Validation mimetypes doesn't work with 3gp files

[lafriakh]

• Laravel Version: 5.6
• PHP Version: 7.2
• Database Driver & Version: Mariadb 10.1.34

Description:

Validation not passed when i upload 3gp videos. My form request file:

    public function rules()
    {
        return [
            'title' => 'required',
            'video' => 'required|file|mimetypes:video/mp4,video/mpeg,video/x-matroska,video/x-flv,video/quicktime,video/x-msvideo,video/x-ms-wmv,video/x-m4v,video/3gpp,video/3gpp2',
        ];
    }

Steps To Reproduce:

When i try to get the file mime type via $request->getMimeType() it's return application/octet-stream.

[jmarcher]

And what the file mime type? To find out:

Windows (I believe this info is under the file properties) Linux and MacOS: file <filename> -i

[driesvints]

If this is an actual issue then this is most likely an issue with Symfony's ExtensionGuesser and not with Laravel: https://github.com/laravel/framework/issues/26511

[alenija]

Try to add 'enctype' => "multipart/form-data" in form