From ef4f9a962c6ef41b1b1905186a26c0695b1e4be2 Mon Sep 17 00:00:00 2001
From: th3c00lw0lf <108631096+th3c00lw0lf@users.noreply.github.com>
Date: Sat, 15 Oct 2022 19:01:29 +0100
Subject: [PATCH] Fix MediaEmptyError error when sending some videos (#3951)

---
 telethon/client/uploads.py | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/telethon/client/uploads.py b/telethon/client/uploads.py
index a0df1b59..a27d2895 100644
--- a/telethon/client/uploads.py
+++ b/telethon/client/uploads.py
@@ -458,7 +458,7 @@ class UploadMethods:
                 ))
 
                 fm = utils.get_input_media(
-                    r.document, supports_streaming=supports_streaming)
+                   r.document, supports_streaming=supports_streaming)
 
             if captions:
                 caption, msg_entities = captions.pop()
@@ -753,13 +753,18 @@ class UploadMethods:
                     thumb = str(thumb.absolute())
                 thumb = await self.upload_file(thumb, file_size=file_size)
 
+            # setting `nosound_video` to `True` doesn't affect videos with sound
+            # instead it prevents sending silent videos as GIFs
+            nosound_video = True if mime_type.split("/")[0] == 'video' else None
+
             media = types.InputMediaUploadedDocument(
                 file=file_handle,
                 mime_type=mime_type,
                 attributes=attributes,
                 thumb=thumb,
                 force_file=force_document and not is_image,
-                ttl_seconds=ttl
+                ttl_seconds=ttl,
+                nosound_video=nosound_video
             )
         return file_handle, media, as_image