Update README.md

README.md

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 ## Description
-7 million global genuine high-quality videos. All are genuine video works released by photographers around the world. 6 million of them are described in English and 1 million in Chinese. They cover a variety of categories such as people, landscapes, animals, etc. The resolution is above 1080p.
+This dataset is just a sample of 7 million global genuine high-quality videos(paid dataset). All are genuine video works released by photographers around the world. 6 million of them are described in English and 1 million in Chinese. They cover a variety of categories such as people, landscapes, animals, etc. The resolution is above 1080p.
 
-For more details, please refer to the link: https://www.nexdata.ai/datasets/speechrecog/1329?source=Huggingface
+For more details & to download the rest of the dataset(paid),please refer to the link: https://www.nexdata.ai/datasets/speechrecog/1329?source=Huggingface
 
 ## Specifications