diff -r 5f011170de74 -r a6cf5a06f02d server/src/app/Libraries/Transcript/TranscriptConverterInterface.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/server/src/app/Libraries/Transcript/TranscriptConverterInterface.php	Sat May 28 11:49:38 2016 +0200
@@ -0,0 +1,37 @@
+<?php
+namespace CorpusParole\Libraries\Transcript;
+
+interface TranscriptConverterInterface {
+
+    /**
+     * parse the source document.
+     */
+    function parseSource();
+
+    /**
+     * Return the id of the media used as reference.
+     */
+    function getMediaRefId();
+
+    /**
+     * return the source title, can return null.
+     */
+    function getSourceTitle();
+
+    /**
+     * build the various document parts
+     */
+    function buildMedias();
+    function buildResources();
+    function buildLists();
+    function buildAnnotationTypes();
+    function buildAnnotations();
+
+    /**
+     * Convert xml to json.
+     * return an PHP array ready for serialization
+     */
+    function convertToJson();
+
+
+}
\ No newline at end of file