How to exclude conversion in 1920x1080 resolution in paperclip-streamio-ffmpeg if video size is 1280x720?

Question

Ruby on Rails

How to exclude conversion in 1920x1080 resolution in paperclip-streamio-ffmpeg if video size is 1280x720?
We need a universal solution, because they upload videos of different sizes.
And in order not to take up extra memory on the server and not waste its resources, I would like to implement such an option.
https://github.com/daichirata/paperclip-streamio-f...
Here it is indicated that you can add the ">" sign in the papperclip encoding version and then those resolutions that are larger than the width of the uploaded video will be skipped.
But in this case, the converted file is duplicated, which was closer in size.
It would be great if someone could advise.
As an option, I'm considering setting a condition, but I don't fully understand how to get the width of the uploaded video.
Example

has_attached_file :media,
                  processors: [:transcoder],
                  styles: {
                    thumb: {
                      format: :jpeg,
                      convert_options: {
                        resolution: "640x360",
                        screenshot: true,
                        seek_time: 3,
                      },
                      transcoder_options: {
                        preserve_aspect_ratio: :width
                      }
                    },
                    large: {
                      format: :mp4,
                      convert_options: {
                        resolution: "1920x1080",
                        video_codec: "libx264",
                        frame_rate: 25,
                        video_bitrate: 4000,
                        x264_preset: "slow"
                      }
                    },
                    big: {
                      format: :mp4,
                      convert_options: {
                        resolution: "1280x720",
                        video_codec: "libx264",
                        frame_rate: 25,
                        video_bitrate: 2500,
                        x264_preset: "slow"
                      }
                    },
                    medium: {
                      format: :mp4,
                      convert_options: {
                        resolution: "856x480",
                        video_codec: "libx264",
                        frame_rate: 25,
                        video_bitrate: 1200,
                        x264_preset: "slow"
                      }
                    },
                    small: {
                      format: :mp4,
                      convert_options: {
                        resolution: "640x360",
                        video_codec: "libx264",
                        frame_rate: 25,
                        video_bitrate: 800,
                        x264_preset: "slow"
                      }
                    }
                  }