diff -r 4b305c1f9e0b -r 1a8529f5f679 src/pyams_media/zmi/templates/video-conversions.pt
--- a/src/pyams_media/zmi/templates/video-conversions.pt	Mon Jul 09 11:43:41 2018 +0200
+++ b/src/pyams_media/zmi/templates/video-conversions.pt	Mon Jul 09 13:42:20 2018 +0200
@@ -21,7 +21,7 @@
 				class="text-align-center">
 				<tal:if condition="converted">
 					<a tal:define="conversion view.get_conversion(converter, None);
-								   url extension:absolute_url(conversion);"
+								   url tales:absolute_url(conversion);"
 					   tal:attributes="href string:${url}?download=1">
 						<span class="txt-color-green" i18n:translate="">OK</span>
 					</a>
@@ -38,7 +38,7 @@
 					<tal:if condition="maybe">
 						<tal:if condition="converted">
 							<a tal:define="conversion view.get_conversion(converter, format[0]);
-										   url extension:absolute_url(conversion);"
+										   url tales:absolute_url(conversion);"
 							   tal:attributes="href string:${url}?download=1">
 								<span class="txt-color-green" i18n:translate="">OK</span>
 							</a>