Implement avatar miniatures (#4639)

* client: remove unused file

* refactor(client/my-actor-avatar): size from input

Read size from component input instead of scss, to make it possible to
use smaller avatar images when implemented.

* implement avatar miniatures

close #4560

* fix(test): max file size

* fix(search-index): normalize res acc to avatarMini

* refactor avatars to an array

* client/search: resize channel avatar to 120

* refactor(client/videos): remove unused function

* client(actor-avatar): set default size

* fix tests and avatars full result

When findOne is used only an array containting one avatar is returned.

* update migration version and version notations

* server/search: harmonize normalizing

* Cleanup avatar miniature PR

Co-authored-by: Chocobozzz <me@florianbigard.com>

54 files changed, 125 insertions, 212 deletions

diff --git a/client/src/app/+accounts/account-video-channels/account-video-channels.component.html b/client/src/app/+accounts/account-video-channels/account-video-channels.component.html
index 105bc12c3..379c0443e 100644
--- a/client/src/app/+accounts/account-video-channels/account-video-channels.component.html
+++ b/client/src/app/+accounts/account-video-channels/account-video-channels.component.html
@@ -9,8 +9,11 @@
 
       <div class="channel-avatar-row">
         <my-actor-avatar
-          [channel]="videoChannel" [internalHref]="getVideoChannelLink(videoChannel)"
-          i18n-title title="See this video channel"
+          [channel]="videoChannel"
+          [internalHref]="getVideoChannelLink(videoChannel)"
+          i18n-title
+          title="See this video channel"
+          size="75"
         ></my-actor-avatar>
 
         <h2>
diff --git a/client/src/app/+accounts/account-video-channels/account-video-channels.component.scss b/client/src/app/+accounts/account-video-channels/account-video-channels.component.scss
index be9e94f69..30b8098be 100644
--- a/client/src/app/+accounts/account-video-channels/account-video-channels.component.scss
+++ b/client/src/app/+accounts/account-video-channels/account-video-channels.component.scss
@@ -29,7 +29,6 @@
   grid-template-rows: auto 1fr;
 
   my-actor-avatar {
-    @include actor-avatar-size(75px);
     @include margin-right(15px);
 
     grid-column: 1;
diff --git a/client/src/app/+accounts/accounts.component.html b/client/src/app/+accounts/accounts.component.html
index 8362e6b7e..1544ad034 100644
--- a/client/src/app/+accounts/accounts.component.html
+++ b/client/src/app/+accounts/accounts.component.html
@@ -2,7 +2,7 @@
   <div class="account-info">
 
     <div class="account-avatar-row">
-      <my-actor-avatar class="main-avatar" [account]="account"></my-actor-avatar>
+      <my-actor-avatar class="main-avatar" [account]="account" size="120"></my-actor-avatar>
 
       <div>
         <div class="section-label" i18n>ACCOUNT</div>
diff --git a/client/src/app/+admin/moderation/instance-blocklist/instance-account-blocklist.component.html b/client/src/app/+admin/moderation/instance-blocklist/instance-account-blocklist.component.html
deleted file mode 100644
index feade0c26..000000000
--- a/client/src/app/+admin/moderation/instance-blocklist/instance-account-blocklist.component.html
+++ /dev/null
@@ -1,56 +0,0 @@
-<p-table
-  [value]="blockedAccounts" [paginator]="totalRecords > 0" [totalRecords]="totalRecords" [rows]="rowsPerPage" [rowsPerPageOptions]="rowsPerPageOptions"
-  [sortField]="sort.field" [sortOrder]="sort.order"
-  [lazy]="true" (onLazyLoad)="loadLazy($event)" [lazyLoadOnInit]="false"
-  [showCurrentPageReport]="true" i18n-currentPageReportTemplate
-  currentPageReportTemplate="Showing {{'{first}'}} to {{'{last}'}} of {{'{totalRecords}'}} muted accounts"
->
-  <ng-template pTemplate="caption">
-    <div class="caption">
-      <div class="ml-auto">
-        <my-advanced-input-filter (search)="onSearch($event)"></my-advanced-input-filter>
-      </div>
-    </div>
-  </ng-template>
-
-  <ng-template pTemplate="header">
-    <tr>
-      <th style="width: 150px;">Action</th> <!-- column for action buttons -->
-      <th style="width: calc(100% - 300px);" i18n>Account</th>
-      <th style="width: 150px;" i18n pSortableColumn="createdAt">Muted at <p-sortIcon field="createdAt"></p-sortIcon></th>
-    </tr>
-  </ng-template>
-
-  <ng-template pTemplate="body" let-accountBlock>
-    <tr>
-      <td class="action-cell">
-        <button class="unblock-button" (click)="unblockAccount(accountBlock)" i18n>Unmute</button>
-      </td>
-
-      <td>
-        <a [href]="accountBlock.blockedAccount.url" i18n-title title="Open account in a new tab" target="_blank" rel="noopener noreferrer">
-          <div class="chip two-lines">
-            <my-actor-avatar [account]="accountBlock.blockedAccount"></my-actor-avatar>
-            <div>
-              {{ accountBlock.blockedAccount.displayName }}
-              <span class="text-muted">{{ accountBlock.blockedAccount.nameWithHost }}</span>
-            </div>
-          </div>
-        </a>
-      </td>
-
-      <td>{{ accountBlock.createdAt | date: 'short' }}</td>
-    </tr>
-  </ng-template>
-
-  <ng-template pTemplate="emptymessage">
-    <tr>
-      <td colspan="6">
-        <div class="no-results">
-          <ng-container *ngIf="search" i18n>No account found matching current filters.</ng-container>
-          <ng-container *ngIf="!search" i18n>No account found.</ng-container>
-        </div>
-      </td>
-    </tr>
-  </ng-template>
-</p-table>
diff --git a/client/src/app/+admin/moderation/video-comment-list/video-comment-list.component.html b/client/src/app/+admin/moderation/video-comment-list/video-comment-list.component.html
index 9bf23c21a..0dbbbe1cc 100644
--- a/client/src/app/+admin/moderation/video-comment-list/video-comment-list.component.html
+++ b/client/src/app/+admin/moderation/video-comment-list/video-comment-list.component.html
@@ -66,7 +66,7 @@
       <td>
         <a [href]="videoComment.account.localUrl" i18n-title title="Open account in a new tab" target="_blank" rel="noopener noreferrer">
           <div class="chip two-lines">
-            <my-actor-avatar [account]="videoComment.account"></my-actor-avatar>
+            <my-actor-avatar [account]="videoComment.account" size="32"></my-actor-avatar>
           <div>
               {{ videoComment.account.displayName }}
               <span>{{ videoComment.by }}</span>
diff --git a/client/src/app/+manage/video-channel-edit/video-channel-update.component.ts b/client/src/app/+manage/video-channel-edit/video-channel-update.component.ts
index 21b6167b2..51cd45605 100644
--- a/client/src/app/+manage/video-channel-edit/video-channel-update.component.ts
+++ b/client/src/app/+manage/video-channel-edit/video-channel-update.component.ts
@@ -111,7 +111,7 @@ export class VideoChannelUpdateComponent extends VideoChannelEdit implements OnI
           next: data => {
             this.notifier.success($localize`Avatar changed.`)
 
-            this.videoChannel.updateAvatar(data.avatar)
+            this.videoChannel.updateAvatar(data.avatars)
           },
 
           error: (err: HttpErrorResponse) => genericUploadErrorHandler({
@@ -141,7 +141,7 @@ export class VideoChannelUpdateComponent extends VideoChannelEdit implements OnI
           next: data => {
             this.notifier.success($localize`Banner changed.`)
 
-            this.videoChannel.updateBanner(data.banner)
+            this.videoChannel.updateBanner(data.banners)
           },
 
           error: (err: HttpErrorResponse) => genericUploadErrorHandler({
diff --git a/client/src/app/+my-account/my-account-settings/my-account-settings.component.ts b/client/src/app/+my-account/my-account-settings/my-account-settings.component.ts
index a5bcb6496..577f4a252 100644
--- a/client/src/app/+my-account/my-account-settings/my-account-settings.component.ts
+++ b/client/src/app/+my-account/my-account-settings/my-account-settings.component.ts
@@ -43,7 +43,7 @@ export class MyAccountSettingsComponent implements OnInit, AfterViewChecked {
         next: data => {
           this.notifier.success($localize`Avatar changed.`)
 
-          this.user.updateAccountAvatar(data.avatar)
+          this.user.updateAccountAvatar(data.avatars)
         },
 
         error: (err: HttpErrorResponse) => genericUploadErrorHandler({
diff --git a/client/src/app/+my-library/+my-video-channels/my-video-channels.component.html b/client/src/app/+my-library/+my-video-channels/my-video-channels.component.html
index 77947315b..c1ded0f6d 100644
--- a/client/src/app/+my-library/+my-video-channels/my-video-channels.component.html
+++ b/client/src/app/+my-library/+my-video-channels/my-video-channels.component.html
@@ -19,7 +19,7 @@
 
 <div class="video-channels">
   <div *ngFor="let videoChannel of videoChannels; let i = index" class="video-channel">
-    <my-actor-avatar [channel]="videoChannel" [internalHref]="[ '/c', videoChannel.nameWithHost ]"></my-actor-avatar>
+    <my-actor-avatar [channel]="videoChannel" [internalHref]="[ '/c', videoChannel.nameWithHost ]" size="80"></my-actor-avatar>
 
     <div class="video-channel-info">
       <a [routerLink]="[ '/c', videoChannel.nameWithHost ]" class="video-channel-names" i18n-title title="Channel page">
diff --git a/client/src/app/+my-library/+my-video-channels/my-video-channels.component.scss b/client/src/app/+my-library/+my-video-channels/my-video-channels.component.scss
index 998e46cb2..484355967 100644
--- a/client/src/app/+my-library/+my-video-channels/my-video-channels.component.scss
+++ b/client/src/app/+my-library/+my-video-channels/my-video-channels.component.scss
@@ -24,7 +24,6 @@ my-edit-button {
   padding-bottom: 0;
 
   my-actor-avatar {
-    @include actor-avatar-size(80px);
     @include margin-right(10px);
   }
 }
diff --git a/client/src/app/+my-library/my-follows/my-followers.component.html b/client/src/app/+my-library/my-follows/my-followers.component.html
index eac750c86..4303695a3 100644
--- a/client/src/app/+my-library/my-follows/my-followers.component.html
+++ b/client/src/app/+my-library/my-follows/my-followers.component.html
@@ -14,7 +14,7 @@
 
 <div class="actors" myInfiniteScroller (nearOfBottom)="onNearOfBottom()" [dataObservable]="onDataSubject.asObservable()">
   <div *ngFor="let follow of follows" class="actor">
-    <my-actor-avatar [account]="follow.follower" [href]="follow.follower.url"></my-actor-avatar>
+    <my-actor-avatar [account]="follow.follower" [href]="follow.follower.url" size="40"></my-actor-avatar>
 
     <div class="actor-info">
       <a [href]="follow.follower.url" class="actor-names" rel="noopener noreferrer" target="_blank" i18n-title title="Follower page">
diff --git a/client/src/app/+my-library/my-follows/my-followers.component.scss b/client/src/app/+my-library/my-follows/my-followers.component.scss
index 15b51c419..fae4cd972 100644
--- a/client/src/app/+my-library/my-follows/my-followers.component.scss
+++ b/client/src/app/+my-library/my-follows/my-followers.component.scss
@@ -12,7 +12,7 @@ input[type=text] {
 }
 
 .actor {
-  @include actor-row($avatar-size: 40px, $min-height: auto, $separator: true);
+  @include actor-row($min-height: auto, $separator: true);
 
   .actor-display-name {
     font-size: 16px;
diff --git a/client/src/app/+my-library/my-follows/my-subscriptions.component.html b/client/src/app/+my-library/my-follows/my-subscriptions.component.html
index 775f0e783..391c4d3be 100644
--- a/client/src/app/+my-library/my-follows/my-subscriptions.component.html
+++ b/client/src/app/+my-library/my-follows/my-subscriptions.component.html
@@ -14,7 +14,7 @@
 
 <div class="actors" myInfiniteScroller (nearOfBottom)="onNearOfBottom()" [dataObservable]="onDataSubject.asObservable()">
   <div *ngFor="let videoChannel of videoChannels" class="actor">
-    <my-actor-avatar [channel]="videoChannel" [internalHref]="[ '/c', videoChannel.nameWithHost ]"></my-actor-avatar>
+    <my-actor-avatar [channel]="videoChannel" [internalHref]="[ '/c', videoChannel.nameWithHost ]" size="80"></my-actor-avatar>
 
     <div class="actor-info">
       <a [routerLink]="[ '/c', videoChannel.nameWithHost ]" class="actor-names" i18n-title title="Channel page">
diff --git a/client/src/app/+my-library/my-ownership/my-accept-ownership/my-accept-ownership.component.ts b/client/src/app/+my-library/my-ownership/my-accept-ownership/my-accept-ownership.component.ts
index 764da2369..8ead237c7 100644
--- a/client/src/app/+my-library/my-ownership/my-accept-ownership/my-accept-ownership.component.ts
+++ b/client/src/app/+my-library/my-ownership/my-accept-ownership/my-accept-ownership.component.ts
@@ -1,7 +1,7 @@
 import { SelectChannelItem } from 'src/types/select-options-item.model'
 import { Component, ElementRef, EventEmitter, OnInit, Output, ViewChild } from '@angular/core'
 import { AuthService, Notifier } from '@app/core'
-import { listUserChannels } from '@app/helpers'
+import { listUserChannelsForSelect } from '@app/helpers'
 import { OWNERSHIP_CHANGE_CHANNEL_VALIDATOR } from '@app/shared/form-validators/video-ownership-change-validators'
 import { FormReactive, FormValidatorService } from '@app/shared/shared-forms'
 import { VideoOwnershipService } from '@app/shared/shared-main'
@@ -36,7 +36,7 @@ export class MyAcceptOwnershipComponent extends FormReactive implements OnInit {
   ngOnInit () {
     this.videoChannels = []
 
-    listUserChannels(this.authService)
+    listUserChannelsForSelect(this.authService)
       .subscribe(channels => this.videoChannels = channels)
 
     this.buildForm({
diff --git a/client/src/app/+my-library/my-ownership/my-ownership.component.html b/client/src/app/+my-library/my-ownership/my-ownership.component.html
index 4c02c78fc..cb032505e 100644
--- a/client/src/app/+my-library/my-ownership/my-ownership.component.html
+++ b/client/src/app/+my-library/my-ownership/my-ownership.component.html
@@ -37,7 +37,7 @@
       <td>
         <a [href]="videoChangeOwnership.initiatorAccount.url" i18n-title title="Open account in a new tab" target="_blank" rel="noopener noreferrer">
           <div class="chip two-lines">
-            <my-actor-avatar [account]="videoChangeOwnership.initiatorAccount"></my-actor-avatar>
+            <my-actor-avatar [account]="videoChangeOwnership.initiatorAccount" size="32"></my-actor-avatar>
             <div>
               {{ videoChangeOwnership.initiatorAccount.displayName }}
               <span class="text-muted">{{ videoChangeOwnership.initiatorAccount.nameWithHost }}</span>
diff --git a/client/src/app/+my-library/my-video-playlists/my-video-playlist-create.component.ts b/client/src/app/+my-library/my-video-playlists/my-video-playlist-create.component.ts
index 8bc78b2db..9eb3e9888 100644
--- a/client/src/app/+my-library/my-video-playlists/my-video-playlist-create.component.ts
+++ b/client/src/app/+my-library/my-video-playlists/my-video-playlist-create.component.ts
@@ -1,7 +1,7 @@
 import { Component, OnInit } from '@angular/core'
 import { Router } from '@angular/router'
 import { AuthService, Notifier, ServerService } from '@app/core'
-import { listUserChannels } from '@app/helpers'
+import { listUserChannelsForSelect } from '@app/helpers'
 import {
   setPlaylistChannelValidator,
   VIDEO_PLAYLIST_CHANNEL_ID_VALIDATOR,
@@ -46,7 +46,7 @@ export class MyVideoPlaylistCreateComponent extends MyVideoPlaylistEdit implemen
       setPlaylistChannelValidator(this.form.get('videoChannelId'), privacy)
     })
 
-    listUserChannels(this.authService)
+    listUserChannelsForSelect(this.authService)
       .subscribe(channels => this.userVideoChannels = channels)
 
     this.serverService.getVideoPlaylistPrivacies()
diff --git a/client/src/app/+my-library/my-video-playlists/my-video-playlist-update.component.ts b/client/src/app/+my-library/my-video-playlists/my-video-playlist-update.component.ts
index 06ac3ad50..ef7ba0018 100644
--- a/client/src/app/+my-library/my-video-playlists/my-video-playlist-update.component.ts
+++ b/client/src/app/+my-library/my-video-playlists/my-video-playlist-update.component.ts
@@ -3,7 +3,7 @@ import { map, switchMap } from 'rxjs/operators'
 import { Component, OnDestroy, OnInit } from '@angular/core'
 import { ActivatedRoute, Router } from '@angular/router'
 import { AuthService, Notifier, ServerService } from '@app/core'
-import { listUserChannels } from '@app/helpers'
+import { listUserChannelsForSelect } from '@app/helpers'
 import {
   setPlaylistChannelValidator,
   VIDEO_PLAYLIST_CHANNEL_ID_VALIDATOR,
@@ -51,7 +51,7 @@ export class MyVideoPlaylistUpdateComponent extends MyVideoPlaylistEdit implemen
       setPlaylistChannelValidator(this.form.get('videoChannelId'), privacy)
     })
 
-    listUserChannels(this.authService)
+    listUserChannelsForSelect(this.authService)
       .subscribe(channels => this.userVideoChannels = channels)
 
     this.paramsSub = this.route.params
diff --git a/client/src/app/+search/search.component.html b/client/src/app/+search/search.component.html
index 412b962d1..2c84dd930 100644
--- a/client/src/app/+search/search.component.html
+++ b/client/src/app/+search/search.component.html
@@ -36,7 +36,7 @@
   <ng-container *ngFor="let result of results">
     <div *ngIf="isVideoChannel(result)" class="entry video-channel">
 
-      <my-actor-avatar [channel]="result" [internalHref]="getInternalChannelUrl(result)" [href]="getExternalChannelUrl(result)"></my-actor-avatar>
+      <my-actor-avatar [channel]="result" [internalHref]="getInternalChannelUrl(result)" [href]="getExternalChannelUrl(result)" size="120"></my-actor-avatar>
 
       <div class="video-channel-info">
         <a *ngIf="!isExternalChannelUrl()" [routerLink]="getInternalChannelUrl(result)" class="video-channel-names">
diff --git a/client/src/app/+search/search.component.scss b/client/src/app/+search/search.component.scss
index b521825e5..cab1d0e88 100644
--- a/client/src/app/+search/search.component.scss
+++ b/client/src/app/+search/search.component.scss
@@ -58,10 +58,6 @@
   max-width: 800px;
 }
 
-.video-channel my-actor-avatar {
-  @include build-channel-img-size($video-thumbnail-width);
-}
-
 .video-channel-info {
   flex-grow: 1;
   margin: 0 10px;
diff --git a/client/src/app/+video-channels/video-channels.component.html b/client/src/app/+video-channels/video-channels.component.html
index 212e2f867..09f81d2ce 100644
--- a/client/src/app/+video-channels/video-channels.component.html
+++ b/client/src/app/+video-channels/video-channels.component.html
@@ -23,7 +23,7 @@
         <div class="section-label" i18n>OWNER ACCOUNT</div>
 
         <div class="avatar-row">
-          <my-actor-avatar class="account-avatar" [account]="ownerAccount" [internalHref]="getAccountUrl()"></my-actor-avatar>
+          <my-actor-avatar class="account-avatar" [account]="ownerAccount" [internalHref]="getAccountUrl()" size="48"></my-actor-avatar>
 
           <div class="actor-info">
             <h4>
@@ -51,7 +51,7 @@
     </ng-template>
 
     <div class="channel-avatar-row">
-      <my-actor-avatar class="main-avatar" [channel]="videoChannel"></my-actor-avatar>
+      <my-actor-avatar class="main-avatar" [channel]="videoChannel" size="120"></my-actor-avatar>
 
       <div>
         <div class="section-label" i18n>VIDEO CHANNEL</div>
diff --git a/client/src/app/+video-channels/video-channels.component.scss b/client/src/app/+video-channels/video-channels.component.scss
index 72ee2d7bb..004ad7998 100644
--- a/client/src/app/+video-channels/video-channels.component.scss
+++ b/client/src/app/+video-channels/video-channels.component.scss
@@ -107,10 +107,6 @@
     display: flex;
     margin-bottom: 15px;
 
-    .account-avatar {
-      @include actor-avatar-size(48px);
-    }
-
     .actor-info {
       @include margin-left(15px);
     }
diff --git a/client/src/app/+videos/+video-edit/video-add-components/video-send.ts b/client/src/app/+videos/+video-edit/video-add-components/video-send.ts
index 3d0e1bf2a..9de373cd3 100644
--- a/client/src/app/+videos/+video-edit/video-add-components/video-send.ts
+++ b/client/src/app/+videos/+video-edit/video-add-components/video-send.ts
@@ -2,7 +2,7 @@ import { catchError, switchMap, tap } from 'rxjs/operators'
 import { SelectChannelItem } from 'src/types/select-options-item.model'
 import { Directive, EventEmitter, OnInit } from '@angular/core'
 import { AuthService, CanComponentDeactivateResult, Notifier, ServerService } from '@app/core'
-import { listUserChannels } from '@app/helpers'
+import { listUserChannelsForSelect } from '@app/helpers'
 import { FormReactive } from '@app/shared/shared-forms'
 import { VideoCaptionEdit, VideoCaptionService, VideoEdit, VideoService } from '@app/shared/shared-main'
 import { LoadingBarService } from '@ngx-loading-bar/core'
@@ -38,7 +38,7 @@ export abstract class VideoSend extends FormReactive implements OnInit {
   ngOnInit () {
     this.buildForm({})
 
-    listUserChannels(this.authService)
+    listUserChannelsForSelect(this.authService)
       .subscribe(channels => {
         this.userVideoChannels = channels
         this.firstStepChannelId = this.userVideoChannels[0].id
diff --git a/client/src/app/+videos/+video-edit/video-update.resolver.ts b/client/src/app/+videos/+video-edit/video-update.resolver.ts
index 91e76b7fe..82dae5c1c 100644
--- a/client/src/app/+videos/+video-edit/video-update.resolver.ts
+++ b/client/src/app/+videos/+video-edit/video-update.resolver.ts
@@ -3,7 +3,7 @@ import { map, switchMap } from 'rxjs/operators'
 import { Injectable } from '@angular/core'
 import { ActivatedRouteSnapshot, Resolve } from '@angular/router'
 import { AuthService } from '@app/core'
-import { listUserChannels } from '@app/helpers'
+import { listUserChannelsForSelect } from '@app/helpers'
 import { VideoCaptionService, VideoDetails, VideoService } from '@app/shared/shared-main'
 import { LiveVideoService } from '@app/shared/shared-video-live'
 
@@ -33,7 +33,7 @@ export class VideoUpdateResolver implements Resolve<any> {
         .loadCompleteDescription(video.descriptionPath)
         .pipe(map(description => Object.assign(video, { description }))),
 
-      listUserChannels(this.authService),
+      listUserChannelsForSelect(this.authService),
 
       this.videoCaptionService
         .listCaptions(video.id)
diff --git a/client/src/app/+videos/+video-watch/shared/comment/video-comment.component.html b/client/src/app/+videos/+video-watch/shared/comment/video-comment.component.html
index d0e9bcd29..5014b9692 100644
--- a/client/src/app/+videos/+video-watch/shared/comment/video-comment.component.html
+++ b/client/src/app/+videos/+video-watch/shared/comment/video-comment.component.html
@@ -1,6 +1,6 @@
 <div *ngIf="isCommentDisplayed()" class="root-comment" [ngClass]="{ 'is-child': isChild() }">
   <div class="left">
-    <my-actor-avatar *ngIf="!comment.isDeleted" [href]="comment.account.url" [account]="comment.account"></my-actor-avatar>
+    <my-actor-avatar *ngIf="!comment.isDeleted" [href]="comment.account.url" [account]="comment.account" [size]="isChild() ? '25' : '36'"></my-actor-avatar>
     <div class="vertical-border"></div>
   </div>
 
diff --git a/client/src/app/+videos/+video-watch/shared/comment/video-comment.component.scss b/client/src/app/+videos/+video-watch/shared/comment/video-comment.component.scss
index 87e313d41..54f828014 100644
--- a/client/src/app/+videos/+video-watch/shared/comment/video-comment.component.scss
+++ b/client/src/app/+videos/+video-watch/shared/comment/video-comment.component.scss
@@ -25,10 +25,6 @@
   }
 }
 
-my-actor-avatar {
-  @include actor-avatar-size(36px);
-}
-
 .comment {
   flex-grow: 1;
   // Fix word-wrap with flex
@@ -160,11 +156,6 @@ my-video-comment-add {
 }
 
 .is-child {
-  // Reduce avatars size for replies
-  my-actor-avatar {
-    @include actor-avatar-size(25px);
-  }
-
   .left {
     @include margin-right(6px);
   }
diff --git a/client/src/app/+videos/+video-watch/shared/metadata/video-avatar-channel.component.html b/client/src/app/+videos/+video-watch/shared/metadata/video-avatar-channel.component.html
index d433c7aba..a23152b67 100644
--- a/client/src/app/+videos/+video-watch/shared/metadata/video-avatar-channel.component.html
+++ b/client/src/app/+videos/+video-watch/shared/metadata/video-avatar-channel.component.html
@@ -2,19 +2,19 @@
   <my-actor-avatar
     *ngIf="showChannel"
     class="channel"
-    [class.main-avatar]="showChannel"
     [channel]="video.channel"
     [internalHref]="[ '/c', video.byVideoChannel ]"
     [title]="channelLinkTitle"
+    size="35"
   ></my-actor-avatar>
 
   <my-actor-avatar
     *ngIf="showAccount"
     class="account"
-    [class.main-avatar]="!showChannel"
     [class.second-avatar]="showChannel"
     [account]="video.account"
     [internalHref]="[ '/a', video.byAccount ]"
-    [title]="accountLinkTitle">
+    [title]="accountLinkTitle"
+    size="35">
   </my-actor-avatar>
 </div>
diff --git a/client/src/app/+videos/+video-watch/shared/metadata/video-avatar-channel.component.scss b/client/src/app/+videos/+video-watch/shared/metadata/video-avatar-channel.component.scss
index 71c5e4b5a..80711ff32 100644
--- a/client/src/app/+videos/+video-watch/shared/metadata/video-avatar-channel.component.scss
+++ b/client/src/app/+videos/+video-watch/shared/metadata/video-avatar-channel.component.scss
@@ -1,9 +1,5 @@
 @use '_mixins' as *;
 
-@mixin main {
-  @include actor-avatar-size(35px);
-}
-
 @mixin secondary {
   height: 60%;
   width: 60%;
@@ -14,16 +10,11 @@
 }
 
 .wrapper {
-  @include actor-avatar-size(35px);
   @include margin-right(5px);
 
   position: relative;
   margin-bottom: 5px;
 
-  .main-avatar {
-    @include main();
-  }
-
   .second-avatar {
     @include secondary();
   }
diff --git a/client/src/app/+videos/+video-watch/shared/metadata/video-avatar-channel.component.ts b/client/src/app/+videos/+video-watch/shared/metadata/video-avatar-channel.component.ts
index 146c440b3..4bfc7bd9d 100644
--- a/client/src/app/+videos/+video-watch/shared/metadata/video-avatar-channel.component.ts
+++ b/client/src/app/+videos/+video-watch/shared/metadata/video-avatar-channel.component.ts
@@ -20,8 +20,4 @@ export class VideoAvatarChannelComponent implements OnInit {
     this.channelLinkTitle = $localize`${this.video.account.name} (channel page)`
     this.accountLinkTitle = $localize`${this.video.byAccount} (account page)`
   }
-
-  isChannelAvatarNull () {
-    return this.video.channel.avatar === null
-  }
 }
diff --git a/client/src/app/+videos/video-list/overview/video-overview.component.html b/client/src/app/+videos/video-list/overview/video-overview.component.html
index 1a715560c..f250c2407 100644
--- a/client/src/app/+videos/video-list/overview/video-overview.component.html
+++ b/client/src/app/+videos/video-list/overview/video-overview.component.html
@@ -33,7 +33,7 @@
       <div class="section channel videos" *ngFor="let object of overview.channels">
         <div class="section-title">
           <a [routerLink]="[ '/c', buildVideoChannelBy(object) ]">
-            <my-actor-avatar [channel]="buildVideoChannel(object)"></my-actor-avatar>
+            <my-actor-avatar [channel]="buildVideoChannel(object)" size="28"></my-actor-avatar>
 
             <h2 class="section-title">{{ object.channel.displayName }}</h2>
           </a>
diff --git a/client/src/app/+videos/video-list/overview/video-overview.component.scss b/client/src/app/+videos/video-list/overview/video-overview.component.scss
index 2239d1913..8b2aa88f2 100644
--- a/client/src/app/+videos/video-list/overview/video-overview.component.scss
+++ b/client/src/app/+videos/video-list/overview/video-overview.component.scss
@@ -52,7 +52,6 @@
         align-items: center;
 
         my-actor-avatar {
-          @include actor-avatar-size(28px);
           @include margin-right(8px);
 
           font-size: initial;
diff --git a/client/src/app/core/users/user.model.ts b/client/src/app/core/users/user.model.ts
index f211051ce..6ba30e4b8 100644
--- a/client/src/app/core/users/user.model.ts
+++ b/client/src/app/core/users/user.model.ts
@@ -132,8 +132,8 @@ export class User implements UserServerModel {
     }
   }
 
-  updateAccountAvatar (newAccountAvatar?: ActorImage) {
-    if (newAccountAvatar) this.account.updateAvatar(newAccountAvatar)
+  updateAccountAvatar (newAccountAvatars?: ActorImage[]) {
+    if (newAccountAvatars) this.account.updateAvatar(newAccountAvatars)
     else this.account.resetAvatar()
   }
 
diff --git a/client/src/app/core/users/user.service.ts b/client/src/app/core/users/user.service.ts
index b14bff193..b4024c02d 100644
--- a/client/src/app/core/users/user.service.ts
+++ b/client/src/app/core/users/user.service.ts
@@ -118,7 +118,7 @@ export class UserService {
   changeAvatar (avatarForm: FormData) {
     const url = UserService.BASE_USERS_URL + 'me/avatar/pick'
 
-    return this.authHttp.post<{ avatar: ActorImage }>(url, avatarForm)
+    return this.authHttp.post<{ avatars: ActorImage[] }>(url, avatarForm)
                .pipe(catchError(err => this.restExtractor.handleError(err)))
   }
 
diff --git a/client/src/app/helpers/utils/channel.ts b/client/src/app/helpers/utils/channel.ts
index 93863a8af..2cd56d6e6 100644
--- a/client/src/app/helpers/utils/channel.ts
+++ b/client/src/app/helpers/utils/channel.ts
@@ -1,8 +1,9 @@
+import { minBy } from 'lodash-es'
 import { first, map } from 'rxjs/operators'
 import { SelectChannelItem } from 'src/types/select-options-item.model'
 import { AuthService } from '../../core/auth'
 
-function listUserChannels (authService: AuthService) {
+function listUserChannelsForSelect (authService: AuthService) {
   return authService.userInformationLoaded
     .pipe(
       first(),
@@ -23,12 +24,12 @@ function listUserChannels (authService: AuthService) {
             id: c.id,
             label: c.displayName,
             support: c.support,
-            avatarPath: c.avatar?.path
+            avatarPath: minBy(c.avatars, 'width')[0]?.path
           }) as SelectChannelItem)
       })
     )
 }
 
 export {
-  listUserChannels
+  listUserChannelsForSelect
 }
diff --git a/client/src/app/modal/account-setup-warning-modal.component.ts b/client/src/app/modal/account-setup-warning-modal.component.ts
index c78de447d..c4cbf92b6 100644
--- a/client/src/app/modal/account-setup-warning-modal.component.ts
+++ b/client/src/app/modal/account-setup-warning-modal.component.ts
@@ -32,7 +32,7 @@ export class AccountSetupWarningModalComponent {
   }
 
   hasAccountAvatar (user: User) {
-    return !!user.account.avatar
+    return user.account.avatars.length !== 0
   }
 
   hasAccountDescription (user: User) {
diff --git a/client/src/app/shared/shared-abuse-list/abuse-list-table.component.html b/client/src/app/shared/shared-abuse-list/abuse-list-table.component.html
index 07cc73461..f0a27c6e2 100644
--- a/client/src/app/shared/shared-abuse-list/abuse-list-table.component.html
+++ b/client/src/app/shared/shared-abuse-list/abuse-list-table.component.html
@@ -43,7 +43,7 @@
       <td *ngIf="isAdminView()">
         <a *ngIf="abuse.reporterAccount" [href]="abuse.reporterAccount.url" i18n-title title="Open account in a new tab" target="_blank" rel="noopener noreferrer">
           <div class="chip two-lines">
-            <my-actor-avatar [account]="abuse.reporterAccount"></my-actor-avatar>
+            <my-actor-avatar [account]="abuse.reporterAccount" size="32"></my-actor-avatar>
             <div>
               {{ abuse.reporterAccount.displayName }}
               <span>{{ abuse.reporterAccount.nameWithHost }}</span>
diff --git a/client/src/app/shared/shared-actor-image-edit/actor-avatar-edit.component.ts b/client/src/app/shared/shared-actor-image-edit/actor-avatar-edit.component.ts
index 8b7d64ed3..01bb401fb 100644
--- a/client/src/app/shared/shared-actor-image-edit/actor-avatar-edit.component.ts
+++ b/client/src/app/shared/shared-actor-image-edit/actor-avatar-edit.component.ts
@@ -72,7 +72,7 @@ export class ActorAvatarEditComponent implements OnInit {
   }
 
   hasAvatar () {
-    return !!this.preview || !!this.actor.avatar
+    return !!this.preview || this.actor.avatars.length !== 0
   }
 
   isChannel () {
diff --git a/client/src/app/shared/shared-actor-image/actor-avatar.component.scss b/client/src/app/shared/shared-actor-image/actor-avatar.component.scss
index a2424b593..68bf74553 100644
--- a/client/src/app/shared/shared-actor-image/actor-avatar.component.scss
+++ b/client/src/app/shared/shared-actor-image/actor-avatar.component.scss
@@ -20,38 +20,23 @@
   }
 }
 
-.avatar-18 {
-  --avatarSize: 18px;
-  --initialFontSize: 13px;
-}
+$sizes: '18', '25', '28', '32', '34', '35', '36', '40', '48', '75', '80', '100', '120';
 
-.avatar-25 {
-  --avatarSize: 25px;
+@each $size in $sizes {
+  .avatar-#{$size} {
+    --avatarSize: #{$size}px;
+  }  
 }
 
-.avatar-32 {
-  --avatarSize: 32px;
-}
-
-.avatar-34 {
-  --avatarSize: 34px;
-}
-
-.avatar-36 {
-  --avatarSize: 36px;
-}
-
-.avatar-40 {
-  --avatarSize: 40px;
+.avatar-18 {
+  --initialFontSize: 13px;
 }
 
 .avatar-100 {
-  --avatarSize: 100px;
   --initialFontSize: 40px;
 }
 
 .avatar-120 {
-  --avatarSize: 120px;
   --initialFontSize: 46px;
 }
 
diff --git a/client/src/app/shared/shared-actor-image/actor-avatar.component.ts b/client/src/app/shared/shared-actor-image/actor-avatar.component.ts
index c323dc724..bc7e8a096 100644
--- a/client/src/app/shared/shared-actor-image/actor-avatar.component.ts
+++ b/client/src/app/shared/shared-actor-image/actor-avatar.component.ts
@@ -4,11 +4,11 @@ import { Account } from '../shared-main/account/account.model'
 
 type ActorInput = {
   name: string
-  avatar?: { url?: string, path: string }
+  avatars: { width: number, url?: string, path: string }[]
   url: string
 }
 
-export type ActorAvatarSize = '18' | '25' | '32' | '34' | '36' | '40' | '100' | '120'
+export type ActorAvatarSize = '18' | '25' | '28' | '32' | '34' | '35' | '36' | '40' | '48' | '75' | '80' | '100' | '120'
 
 @Component({
   selector: 'my-actor-avatar',
@@ -23,7 +23,7 @@ export class ActorAvatarComponent {
 
   @Input() previewImage: string
 
-  @Input() size: ActorAvatarSize
+  @Input() size: ActorAvatarSize = '32'
 
   // Use an external link
   @Input() href: string
@@ -50,14 +50,13 @@ export class ActorAvatarComponent {
   }
 
   get defaultAvatarUrl () {
-    if (this.channel) return VideoChannel.GET_DEFAULT_AVATAR_URL()
-
-    return Account.GET_DEFAULT_AVATAR_URL()
+    if (this.account) return Account.GET_DEFAULT_AVATAR_URL(+this.size)
+    if (this.channel) return VideoChannel.GET_DEFAULT_AVATAR_URL(+this.size)
   }
 
   get avatarUrl () {
-    if (this.account) return Account.GET_ACTOR_AVATAR_URL(this.account)
-    if (this.channel) return VideoChannel.GET_ACTOR_AVATAR_URL(this.channel)
+    if (this.account) return Account.GET_ACTOR_AVATAR_URL(this.account, +this.size)
+    if (this.channel) return VideoChannel.GET_ACTOR_AVATAR_URL(this.channel, +this.size)
 
     return ''
   }
diff --git a/client/src/app/shared/shared-custom-markup/peertube-custom-tags/channel-miniature-markup.component.html b/client/src/app/shared/shared-custom-markup/peertube-custom-tags/channel-miniature-markup.component.html
index de150aac9..52a402329 100644
--- a/client/src/app/shared/shared-custom-markup/peertube-custom-tags/channel-miniature-markup.component.html
+++ b/client/src/app/shared/shared-custom-markup/peertube-custom-tags/channel-miniature-markup.component.html
@@ -1,7 +1,7 @@
 <div *ngIf="channel" class="channel">
 
   <div class="channel-avatar-row">
-    <my-actor-avatar [channel]="channel" [internalHref]="getVideoChannelLink()" i18n-title title="See this video channel"></my-actor-avatar>
+    <my-actor-avatar [channel]="channel" [internalHref]="getVideoChannelLink()" i18n-title title="See this video channel" size="75"></my-actor-avatar>
 
     <h6>
       <a [routerLink]="getVideoChannelLink()" i18n-title title="See this video channel">
diff --git a/client/src/app/shared/shared-custom-markup/peertube-custom-tags/channel-miniature-markup.component.scss b/client/src/app/shared/shared-custom-markup/peertube-custom-tags/channel-miniature-markup.component.scss
index 39e8d2091..e8ef478d9 100644
--- a/client/src/app/shared/shared-custom-markup/peertube-custom-tags/channel-miniature-markup.component.scss
+++ b/client/src/app/shared/shared-custom-markup/peertube-custom-tags/channel-miniature-markup.component.scss
@@ -26,8 +26,6 @@
   }
 
   my-actor-avatar {
-    @include actor-avatar-size(75px);
-
     grid-column: 1;
     grid-row: 1 / 4;
   }
diff --git a/client/src/app/shared/shared-forms/select/select-channel.component.ts b/client/src/app/shared/shared-forms/select/select-channel.component.ts
index 40a7c53bb..5fcae0050 100644
--- a/client/src/app/shared/shared-forms/select/select-channel.component.ts
+++ b/client/src/app/shared/shared-forms/select/select-channel.component.ts
@@ -31,7 +31,7 @@ export class SelectChannelComponent implements ControlValueAccessor, OnChanges {
     this.channels = this.items.map(c => {
       const avatarPath = c.avatarPath
         ? c.avatarPath
-        : VideoChannel.GET_DEFAULT_AVATAR_URL()
+        : VideoChannel.GET_DEFAULT_AVATAR_URL(20)
 
       return Object.assign({}, c, { avatarPath })
     })
diff --git a/client/src/app/shared/shared-main/account/account.model.ts b/client/src/app/shared/shared-main/account/account.model.ts
index 8b78d01a6..a26a9c11c 100644
--- a/client/src/app/shared/shared-main/account/account.model.ts
+++ b/client/src/app/shared/shared-main/account/account.model.ts
@@ -17,11 +17,15 @@ export class Account extends Actor implements ServerAccount {
 
   userId?: number
 
-  static GET_ACTOR_AVATAR_URL (actor: { avatar?: { url?: string, path: string } }) {
-    return Actor.GET_ACTOR_AVATAR_URL(actor)
+  static GET_ACTOR_AVATAR_URL (actor: { avatars: { width: number, url?: string, path: string }[] }, size: number) {
+    return Actor.GET_ACTOR_AVATAR_URL(actor, size)
   }
 
-  static GET_DEFAULT_AVATAR_URL () {
+  static GET_DEFAULT_AVATAR_URL (size: number) {
+    if (size <= 48) {
+      return `${window.location.origin}/client/assets/images/default-avatar-account-48x48.png`
+    }
+
     return `${window.location.origin}/client/assets/images/default-avatar-account.png`
   }
 
@@ -42,12 +46,12 @@ export class Account extends Actor implements ServerAccount {
     this.mutedServerByInstance = false
   }
 
-  updateAvatar (newAvatar: ActorImage) {
-    this.avatar = newAvatar
+  updateAvatar (newAvatars: ActorImage[]) {
+    this.avatars = newAvatars
   }
 
   resetAvatar () {
-    this.avatar = null
+    this.avatars = []
   }
 
   updateBlockStatus (blockStatus: BlockStatus) {
diff --git a/client/src/app/shared/shared-main/account/actor.model.ts b/client/src/app/shared/shared-main/account/actor.model.ts
index 082f44fb9..a54f51aa4 100644
--- a/client/src/app/shared/shared-main/account/actor.model.ts
+++ b/client/src/app/shared/shared-main/account/actor.model.ts
@@ -13,20 +13,22 @@ export abstract class Actor implements ServerActor {
 
   createdAt: Date | string
 
-  avatar: ActorImage
+  // TODO: remove, deprecated in 4.2
+  avatar: never
+
+  avatars: ActorImage[]
 
   isLocal: boolean
 
-  static GET_ACTOR_AVATAR_URL (actor: { avatar?: { url?: string, path: string } }) {
-    if (actor?.avatar?.url) return actor.avatar.url
+  static GET_ACTOR_AVATAR_URL (actor: { avatars: { width: number, url?: string, path: string }[] }, size: number) {
+    const avatar = actor.avatars.sort((a, b) => a.width - b.width).find(a => a.width >= size)
 
-    if (actor?.avatar) {
-      const absoluteAPIUrl = getAbsoluteAPIUrl()
+    if (!avatar) return ''
+    if (avatar.url) return avatar.url
 
-      return absoluteAPIUrl + actor.avatar.path
-    }
+    const absoluteAPIUrl = getAbsoluteAPIUrl()
 
-    return ''
+    return absoluteAPIUrl + avatar.path
   }
 
   static CREATE_BY_STRING (accountName: string, host: string, forceHostname = false) {
@@ -55,7 +57,7 @@ export abstract class Actor implements ServerActor {
 
     if (hash.createdAt) this.createdAt = new Date(hash.createdAt.toString())
 
-    this.avatar = hash.avatar
+    this.avatars = hash.avatars
     this.isLocal = Actor.IS_LOCAL(this.host)
   }
 }
diff --git a/client/src/app/shared/shared-main/misc/channels-setup-message.component.ts b/client/src/app/shared/shared-main/misc/channels-setup-message.component.ts
index 702475029..4f9cbc525 100644
--- a/client/src/app/shared/shared-main/misc/channels-setup-message.component.ts
+++ b/client/src/app/shared/shared-main/misc/channels-setup-message.component.ts
@@ -19,7 +19,7 @@ export class ChannelsSetupMessageComponent implements OnInit {
   hasChannelNotConfigured () {
     if (!this.user.videoChannels) return false
 
-    return this.user.videoChannels.filter((channel: VideoChannel) => (!channel.avatar || !channel.description)).length > 0
+    return this.user.videoChannels.filter((channel: VideoChannel) => (channel.avatars.length === 0 || !channel.description)).length > 0
   }
 
   ngOnInit () {
diff --git a/client/src/app/shared/shared-main/users/user-notification.model.ts b/client/src/app/shared/shared-main/users/user-notification.model.ts
index 439547102..1eb69d5a2 100644
--- a/client/src/app/shared/shared-main/users/user-notification.model.ts
+++ b/client/src/app/shared/shared-main/users/user-notification.model.ts
@@ -254,11 +254,11 @@ export class UserNotification implements UserNotificationServer {
     return [ this.buildVideoUrl(comment.video), { threadId: comment.threadId } ]
   }
 
-  private setAccountAvatarUrl (actor: { avatarUrl?: string, avatar?: { url?: string, path: string } }) {
-    actor.avatarUrl = Account.GET_ACTOR_AVATAR_URL(actor) || Account.GET_DEFAULT_AVATAR_URL()
+  private setAccountAvatarUrl (actor: { avatarUrl?: string, avatars: { width: number, url?: string, path: string }[] }) {
+    actor.avatarUrl = VideoChannel.GET_ACTOR_AVATAR_URL(actor, 48) || Account.GET_DEFAULT_AVATAR_URL(48)
   }
 
-  private setVideoChannelAvatarUrl (actor: { avatarUrl?: string, avatar?: { url?: string, path: string } }) {
-    actor.avatarUrl = VideoChannel.GET_ACTOR_AVATAR_URL(actor) || VideoChannel.GET_DEFAULT_AVATAR_URL()
+  private setVideoChannelAvatarUrl (actor: { avatarUrl?: string, avatars: { width: number, url?: string, path: string }[] }) {
+    actor.avatarUrl = VideoChannel.GET_ACTOR_AVATAR_URL(actor, 48) || VideoChannel.GET_DEFAULT_AVATAR_URL(48)
   }
 }
diff --git a/client/src/app/shared/shared-main/video-channel/video-channel.model.ts b/client/src/app/shared/shared-main/video-channel/video-channel.model.ts
index ac2679b42..e22b0cfd0 100644
--- a/client/src/app/shared/shared-main/video-channel/video-channel.model.ts
+++ b/client/src/app/shared/shared-main/video-channel/video-channel.model.ts
@@ -12,7 +12,11 @@ export class VideoChannel extends Actor implements ServerVideoChannel {
   nameWithHost: string
   nameWithHostForced: string
 
-  banner: ActorImage
+  // TODO: remove, deprecated in 4.2
+  banner: never
+
+  banners: ActorImage[]
+
   bannerUrl: string
 
   updatedAt: Date | string
@@ -24,23 +28,25 @@ export class VideoChannel extends Actor implements ServerVideoChannel {
 
   viewsPerDay?: ViewsPerDate[]
 
-  static GET_ACTOR_AVATAR_URL (actor: { avatar?: { url?: string, path: string } }) {
-    return Actor.GET_ACTOR_AVATAR_URL(actor)
+  static GET_ACTOR_AVATAR_URL (actor: { avatars: { width: number, url?: string, path: string }[] }, size: number) {
+    return Actor.GET_ACTOR_AVATAR_URL(actor, size)
   }
 
   static GET_ACTOR_BANNER_URL (channel: ServerVideoChannel) {
-    if (channel?.banner?.url) return channel.banner.url
-
-    if (channel?.banner) {
-      const absoluteAPIUrl = getAbsoluteAPIUrl()
+    if (!channel) return ''
 
-      return absoluteAPIUrl + channel.banner.path
-    }
+    const banner = channel.banners[0]
+    if (!banner) return ''
 
-    return ''
+    if (banner.url) return banner.url
+    return getAbsoluteAPIUrl() + banner.path
   }
 
-  static GET_DEFAULT_AVATAR_URL () {
+  static GET_DEFAULT_AVATAR_URL (size: number) {
+    if (size <= 48) {
+      return `${window.location.origin}/client/assets/images/default-avatar-video-channel-48x48.png`
+    }
+
     return `${window.location.origin}/client/assets/images/default-avatar-video-channel.png`
   }
 
@@ -51,7 +57,7 @@ export class VideoChannel extends Actor implements ServerVideoChannel {
     this.description = hash.description
     this.support = hash.support
 
-    this.banner = hash.banner
+    this.banners = hash.banners
 
     this.isLocal = hash.isLocal
 
@@ -74,24 +80,24 @@ export class VideoChannel extends Actor implements ServerVideoChannel {
     this.updateComputedAttributes()
   }
 
-  updateAvatar (newAvatar: ActorImage) {
-    this.avatar = newAvatar
+  updateAvatar (newAvatars: ActorImage[]) {
+    this.avatars = newAvatars
 
     this.updateComputedAttributes()
   }
 
   resetAvatar () {
-    this.updateAvatar(null)
+    this.updateAvatar([])
   }
 
-  updateBanner (newBanner: ActorImage) {
-    this.banner = newBanner
+  updateBanner (newBanners: ActorImage[]) {
+    this.banners = newBanners
 
     this.updateComputedAttributes()
   }
 
   resetBanner () {
-    this.updateBanner(null)
+    this.updateBanner([])
   }
 
   updateComputedAttributes () {
diff --git a/client/src/app/shared/shared-main/video-channel/video-channel.service.ts b/client/src/app/shared/shared-main/video-channel/video-channel.service.ts
index f37f13c51..480d250fb 100644
--- a/client/src/app/shared/shared-main/video-channel/video-channel.service.ts
+++ b/client/src/app/shared/shared-main/video-channel/video-channel.service.ts
@@ -80,7 +80,7 @@ export class VideoChannelService {
   changeVideoChannelImage (videoChannelName: string, avatarForm: FormData, type: 'avatar' | 'banner') {
     const url = VideoChannelService.BASE_VIDEO_CHANNEL_URL + videoChannelName + '/' + type + '/pick'
 
-    return this.authHttp.post<{ avatar?: ActorImage, banner?: ActorImage }>(url, avatarForm)
+    return this.authHttp.post<{ avatars?: ActorImage[], banners?: ActorImage[] }>(url, avatarForm)
                .pipe(catchError(err => this.restExtractor.handleError(err)))
   }
 
diff --git a/client/src/app/shared/shared-main/video/video.model.ts b/client/src/app/shared/shared-main/video/video.model.ts
index fe5643688..8e275181c 100644
--- a/client/src/app/shared/shared-main/video/video.model.ts
+++ b/client/src/app/shared/shared-main/video/video.model.ts
@@ -84,7 +84,11 @@ export class Video implements VideoServerModel {
     displayName: string
     url: string
     host: string
-    avatar?: ActorImage
+
+    // TODO: remove, deprecated in 4.2
+    avatar: ActorImage
+
+    avatars: ActorImage[]
   }
 
   channel: {
@@ -93,7 +97,11 @@ export class Video implements VideoServerModel {
     displayName: string
     url: string
     host: string
-    avatar?: ActorImage
+
+    // TODO: remove, deprecated in 4.2
+    avatar: ActorImage
+
+    avatars: ActorImage[]
   }
 
   userHistory?: {
diff --git a/client/src/app/shared/shared-moderation/account-blocklist.component.html b/client/src/app/shared/shared-moderation/account-blocklist.component.html
index 637abcb51..0143194e9 100644
--- a/client/src/app/shared/shared-moderation/account-blocklist.component.html
+++ b/client/src/app/shared/shared-moderation/account-blocklist.component.html
@@ -33,7 +33,7 @@
       <td>
         <a [href]="accountBlock.blockedAccount.url" i18n-title title="Open account in a new tab" target="_blank" rel="noopener noreferrer">
           <div class="chip two-lines">
-            <my-actor-avatar [account]="accountBlock.blockedAccount"></my-actor-avatar>
+            <my-actor-avatar [account]="accountBlock.blockedAccount" size="32"></my-actor-avatar>
             <div>
               {{ accountBlock.blockedAccount.displayName }}
               <span class="text-muted">{{ accountBlock.blockedAccount.nameWithHost }}</span>
diff --git a/client/src/app/shared/shared-video-miniature/video-miniature.component.html b/client/src/app/shared/shared-video-miniature/video-miniature.component.html
index 30483831a..3cf128de0 100644
--- a/client/src/app/shared/shared-video-miniature/video-miniature.component.html
+++ b/client/src/app/shared/shared-video-miniature/video-miniature.component.html
@@ -13,11 +13,13 @@
         <my-actor-avatar
           *ngIf="displayOptions.avatar && displayOwnerVideoChannel() && !displayAsRow" [title]="channelLinkTitle"
           [channel]="video.channel" [size]="actorImageSize" [internalHref]="[ '/c', video.byVideoChannel ]"
+          size="32"
         ></my-actor-avatar>
 
         <my-actor-avatar
           *ngIf="displayOptions.avatar && displayOwnerAccount() && !displayAsRow" [title]="channelLinkTitle"
           [account]="video.account" [size]="actorImageSize" [internalHref]="[ '/c', video.byVideoChannel ]"
+          size="32"
         ></my-actor-avatar>
 
         <div class="w-100 d-flex flex-column">
diff --git a/client/src/assets/images/default-avatar-account-48x48.png b/client/src/assets/images/default-avatar-account-48x48.png
new file mode 100644
index 000000000..cd09cbe1d
--- /dev/null
+++ b/client/src/assets/images/default-avatar-account-48x48.png
diff --git a/client/src/assets/images/default-avatar-video-channel-48x48.png b/client/src/assets/images/default-avatar-video-channel-48x48.png
new file mode 100644
index 000000000..d0e7d11c9
--- /dev/null
+++ b/client/src/assets/images/default-avatar-video-channel-48x48.png
diff --git a/client/src/sass/include/_account-channel-page.scss b/client/src/sass/include/_account-channel-page.scss
index b135bbb6d..06384b98d 100644
--- a/client/src/sass/include/_account-channel-page.scss
+++ b/client/src/sass/include/_account-channel-page.scss
@@ -26,10 +26,6 @@
   grid-column: 1;
   margin-bottom: 30px;
 
-  .main-avatar {
-    @include actor-avatar-size(120px);
-  }
-
   > div {
     @include margin-left($img-margin);
 
diff --git a/client/src/sass/include/_actor.scss b/client/src/sass/include/_actor.scss
index f9e44b8ad..aa2331efe 100644
--- a/client/src/sass/include/_actor.scss
+++ b/client/src/sass/include/_actor.scss
@@ -1,12 +1,10 @@
 @use '_variables' as *;
 @use '_mixins' as *;
 
-@mixin actor-row ($avatar-size: 80px, $avatar-margin-right: 10px, $min-height: 130px, $separator: true) {
+@mixin actor-row ($avatar-margin-right: 10px, $min-height: 130px, $separator: true) {
   @include row-blocks($min-height: $min-height, $separator: $separator);
 
   > my-actor-avatar {
-    @include actor-avatar-size($avatar-size);
-
     @include margin-right($avatar-margin-right);
   }
 
diff --git a/client/src/sass/include/_mixins.scss b/client/src/sass/include/_mixins.scss
index c8ec3b4d1..291bff6db 100644
--- a/client/src/sass/include/_mixins.scss
+++ b/client/src/sass/include/_mixins.scss
@@ -887,7 +887,7 @@
     height: $avatar-height;
 
     my-actor-avatar {
-      @include actor-avatar-size($avatar-height);
+      display: inline-block;
     }
 
     div {