No sound video causes media group send failure

[SagiriShiho]

Checklist

• I am sure the error is coming from Pyrogram's code and not elsewhere.
• I have searched in the issue tracker for similar bug reports, including closed ones.
• I ran pip3 install -U https://github.com/pyrogram/pyrogram/archive/master.zip and reproduced the issue using the latest development version.

Description

Sending with a media group (send_media_group), if one of the videos is without sound, it causes the conversion to animation(gif) and thus the sending fails
If don't upload no sound the 'sample_960x540.mp4' , the remaining two videos will be uploaded successfully

from pyrogram import Client
from pyrogram.types import InputMediaPhoto, InputMediaVideo

api_id = xxxx
api_hash = "xxxx"

'''
I use Sample MP4 from filesamples.com/formats/mp4
https://filesamples.com/samples/video/mp4/sample_960x400_ocean_with_audio.mp4
https://filesamples.com/samples/video/mp4/sample_960x540.mp4
https://filesamples.com/samples/video/mp4/sample_1280x720.mp4
'''

with Client("xxxx", api_id, api_hash) as client:
    client.send_media_group(
        "me",
        [
            InputMediaVideo('sample_960x400_ocean_with_audio.mp4', caption="a video"),
            InputMediaVideo('sample_960x540.mp4'), #This is a video without sound
            InputMediaVideo('sample_1280x720.mp4'),
        ]
    )

Traceback

The full traceback (if applicable).

Traceback (most recent call last):
  File ".\tgup_test.py", line 15, in <module>
    client.send_media_group(
  File ".\Programs\Python\Python39\lib\site-packages\pyrogram\sync.py", line 56, in async_to_sync_wrap
    return loop.run_until_complete(coroutine)
  File ".\Programs\Python\Python39\lib\asyncio\base_events.py", line 642, in run_until_complete
    return future.result()
  File ".\Programs\Python\Python39\lib\site-packages\pyrogram\methods\messages\send_media_group.py", line 272, in send_media_group
    r = await self.send(
  File ".\Programs\Python\Python39\lib\site-packages\pyrogram\methods\advanced\send.py", line 77, in send
    r = await self.session.send(
  File ".\Programs\Python\Python39\lib\site-packages\pyrogram\session\session.py", line 425, in send
    return await self._send(data, timeout=timeout)
  File ".\Programs\Python\Python39\lib\site-packages\pyrogram\session\session.py", line 395, in _send
    RPCError.raise_it(result, type(data))
  File ".\Programs\Python\Python39\lib\site-packages\pyrogram\errors\rpc_error.py", line 78, in raise_it
    raise getattr(
pyrogram.errors.exceptions.bad_request_400.MediaEmpty: [400 MEDIA_EMPTY]: The media you tried to send is invalid (caused by "messages.SendMultiMedia")

Process finished with exit code 1

[delivrance]

Telegram "limitation", not a Pyrogram issue - the error comes straight from the server. Videos inside albums need to have an audio stream, otherwise they are considered animations/gifs.