diff --git a/react/features/base/responsive-ui/actions.js b/react/features/base/responsive-ui/actions.js
index 884d8007f0be5..1d1d56d96a99e 100644
--- a/react/features/base/responsive-ui/actions.js
+++ b/react/features/base/responsive-ui/actions.js
@@ -1,5 +1,6 @@
 // @flow
 
+import { batch } from 'react-redux';
 import type { Dispatch } from 'redux';
 
 import { CHAT_SIZE } from '../../chat/constants';
@@ -45,10 +46,13 @@ export function clientResized(clientWidth: number, clientHeight: number) {
             }
         }
 
-        return dispatch({
-            type: CLIENT_RESIZED,
-            clientHeight,
-            clientWidth: availableWidth
+        batch(() => {
+            dispatch({
+                type: CLIENT_RESIZED,
+                clientHeight,
+                clientWidth: availableWidth
+            });
+            dispatch(setAspectRatio(clientWidth, clientHeight));
         });
     };
 }
diff --git a/react/features/filmstrip/components/web/Thumbnail.js b/react/features/filmstrip/components/web/Thumbnail.js
index 025b50f2d2a9c..3f7c281cd5155 100644
--- a/react/features/filmstrip/components/web/Thumbnail.js
+++ b/react/features/filmstrip/components/web/Thumbnail.js
@@ -14,6 +14,7 @@ import {
     pinParticipant
 } from '../../../base/participants';
 import { connect } from '../../../base/redux';
+import { ASPECT_RATIO_NARROW } from '../../../base/responsive-ui/constants';
 import { isTestModeEnabled } from '../../../base/testing';
 import {
     getLocalAudioTrack,
@@ -33,6 +34,7 @@ import {
     DISPLAY_MODE_TO_STRING,
     DISPLAY_VIDEO,
     DISPLAY_VIDEO_WITH_NAME,
+    MOBILE_FILMSTRIP_PORTRAIT_RATIO,
     VIDEO_TEST_EVENTS,
     SHOW_TOOLBAR_CONTEXT_MENU_AFTER
 } from '../../constants';
@@ -144,6 +146,11 @@ export type Props = {|
      */
     _isMobile: boolean,
 
+    /**
+     * Whether we are currently running in a mobile browser in portrait orientation.
+     */
+    _isMobilePortrait: boolean,
+
     /**
      * Indicates whether the participant is screen sharing.
      */
@@ -764,7 +771,9 @@ class Thumbnail extends Component<Props, State> {
         const {
             _defaultLocalDisplayName,
             _disableLocalVideoFlip,
+            _height,
             _isMobile,
+            _isMobilePortrait,
             _isScreenSharing,
             _localFlipX,
             _disableProfile,
@@ -778,6 +787,9 @@ class Thumbnail extends Component<Props, State> {
         const videoTrackClassName
             = !_disableLocalVideoFlip && _videoTrack && !_isScreenSharing && _localFlipX ? 'flipVideoX' : '';
 
+        styles.thumbnail.height = _isMobilePortrait
+            ? `${Math.floor(_height * MOBILE_FILMSTRIP_PORTRAIT_RATIO)}px`
+            : styles.thumbnail.height;
 
         return (
             <span
@@ -1043,6 +1055,7 @@ function _mapStateToProps(state, ownProps): Object {
         ? getLocalAudioTrack(tracks) : getTrackByMediaTypeAndParticipant(tracks, MEDIA_TYPE.AUDIO, participantID);
     const _currentLayout = getCurrentLayout(state);
     let size = {};
+    let _isMobilePortrait = false;
     const {
         startSilent,
         disableLocalVideoFlip,
@@ -1078,9 +1091,12 @@ function _mapStateToProps(state, ownProps): Object {
             _height: height
         };
 
+        _isMobilePortrait = _isMobile && state['features/base/responsive-ui'].aspectRatio === ASPECT_RATIO_NARROW;
+
         break;
     }
     case LAYOUTS.TILE_VIEW: {
+
         const { width, height } = state['features/filmstrip'].tileViewDimensions.thumbnailSize;
 
         size = {
@@ -1106,6 +1122,7 @@ function _mapStateToProps(state, ownProps): Object {
         _isCurrentlyOnLargeVideo: state['features/large-video']?.participantId === id,
         _isDominantSpeakerDisabled: interfaceConfig.DISABLE_DOMINANT_SPEAKER_INDICATOR,
         _isMobile,
+        _isMobilePortrait,
         _isScreenSharing: _videoTrack?.videoType === 'desktop',
         _isTestModeEnabled: isTestModeEnabled(state),
         _isVideoPlayable: id && isVideoPlayable(state, id),
diff --git a/react/features/filmstrip/constants.js b/react/features/filmstrip/constants.js
index 596e4167f748e..8ba24d5ef7b9d 100644
--- a/react/features/filmstrip/constants.js
+++ b/react/features/filmstrip/constants.js
@@ -221,6 +221,14 @@ export const HORIZONTAL_FILMSTRIP_MARGIN = 39;
  */
 export const SHOW_TOOLBAR_CONTEXT_MENU_AFTER = 600;
 
+
+/**
+ * The ratio for filmstrip self view on mobile portrait mode.
+ *
+ * @type {number}
+ */
+export const MOBILE_FILMSTRIP_PORTRAIT_RATIO = 2.5;
+
 /**
  * The margin for each side of the tile view. Taken away from the available
  * height and width for the tile container to display in.