gistfile1.txt

const uploadFile = (file, callback) => {
  const date = Date.now();
  const signature = `timestamp=${date}`;
  RNFetchBlob.fetch(
    'POST',
    'https://api.cloudinary.com/v1_1/BUCKET_NAME/video/upload',
    {
      'Content-Type': 'multipart/form-data'
    },
    [
      {
        name: 'file',
        filename: 'vid.mov',
        data: RNFetchBlob.wrap(file)
      },
      {
        name: 'api_key',
        data: ''
      },
      {
        name: 'timestamp',
        data: date
      },
      {
        name: 'signature',
        data: sha1(`${signature}{ANOTHER_VALUE__NEED_TO_READ_DOCS)
      }
    ]
  )
    .then(res => {
      const data = JSON.parse(res.data);
      const videoUrl = data.url;
      callback(videoUrl);
    })
    .catch(err => {
      console.log(err);
    });
};