* Adjusts the video size so we can make a centered square crop without * including whitespace. * @param {number} width The real width of the vid

* Crops an image tensor so we get a square image with no white space. * @param {Tensor4D} img An input image Tensor to crop.

* Checks if the current platform is iOS. * * @returns true if the platform is iOS, false otherwise.

* Checks if the current platform is a mobile device. * * @returns true if the platform is a mobile device, false otherwise.