2 files changed, 8 insertions, 3 deletions

diff --git a/client/src/app/+admin/config/edit-custom-config/edit-custom-config.component.html b/client/src/app/+admin/config/edit-custom-config/edit-custom-config.component.html
index 82f467e16..8d6c9ab5b 100644
--- a/client/src/app/+admin/config/edit-custom-config/edit-custom-config.component.html
+++ b/client/src/app/+admin/config/edit-custom-config/edit-custom-config.component.html
@@ -549,7 +549,11 @@
                 <my-peertube-checkbox
                   [inputName]="getResolutionKey(resolution.id)" [formControlName]="resolution.id"
                   i18n-labelText labelText="Resolution {{resolution.label}} enabled"
-                ></my-peertube-checkbox>
+                >
+                  <ng-template *ngIf="resolution.description" ptTemplate="help">
+                    <div i18n [innerHTML]="resolution.description"></div>
+                  </ng-template>
+                </my-peertube-checkbox>
               </div>
             </ng-container>
 
diff --git a/client/src/app/+admin/config/edit-custom-config/edit-custom-config.component.ts b/client/src/app/+admin/config/edit-custom-config/edit-custom-config.component.ts
index 25e06d8a1..ed9c3247c 100644
--- a/client/src/app/+admin/config/edit-custom-config/edit-custom-config.component.ts
+++ b/client/src/app/+admin/config/edit-custom-config/edit-custom-config.component.ts
@@ -18,7 +18,7 @@ import { ServerConfig } from '@shared/models'
 export class EditCustomConfigComponent extends FormReactive implements OnInit {
   customConfig: CustomConfig
 
-  resolutions: { id: string, label: string }[] = []
+  resolutions: { id: string, label: string, description?: string }[] = []
   transcodingThreadOptions: { label: string, value: number }[] = []
 
   languageItems: SelectItem[] = []
@@ -40,7 +40,8 @@ export class EditCustomConfigComponent extends FormReactive implements OnInit {
     this.resolutions = [
       {
         id: '0p',
-        label: this.i18n('Audio-only')
+        label: this.i18n('Audio-only'),
+        description: `A <code>.mp4</code> that keeps the original audio track, with no video`
       },
       {
         id: '240p',