diff --git a/src/api/gramjs/apiBuilders/messages.ts b/src/api/gramjs/apiBuilders/messages.ts
index 4bfa1eca5..6dd1c8e9a 100644
--- a/src/api/gramjs/apiBuilders/messages.ts
+++ b/src/api/gramjs/apiBuilders/messages.ts
@@ -23,7 +23,14 @@ import {
   ApiInvoice,
 } from '../../types';
 
-import { DELETED_COMMENTS_CHANNEL_ID, LOCAL_MESSAGE_ID_BASE, SERVICE_NOTIFICATIONS_USER_ID } from '../../../config';
+import {
+  DELETED_COMMENTS_CHANNEL_ID,
+  LOCAL_MESSAGE_ID_BASE,
+  SERVICE_NOTIFICATIONS_USER_ID,
+  SUPPORTED_IMAGE_CONTENT_TYPES,
+  SUPPORTED_VIDEO_CONTENT_TYPES,
+  VIDEO_MOV_TYPE,
+} from '../../../config';
 import { pick } from '../../../util/iteratees';
 import { getApiChatIdFromMtpPeer } from './chats';
 import { buildStickerFromDocument } from './symbols';
@@ -286,6 +293,11 @@ export function buildVideoFromDocument(document: GramJs.Document): ApiVideo | un
     id, mimeType, thumbs, size, attributes,
   } = document;
 
+  // eslint-disable-next-line no-restricted-globals
+  if (mimeType === VIDEO_MOV_TYPE && !(self as any).isMovSupported) {
+    return undefined;
+  }
+
   const videoAttr = attributes
     .find((a: any): a is GramJs.DocumentAttributeVideo => a instanceof GramJs.DocumentAttributeVideo);
 
@@ -419,7 +431,7 @@ export function buildApiDocument(document: GramJs.TypeDocument): ApiDocument | u
       height: photoSize.h,
     };
 
-    if (mimeType.startsWith('image/')) {
+    if (SUPPORTED_IMAGE_CONTENT_TYPES.has(mimeType)) {
       mediaType = 'photo';
 
       const imageAttribute = attributes
@@ -432,7 +444,7 @@ export function buildApiDocument(document: GramJs.TypeDocument): ApiDocument | u
           height,
         };
       }
-    } else if (mimeType.startsWith('video/')) {
+    } else if (SUPPORTED_VIDEO_CONTENT_TYPES.has(mimeType)) {
       mediaType = 'video';
     }
   }
diff --git a/src/api/gramjs/methods/client.ts b/src/api/gramjs/methods/client.ts
index 270033fec..a5216d182 100644
--- a/src/api/gramjs/methods/client.ts
+++ b/src/api/gramjs/methods/client.ts
@@ -44,9 +44,14 @@ export async function init(_onUpdate: OnApiUpdate, initialArgs: ApiInitialArgs)
 
   onUpdate = _onUpdate;
 
-  const { userAgent, platform, sessionData } = initialArgs;
+  const {
+    userAgent, platform, sessionData, isMovSupported,
+  } = initialArgs;
   const session = new sessions.CallbackSession(sessionData, onSessionUpdate);
 
+  // eslint-disable-next-line no-restricted-globals
+  (self as any).isMovSupported = isMovSupported;
+
   client = new TelegramClient(
     session,
     process.env.TELEGRAM_T_API_ID,
diff --git a/src/api/gramjs/methods/messages.ts b/src/api/gramjs/methods/messages.ts
index 4d89692de..4a652a585 100644
--- a/src/api/gramjs/methods/messages.ts
+++ b/src/api/gramjs/methods/messages.ts
@@ -18,7 +18,13 @@ import {
   ApiReportReason,
 } from '../../types';
 
-import { ALL_FOLDER_ID, DEBUG, PINNED_MESSAGES_LIMIT } from '../../../config';
+import {
+  ALL_FOLDER_ID,
+  DEBUG,
+  PINNED_MESSAGES_LIMIT,
+  SUPPORTED_IMAGE_CONTENT_TYPES,
+  SUPPORTED_VIDEO_CONTENT_TYPES,
+} from '../../../config';
 import { invokeRequest, uploadFile } from './client';
 import {
   buildApiMessage,
@@ -506,9 +512,11 @@ async function uploadMedia(localMessage: ApiMessage, attachment: ApiAttachment,
 
   const attributes: GramJs.TypeDocumentAttribute[] = [new GramJs.DocumentAttributeFilename({ fileName: filename })];
   if (quick) {
-    if (mimeType.startsWith('image/')) {
+    if (SUPPORTED_IMAGE_CONTENT_TYPES.has(mimeType)) {
       return new GramJs.InputMediaUploadedPhoto({ file: inputFile });
-    } else {
+    }
+
+    if (SUPPORTED_VIDEO_CONTENT_TYPES.has(mimeType)) {
       const { width, height, duration } = quick;
       if (duration !== undefined) {
         attributes.push(new GramJs.DocumentAttributeVideo({
diff --git a/src/api/types/misc.ts b/src/api/types/misc.ts
index 28634a6a4..310e8c4c6 100644
--- a/src/api/types/misc.ts
+++ b/src/api/types/misc.ts
@@ -4,6 +4,7 @@ export interface ApiInitialArgs {
   userAgent: string;
   platform?: string;
   sessionData?: ApiSessionData;
+  isMovSupported?: boolean;
 }
 
 export interface ApiOnProgress {
diff --git a/src/components/middle/MiddleColumn.tsx b/src/components/middle/MiddleColumn.tsx
index 9defe46a6..76cab54a4 100644
--- a/src/components/middle/MiddleColumn.tsx
+++ b/src/components/middle/MiddleColumn.tsx
@@ -13,12 +13,12 @@ import {
   MIN_SCREEN_WIDTH_FOR_STATIC_RIGHT_COLUMN,
   SAFE_SCREEN_WIDTH_FOR_STATIC_RIGHT_COLUMN,
   SAFE_SCREEN_WIDTH_FOR_CHAT_INFO,
-  CONTENT_TYPES_FOR_QUICK_UPLOAD,
   ANIMATION_LEVEL_MAX,
   ANIMATION_END_DELAY,
   DARK_THEME_BG_COLOR,
   LIGHT_THEME_BG_COLOR,
   ANIMATION_LEVEL_MIN,
+  SUPPORTED_IMAGE_CONTENT_TYPES,
 } from '../../config';
 import {
   IS_SINGLE_COLUMN_LAYOUT,
@@ -99,8 +99,8 @@ type DispatchProps = Pick<GlobalActions, (
 
 const CLOSE_ANIMATION_DURATION = IS_SINGLE_COLUMN_LAYOUT ? 450 + ANIMATION_END_DELAY : undefined;
 
-function canBeQuicklyUploaded(item: DataTransferItem) {
-  return item.kind === 'file' && item.type && CONTENT_TYPES_FOR_QUICK_UPLOAD.has(item.type);
+function isImage(item: DataTransferItem) {
+  return item.kind === 'file' && item.type && SUPPORTED_IMAGE_CONTENT_TYPES.has(item.type);
 }
 
 const MiddleColumn: FC<StateProps & DispatchProps> = ({
@@ -228,7 +228,8 @@ const MiddleColumn: FC<StateProps & DispatchProps> = ({
       // Filter unnecessary element for drag and drop images in Firefox (https://github.com/Ajaxy/telegram-tt/issues/49)
       // https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API/Recommended_drag_types#image
       .filter((item) => item.type !== 'text/uri-list')
-      .every(canBeQuicklyUploaded);
+      // As of September 2021, native clients suggest "send quick, but compressed" only for images
+      .every(isImage);
 
     setDropAreaState(shouldDrawQuick ? DropAreaState.QuickFile : DropAreaState.Document);
   }, []);
diff --git a/src/components/middle/composer/AttachMenu.tsx b/src/components/middle/composer/AttachMenu.tsx
index 93cc225f4..eab8bde46 100644
--- a/src/components/middle/composer/AttachMenu.tsx
+++ b/src/components/middle/composer/AttachMenu.tsx
@@ -1,6 +1,6 @@
 import React, { FC, memo, useCallback } from '../../../lib/teact/teact';
 
-import { CONTENT_TYPES_FOR_QUICK_UPLOAD } from '../../../config';
+import { CONTENT_TYPES_WITH_PREVIEW } from '../../../config';
 import { IS_TOUCH_ENV } from '../../../util/environment';
 import { openSystemFilesDialog } from '../../../util/systemFilesDialog';
 import { IAllowedAttachmentOptions } from '../../../modules/helpers';
@@ -35,7 +35,7 @@ const AttachMenu: FC<OwnProps> = ({
 
   const handleQuickSelect = useCallback(() => {
     openSystemFilesDialog(
-      Array.from(CONTENT_TYPES_FOR_QUICK_UPLOAD).join(','),
+      Array.from(CONTENT_TYPES_WITH_PREVIEW).join(','),
       (e) => handleFileSelect(e, true),
     );
   }, [handleFileSelect]);
diff --git a/src/components/middle/composer/AttachmentModal.tsx b/src/components/middle/composer/AttachmentModal.tsx
index 8c532e55d..368dd0638 100644
--- a/src/components/middle/composer/AttachmentModal.tsx
+++ b/src/components/middle/composer/AttachmentModal.tsx
@@ -4,7 +4,12 @@ import React, {
 
 import { ApiAttachment, ApiChatMember, ApiUser } from '../../../api/types';
 
-import { CONTENT_TYPES_FOR_QUICK_UPLOAD, EDITABLE_INPUT_MODAL_ID } from '../../../config';
+import {
+  CONTENT_TYPES_WITH_PREVIEW,
+  EDITABLE_INPUT_MODAL_ID,
+  SUPPORTED_IMAGE_CONTENT_TYPES,
+  SUPPORTED_VIDEO_CONTENT_TYPES,
+} from '../../../config';
 import { getFileExtension } from '../../common/helpers/documentInfo';
 import captureEscKeyListener from '../../../util/captureEscKeyListener';
 import usePrevious from '../../../hooks/usePrevious';
@@ -128,7 +133,7 @@ const AttachmentModal: FC<OwnProps> = ({
     if (files?.length) {
       const newFiles = isQuick
         ? Array.from(files).filter((file) => {
-          return file.type && CONTENT_TYPES_FOR_QUICK_UPLOAD.has(file.type);
+          return file.type && CONTENT_TYPES_WITH_PREVIEW.has(file.type);
         })
         : Array.from(files);
 
@@ -149,8 +154,8 @@ const AttachmentModal: FC<OwnProps> = ({
     return undefined;
   }
 
-  const areAllPhotos = renderingAttachments.every((a) => a.mimeType.startsWith('image/'));
-  const areAllVideos = renderingAttachments.every((a) => a.mimeType.startsWith('video/'));
+  const areAllPhotos = renderingAttachments.every((a) => SUPPORTED_IMAGE_CONTENT_TYPES.has(a.mimeType));
+  const areAllVideos = renderingAttachments.every((a) => SUPPORTED_VIDEO_CONTENT_TYPES.has(a.mimeType));
   const areAllAudios = renderingAttachments.every((a) => a.mimeType.startsWith('audio/'));
 
   let title = '';
diff --git a/src/components/middle/composer/helpers/buildAttachment.ts b/src/components/middle/composer/helpers/buildAttachment.ts
index 9f3f97ed7..94ef5cf01 100644
--- a/src/components/middle/composer/helpers/buildAttachment.ts
+++ b/src/components/middle/composer/helpers/buildAttachment.ts
@@ -1,4 +1,5 @@
 import { ApiAttachment } from '../../../../api/types';
+import { SUPPORTED_IMAGE_CONTENT_TYPES, SUPPORTED_VIDEO_CONTENT_TYPES } from '../../../../config';
 import {
   preloadImage,
   preloadVideo,
@@ -17,7 +18,7 @@ export default async function buildAttachment(
   let quick;
   let previewBlobUrl;
 
-  if (mimeType.startsWith('image/')) {
+  if (SUPPORTED_IMAGE_CONTENT_TYPES.has(mimeType)) {
     if (isQuick) {
       const img = await preloadImage(blobUrl);
       const { width, height } = img;
@@ -33,7 +34,7 @@ export default async function buildAttachment(
     } else {
       previewBlobUrl = blobUrl;
     }
-  } else if (mimeType.startsWith('video/')) {
+  } else if (SUPPORTED_VIDEO_CONTENT_TYPES.has(mimeType)) {
     const { videoWidth: width, videoHeight: height, duration } = await preloadVideo(blobUrl);
     quick = { width, height, duration };
 
diff --git a/src/config.ts b/src/config.ts
index 7b5e8feac..08c916895 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -121,8 +121,19 @@ export const BASE_EMOJI_KEYWORD_LANG = 'en';
 export const MENU_TRANSITION_DURATION = 200;
 export const SLIDE_TRANSITION_DURATION = 450;
 
-export const CONTENT_TYPES_FOR_QUICK_UPLOAD = new Set([
-  'image/png', 'image/gif', 'image/jpeg', 'video/mp4', 'video/avi', 'video/quicktime',
+export const VIDEO_MOV_TYPE = 'video/quicktime';
+
+export const SUPPORTED_IMAGE_CONTENT_TYPES = new Set([
+  'image/png', 'image/gif', 'image/jpeg',
+]);
+
+export const SUPPORTED_VIDEO_CONTENT_TYPES = new Set([
+  'video/mp4', // video/quicktime added dynamically in environment.ts
+]);
+
+export const CONTENT_TYPES_WITH_PREVIEW = new Set([
+  ...SUPPORTED_IMAGE_CONTENT_TYPES,
+  ...SUPPORTED_VIDEO_CONTENT_TYPES,
 ]);
 
 // eslint-disable-next-line max-len
diff --git a/src/modules/actions/api/initial.ts b/src/modules/actions/api/initial.ts
index 1f209947d..3af30b5f3 100644
--- a/src/modules/actions/api/initial.ts
+++ b/src/modules/actions/api/initial.ts
@@ -13,7 +13,7 @@ import {
   MEDIA_PROGRESSIVE_CACHE_NAME,
   IS_TEST,
 } from '../../../config';
-import { PLATFORM_ENV } from '../../../util/environment';
+import { IS_MOV_SUPPORTED, PLATFORM_ENV } from '../../../util/environment';
 import { unsubscribe } from '../../../util/notifications';
 import * as cacheApi from '../../../util/cacheApi';
 import { updateAppBadge } from '../../../util/appBadge';
@@ -37,6 +37,7 @@ addReducer('initApi', (global: GlobalState, actions) => {
       userAgent: navigator.userAgent,
       platform: PLATFORM_ENV,
       sessionData: loadStoredSession(),
+      isMovSupported: IS_MOV_SUPPORTED,
     });
   })();
 });
diff --git a/src/util/environment.ts b/src/util/environment.ts
index 45bdc9ad4..48f0c8eae 100644
--- a/src/util/environment.ts
+++ b/src/util/environment.ts
@@ -4,6 +4,8 @@ import {
   MOBILE_SCREEN_LANDSCAPE_MAX_HEIGHT,
   MOBILE_SCREEN_LANDSCAPE_MAX_WIDTH,
   IS_TEST,
+  SUPPORTED_VIDEO_CONTENT_TYPES,
+  VIDEO_MOV_TYPE,
 } from '../config';
 
 export * from './environmentWebp';
@@ -67,6 +69,14 @@ export const IS_CANVAS_FILTER_SUPPORTED = (
 );
 export const LAYERS_ANIMATION_NAME = IS_ANDROID ? 'slide-fade' : IS_IOS ? 'slide-layers' : 'push-slide';
 
+const TEST_VIDEO = document.createElement('video');
+export const IS_MOV_SUPPORTED = Boolean(
+  TEST_VIDEO.canPlayType(VIDEO_MOV_TYPE).replace('no', '')
+  || IS_IOS, // IOS reports '', but still plays .mov files
+);
+
+if (IS_MOV_SUPPORTED) SUPPORTED_VIDEO_CONTENT_TYPES.add(VIDEO_MOV_TYPE);
+
 export const DPR = window.devicePixelRatio || 1;
 
 export const MASK_IMAGE_DISABLED = true;