.  

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## 0 answers

