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Windows 7: The .mp7 file format

05 Mar 2011   #1

windows 7 Home Premium 64 Bit
 
 
The .mp7 file format

I've just recently come across an .mp7 video file and when googling it, found some people saying that you should rename the .mp7 to either .avi or .mpg. Searching .mp7 here came up with no results so, I thought I'd post this to help anyone who comes across apparently a rare file type.
Although renaming the file to .avi or .mpg still plays the video, it doesn't display a video thumbnail. So I renamed it instead to .mp4 and this displays the thumbnail and plays the video.

Do note I'm only posting this as there is no thread on sevenforums on the .mp7 file.
Hope this becomes useful to someone!

My System SpecsSystem Spec
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05 Mar 2011   #2

Windows 7 Home Premium x64
 
 

This would not always work.
I've never heard of .mp7 either, but I would assume that someone simply used a random container/extension to wrap the streams in.
If the video was, for example, XviD or something, I bet your solution wouldn't work. In these cases, MediaInfo is the best possible way to find out which streams are contained in the file, and remux the streams properly.
My System SpecsSystem Spec
11 Mar 2011   #3

windows 7 Home Premium 64 Bit
 
 

Thank you for your reply,

I have noticed since posting this thread that it doesn't always work to rename the extension, however It could be that I was lucky enough to guess the extension that would both play the video file and give a thumbnail for it.
The reason I posted the thread was so that any body with information like yours could comment and, that anything I tried and found out might work for others.

Quote   Quote: Originally Posted by Gornot View Post
This would not always work.
I've never heard of .mp7 either, but I would assume that someone simply used a random container/extension to wrap the streams in.
If the video was, for example, XviD or something, I bet your solution wouldn't work. In these cases, MediaInfo is the best possible way to find out which streams are contained in the file, and remux the streams properly.
My System SpecsSystem Spec
.


11 Mar 2011   #4

Windows 7 Home Premium x64
 
 

Yeah, most likely you were just lucky
My System SpecsSystem Spec
15 Mar 2011   #5

windows 7 Home Premium 64 Bit
 
 

Well I'm glad I had that luck haha, the files were pretty big would have been a waste to use 2-3gb of data just to delete them all!

Quote   Quote: Originally Posted by Gornot View Post
Yeah, most likely you were just lucky
My System SpecsSystem Spec
24 Mar 2011   #6

Windows 7 Ultimate x64
 
 

I think it is an ordinary mp4 file only renamed to mp7.
You might try renaming it to mp4.

if it contains avc and aac it is most probably mp4.
My System SpecsSystem Spec
24 Mar 2011   #7

Windows 7 Ultimate 32 Bit, Windows Developer Preview, Linux Mint 9 Gnome 32 Bit
 
 

You know, there are lots of file types that get into a computer right now like when you install a program or something, there are these file types you can see on the Registry that you never knew existed, you don't know what can open them and Googling them does not show up much results.

If we do have the MP3 and the MP4 as existing media formats now, maybe in the future we'll have an MP7 media format that delivers super high definition sound and audio for your desires but has a hefty huge file size.
My System SpecsSystem Spec
25 Mar 2011   #8

windows 7 Home Premium 64 Bit
 
 

I have successfully renamed them to popular media formats and it has so far worked, haven't come across an mp7 file for a good while now though

Quote   Quote: Originally Posted by FlankerB View Post
I think it is an ordinary mp4 file only renamed to mp7.
You might try renaming it to mp4.

if it contains avc and aac it is most probably mp4.
My System SpecsSystem Spec
25 Mar 2011   #9

windows 7 Home Premium 64 Bit
 
 

That's what I thought at first, I have seen registry file types I haven't recognised before, weird thing about the .mp7 file is, it opens no problem with WMP but renaming it simply gives the file a thumbnail, nothing more.

Quote   Quote: Originally Posted by Vertex View Post
You know, there are lots of file types that get into a computer right now like when you install a program or something, there are these file types you can see on the Registry that you never knew existed, you don't know what can open them and Googling them does not show up much results.

If we do have the MP3 and the MP4 as existing media formats now, maybe in the future we'll have an MP7 media format that delivers super high definition sound and audio for your desires but has a hefty huge file size.
My System SpecsSystem Spec
26 Mar 2011   #10

Windows 7 Home Premium x64
 
 

That's because the file was not actually muxed into the mp7 container, the extension was simply changed from the original to mp7. Trust me, if you actually muxed the streams into an mp7 container instead of mp4/mkv/mov/hdmov, you'd still have the icon (i.e. thumbnail).

Obviously, what I'm trying to say is that a container is not the same thing as the term extension :]
My System SpecsSystem Spec
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