Creating vertical video pins with Spark (Pinterest)

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I use Pinterest to promote my work, but I'm not sure how to make a vertical video in Spark. Currently, I download pins from another account through the Pinterest video downloader. However, I would like to create my own, but I only see the options for horizontal and square. Is this feature not available in Spark? All other social video creators seem to have it  

Thanks,

By @summit5C74

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I use Pinterest to promote my work, but I'm not sure how to make a vertical video in Spark. Currently, I download pins from another account through the Pinterest video downloader. However, I would like to create my own, but I only see the options for horizontal and square. Is this feature not available in Spark? All other social video creators seem to have it  

Thanks,

i am still wating for response 
By @summit5C74