@dp.message(ContentTypesFilter(content_types=['voice', 'audio', 'video', 'video_note']))
async def dsfsfd(message: types.Message):

file_size = message.document.file_size // 1048576

@dp.chat_member_handler()
async def chat_memberupdate(message: types.ChatMemberUpdated):
    try:
        old = message.old_chat_member
        new = message.new_chat_member
        if new.status == "left":
            await bot.send_message(new.user.id, "<i>❌ Siz ba'zi kanallarimizdan chiqib ketdingiz!\nIltimos qaytadan kanalga obuna bo'ling va chiqib ketmang ❗️\n\nAks holda konkursimizdan chetlatilasiz 😣</i>")
    except:
        pass
if __name__ == '__main__':
    executor.start_polling(dp, on_startup=on_startup, skip_updates=True, allowed_updates=types.AllowedUpdates.all())