Usually this video editing software costs $ 149 but is currently free for a short time. so users can easily get a video quality as you like.

Transform: Rotates the environment map around the X, Y and Z axes.HitFilm Express 2018 is a professional video editing and editing software that provides all the necessary tools to edit, create effects, 3D mosaics, filters.

You can compensate for that distortion here. Environment mapping wraps your selected image into a sphere, which sometimes results in a distorted image.

Scale Ratio: Adjust the width to height ratio.

Scale: Changes the size of the image within the reflections, to simulate the distance between the raindrops and the environment.

Amount: The intensity of the environment map reflections.

Source: Select the source layer you want to use as your environment map.

Use Environment Map: Toggles Environment Map on and off.

By default, the layer the effect is applied to is used as the Environment Map. The environment Map settings define what is contained in those reflections. Raindrops will contain micro reflections of their surroundings.

Layer Distance: Adjusts the distance of the image outside of the glass.

Thicker Glass will create more glare on the image. Glass Thickness: changes the glass distortion applied to the image.Layer Scale: Adjusts the scale of the source image within the effect.This is the default method, and usually gives the best result. Mirror: Applies a mirrored version of the image to each edge.Tile: Creates rows and columns of the image, to fill the edges.the original layer will be visible around the effect. Layer Tiling: Choose how the area around the image will be filled, when it is scaled smaller than the frame.The Rendering settings control how this is handled. The appearance of looking through glass involves subtly distorting the original image. Seed: Randomly changes the pattern of the raindrops.Rain Drop Size: Changes the size of the rain drops.Drops Per Second: Adjusts the number of new drops that hit the frame each second, to control how hard it is raining.Use the simulation controls to set the size and quantity of raindrops.

The Rain On Glass effect allows you to quickly simulate the appearance of looking through a window covered with raindrops.

Hitfilm express adding rain 2018