diff -r 1ade73c9f2c0 -r 5410acbcfb77 src/pyams_media/zmi/media.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/pyams_media/zmi/media.py	Tue Sep 08 16:21:33 2015 +0200
@@ -0,0 +1,98 @@
+#
+# Copyright (c) 2008-2015 Thierry Florac <tflorac AT ulthar.net>
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+from pyams_file.interfaces import IMediaFile, IVideo, IThumbnail
+from pyams_form.interfaces.form import IWidgetsPrefixViewletsManager
+from pyams_media.ffbase import FFmpeg
+from pyams_media.ffdocument import FFDocument
+from pyams_media.interfaces import IMediaConversionUtility, VIDEO_FRAME_SIZE, IMediaConverter, IMediaConversions
+from pyams_pagelet.pagelet import pagelet_config
+from pyams_skin.interfaces.viewlet import IContextActions
+from pyams_skin.layer import IPyAMSLayer
+from pyams_skin.viewlet.toolbar import ToolbarMenuItem
+from pyams_template.template import template_config
+from pyams_utils.property import cached_property
+from pyams_utils.registry import query_utility
+from pyams_viewlet.viewlet import viewlet_config, Viewlet
+from pyams_zmi.form import AdminDialogDisplayForm
+from pyams_zmi.layer import IAdminLayer
+
+__docformat__ = 'restructuredtext'
+
+
+# import standard library
+
+# import interfaces
+
+# import packages
+from z3c.form import field
+from zope.interface import Interface
+
+from pyams_media import _
+
+
+@viewlet_config(name='media.conversions.action', context=IVideo, layer=IPyAMSLayer, view=Interface,
+                manager=IContextActions, permission='manage', weight=15)
+class MediaConversionsAction(ToolbarMenuItem):
+    """Media conversions action"""
+
+    label = _("Media conversions...")
+    label_css_class = 'fa fa-fw fa-compress'
+
+    url = 'media-conversions.html'
+    modal_target = True
+
+
+@pagelet_config(name='media-conversions.html', context=IVideo, layer=IPyAMSLayer, permission='manage')
+class MediaConversionsDisplayForm(AdminDialogDisplayForm):
+    """Media conversions display form"""
+
+    legend = _("Selected media conversions")
+    icon_css_class = 'fa fa-fw fa-compress'
+
+    fields = field.Fields(Interface)
+
+    @property
+    def title(self):
+        return self.context.title or self.context.filename
+
+
+@viewlet_config(name='media-conversions-prefix', context=IVideo, layer=IAdminLayer,
+                view=MediaConversionsDisplayForm, manager=IWidgetsPrefixViewletsManager)
+@template_config(template='templates/media-conversions.pt')
+class MediaConversionsViewletsPrefix(Viewlet):
+    """Media conversions display form viewlets prefix"""
+
+    @property
+    def formats(self):
+        utility = query_utility(IMediaConversionUtility)
+        if utility is not None:
+            for format in utility.video_frame_size:
+                yield format, VIDEO_FRAME_SIZE.get(format)
+
+    @property
+    def converters(self):
+        utility = query_utility(IMediaConversionUtility)
+        if utility is not None:
+            for converter_name in utility.video_formats:
+                converter = query_utility(IMediaConverter, name=converter_name)
+                if converter is not None:
+                    yield converter_name, converter
+
+    @property
+    def original_frame_size(self):
+        return IThumbnail(self.context).get_image_size()
+
+    def has_conversion(self, converter, frame_size):
+        conversions = IMediaConversions(self.context)
+        name = 'video{width}.{extension}'.format(width='-{0}'.format(frame_size) if frame_size else '',
+                                                 extension=converter.format)
+        return name in conversions