Scan video file to find out its true container format.

[somebody2978]

I accidentally renamed the extensions of several AVI video files to FLV and now I can't identify what they are.
Example (with MediaInfo):



The only alternative I have left is try use Everything to scan its content so I can check its metadata and actually see what video container have independent of its extension.
I've tried add some new column in detailed view, but the only thing I see for format is "Video Format" which notifies codec used, but I can't find any that notifies video container format.

[void]

Please try the file signature property in Everything 1.5:

*.flv addcolumn:file-signature

*.flv addcolumn:file-signature file-signature:video/avi

[somebody2978]

Please try the file signature property in Everything 1.5:

*.flv addcolumn:file-signature

*.flv addcolumn:file-signature file-signature:video/avi

You saved my life. It identifies real containers perfectly. Thank you so much.