Fix download of PhotoSizeProgressive

Closes #1700.
LonamiWebs · Feb 13, 2021 · b0158b3 · b0158b3
1 parent 75db9f7
commit b0158b3
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/telethon/client/downloads.py b/telethon/client/downloads.py
@@ -810,6 +810,11 @@ async def _download_photo(self: 'TelegramClient', photo, file, date, thumb, prog
         if isinstance(size, (types.PhotoCachedSize, types.PhotoStrippedSize)):
             return self._download_cached_photo_size(size, file)
 
+        if isinstance(size, types.PhotoSizeProgressive):
+            file_size = max(size.sizes)
+        else:
+            file_size = size.size
+
         result = await self.download_file(
             types.InputPhotoFileLocation(
                 id=photo.id,
@@ -818,7 +823,7 @@ async def _download_photo(self: 'TelegramClient', photo, file, date, thumb, prog
                 thumb_size=size.type
             ),
             file,
-            file_size=size.size,
+            file_size=file_size,
             progress_callback=progress_callback
         )
         return result if file is bytes else file