The video you linked to shows a workaround for creating new form views, wherein you can use "Manage Views" from the debug menu to change the view type to "form" after creating a temporary "tree" view.
As of the time of this answer, there is a bug in the bundled form view for creating/editing form views, "ir.ui.views form". The "type" field in the model for views has a "readonly" attribute, so you'll need to override that attribute in the form:
If you go to Settings / User Interface / Views and search for "ir.ui.view", you can correct the bug in the view quite easily. Change <field name="type"/>
to <field name="type" readonly="0"/>
. It should look something like this when you're done:
<?xml version="1.0"?>
<form string="Views" version="7.0">
<sheet>
<group>
<group>
<field name="name"/>
<field name="type" readonly="0"/>
<field name="model"/>
<field name="priority"/>
</group>
<group>
<field name="field_parent"/>
<field name="inherit_id"/>
<field name="xml_id"/>
</group>
</group>
<notebook>
<page string="Architecture">
<field name="arch"/>
</page>
<page string="Groups">
<field name="groups_id"/>
</page>
</notebook>
</sheet>
</form>
(Bug reports relating to this issue have already been filed, such as: bugs.launchpad.net/openobject-server/+bug/1103788 )