diff --git a/client/src/app/search/search-filters.component.scss b/client/src/app/search/search-filters.component.scss
index edd85bc70..a88a1c0b0 100644
--- a/client/src/app/search/search-filters.component.scss
+++ b/client/src/app/search/search-filters.component.scss
@@ -66,4 +66,4 @@ input[type=submit] {
   white-space: nowrap;
 }
 
-@include ng2-tags
+@include ng2-tags;
diff --git a/client/src/app/shared/images/preview-upload.component.html b/client/src/app/shared/images/preview-upload.component.html
index 5e1d5211b..7c3a2b588 100644
--- a/client/src/app/shared/images/preview-upload.component.html
+++ b/client/src/app/shared/images/preview-upload.component.html
@@ -1,13 +1,11 @@
 <div class="root">
   <div class="preview-container">
     <my-reactive-file
-      [inputName]="inputName" [inputLabel]="inputLabel" [extensions]="videoImageExtensions" [maxFileSize]="maxVideoImageSize"
-      icon="edit" (fileChanged)="onFileChanged($event)"
+      [inputName]="inputName" [inputLabel]="inputLabel" [extensions]="videoImageExtensions" [maxFileSize]="maxVideoImageSize" placement="right"
+      icon="edit" (fileChanged)="onFileChanged($event)" [ngbTooltip]="'(extensions: '+ videoImageExtensions +', '+ maxSizeText +': '+ maxVideoImageSizeInBytes +')'"
     ></my-reactive-file>
 
     <img *ngIf="imageSrc" [ngStyle]="{ width: previewWidth, height: previewHeight }" [src]="imageSrc" class="preview" />
     <div *ngIf="!imageSrc" [ngStyle]="{ width: previewWidth, height: previewHeight }" class="preview no-image"></div>
   </div>
-
-  <div i18n class="file-constraints">(extensions: {{ allowedExtensionsMessage }}, max size: {{ maxVideoImageSize | bytes }})</div>
 </div>
diff --git a/client/src/app/shared/images/preview-upload.component.scss b/client/src/app/shared/images/preview-upload.component.scss
index 257060239..8f3522115 100644
--- a/client/src/app/shared/images/preview-upload.component.scss
+++ b/client/src/app/shared/images/preview-upload.component.scss
@@ -16,11 +16,13 @@
     }
 
     .preview {
-      border: 2px solid grey;
+      object-fit: cover;
       border-radius: 4px;
+      max-width: 100%;
 
       &.no-image {
-        background-color: #ececec;
+        border: 2px solid grey;
+        background-color: var(--mainBackgroundColor);
       }
     }
   }
diff --git a/client/src/app/shared/images/preview-upload.component.ts b/client/src/app/shared/images/preview-upload.component.ts
index 85a2173e9..7519734ba 100644
--- a/client/src/app/shared/images/preview-upload.component.ts
+++ b/client/src/app/shared/images/preview-upload.component.ts
@@ -3,6 +3,8 @@ import { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms'
 import { DomSanitizer, SafeResourceUrl } from '@angular/platform-browser'
 import { ServerService } from '@app/core'
 import { ServerConfig } from '@shared/models'
+import { BytesPipe } from 'ngx-pipes'
+import { I18n } from '@ngx-translate/i18n-polyfill'
 
 @Component({
   selector: 'my-preview-upload',
@@ -24,14 +26,20 @@ export class PreviewUploadComponent implements OnInit, ControlValueAccessor {
 
   imageSrc: SafeResourceUrl
   allowedExtensionsMessage = ''
+  maxSizeText: string
 
   private serverConfig: ServerConfig
+  private bytesPipe: BytesPipe
   private file: Blob
 
   constructor (
     private sanitizer: DomSanitizer,
-    private serverService: ServerService
-  ) {}
+    private serverService: ServerService,
+    private i18n: I18n
+  ) {
+    this.bytesPipe = new BytesPipe()
+    this.maxSizeText = this.i18n('max size')
+  }
 
   get videoImageExtensions () {
     return this.serverConfig.video.image.extensions
@@ -41,6 +49,10 @@ export class PreviewUploadComponent implements OnInit, ControlValueAccessor {
     return this.serverConfig.video.image.size.max
   }
 
+  get maxVideoImageSizeInBytes () {
+    return this.bytesPipe.transform(this.maxVideoImageSize)
+  }
+
   ngOnInit () {
     this.serverConfig = this.serverService.getTmpConfig()
     this.serverService.getConfig()
diff --git a/client/src/app/videos/+video-edit/shared/video-edit.component.html b/client/src/app/videos/+video-edit/shared/video-edit.component.html
index 152b069d2..d59394538 100644
--- a/client/src/app/videos/+video-edit/shared/video-edit.component.html
+++ b/client/src/app/videos/+video-edit/shared/video-edit.component.html
@@ -6,7 +6,7 @@
 
       <ng-template ngbNavContent>
         <div class="row">
-          <div class="col-md-8">
+          <div class="col-video-edit">
             <div class="form-group">
               <label i18n for="name">Title</label>
               <input type="text" id="name" class="form-control" formControlName="name" />
@@ -54,7 +54,7 @@
             </div>
           </div>
 
-          <div class="col-md-4">
+          <div class="col-video-edit">
             <div class="form-group">
               <label i18n>Channel</label>
               <div class="peertube-select-container">
diff --git a/client/src/app/videos/+video-edit/shared/video-edit.component.scss b/client/src/app/videos/+video-edit/shared/video-edit.component.scss
index 1b7bc56b4..de800b03f 100644
--- a/client/src/app/videos/+video-edit/shared/video-edit.component.scss
+++ b/client/src/app/videos/+video-edit/shared/video-edit.component.scss
@@ -1,5 +1,11 @@
-@import '_variables';
-@import '_mixins';
+// Bootstrap grid utilities require functions, variables and mixins
+@import 'node_modules/bootstrap/scss/functions';
+@import 'node_modules/bootstrap/scss/variables';
+@import 'node_modules/bootstrap/scss/mixins';
+@import 'node_modules/bootstrap/scss/grid';
+
+@import 'variables';
+@import 'mixins';
 
 label {
   font-weight: $font-regular;
@@ -54,6 +60,7 @@ my-peertube-checkbox {
 
   .captions-header {
     text-align: right;
+    margin-bottom: 1rem;
 
     .create-caption {
       @include create-button;
@@ -68,6 +75,7 @@ my-peertube-checkbox {
     a.caption-entry-label {
       @include disable-default-a-behaviour;
 
+      flex-grow: 1;
       color: #000;
 
       &:hover {
@@ -153,4 +161,49 @@ p-calendar {
   }
 }
 
-@include ng2-tags
+::ng-deep my-markdown-textarea {
+  .root {
+    @include media-breakpoint-down(xl) {
+      flex-direction: column !important;
+    }
+
+    textarea {
+      max-width: 100%;
+    }
+  }
+}
+
+@include ng2-tags;
+
+// columns for the video
+.col-video-edit {
+  @include make-col-ready();
+
+  @include media-breakpoint-up(md) {
+    @include make-col(7);
+
+    & + .col-video-edit {
+      @include make-col(5);
+    }
+  }
+
+  @include media-breakpoint-up(xl) {
+    @include make-col(8);
+
+    & + .col-video-edit {
+      @include make-col(4);
+    }
+  }
+}
+
+:host-context(.expanded) {
+  .col-video-edit {
+    @include media-breakpoint-up(md) {
+      @include make-col(8);
+  
+      & + .col-video-edit {
+        @include make-col(4);
+      }
+    }
+  }
+}
diff --git a/client/src/app/videos/+video-edit/video-add-components/video-send.scss b/client/src/app/videos/+video-edit/video-add-components/video-send.scss
index 1979d0061..ebe14c59e 100644
--- a/client/src/app/videos/+video-edit/video-add-components/video-send.scss
+++ b/client/src/app/videos/+video-edit/video-add-components/video-send.scss
@@ -43,10 +43,4 @@ $width-size: 190px;
   .button-file {
     @include peertube-button-file(max-content);
   }
-
-  .button-file-extension {
-    display: block;
-    font-size: 12px;
-    margin-top: 5px;
-  }
 }
diff --git a/client/src/app/videos/+video-edit/video-add-components/video-upload.component.html b/client/src/app/videos/+video-edit/video-add-components/video-upload.component.html
index be3a9662b..b4e1ceeca 100644
--- a/client/src/app/videos/+video-edit/video-add-components/video-upload.component.html
+++ b/client/src/app/videos/+video-edit/video-add-components/video-upload.component.html
@@ -2,11 +2,10 @@
   <div class="first-step-block">
     <my-global-icon class="upload-icon" iconName="upload"></my-global-icon>
 
-    <div class="button-file form-control">
+    <div class="button-file form-control" [ngbTooltip]="'(extensions: ' + videoExtensions + ')'" container="body">
       <span i18n>Select the file to upload</span>
       <input #videofileInput type="file" name="videofile" id="videofile" [accept]="videoExtensions" (change)="fileChange()" autofocus />
     </div>
-    <span class="button-file-extension">({{ videoExtensions }})</span>
 
     <div class="form-group form-group-channel">
       <label i18n for="first-step-channel">Channel</label>