diff --git a/src/views/Delegate/Gallery.vue b/src/views/Delegate/Gallery.vue
index 4d7c956..e0ce671 100644
--- a/src/views/Delegate/Gallery.vue
+++ b/src/views/Delegate/Gallery.vue
@@ -262,7 +262,11 @@ export default {
         const reader = new FileReader()
         reader.readAsArrayBuffer(file)
         reader.onloadend = (event) => {
-          resolve(['file', event.target.result, file.name])
+          let name = file.name
+          if (file.type.indexOf('video') !== -1) {
+            name += '||%_FORMAT_VIDEO_%||' // it's a dirty way to say to the back end : 'hey this is a video file !'
+          }
+          resolve(['file', event.target.result, name])
         }
         reader.onerror = () => {
           console.log(reader.error)
@@ -275,7 +279,11 @@ export default {
       const promises = this.files.map(file => this.loadFile(file))
       Promise.all(promises).then(results => {
         const formData = new FormData()
-        results.forEach(r => formData.append(r[0], new Blob([new Uint8Array(r[1])]), r[2]))
+        results.forEach(r => formData.append(
+          r[0], // field name
+          new Blob([new Uint8Array(r[1])]), // the file
+          r[2] // file name
+        ))
 
         this.$apitator.post('/delegate/medias', formData, {
           withAuth: true,