Auto action to create a retro videotape-style effect.
Create a retro feel for your drawings, similar to the signal degradation produced by analog tape formats like VHS. Creates a new file to work on, so it won't clog up your undo history for the original file.






Emulates a number of the technical details of VHS to the best of my ability, including decreasing the overall resolution, chroma subsampling, chromatic aberration, hue shifting, and noise. I may attempt to add more details at some point.
Instructions
Open a drawing and run the auto action. Choose a name and location to save the new file. The "Change image size" window will pop up. The default is good for higher-resolution files, but for files smaller than roughly 4K you may want to move the scale closer to 1 (defaults to .22, which will make a 4K canvas 480px tall), or lower it for higher resolutions. Try it out a few times with different settings to see what you like.
A new file will be created with the filtered image. If you don't like the results, you can delete the file and no changes will have been made to your original drawing.
A new file will be created with the filtered image. If you don't like the results, you can delete the file and no changes will have been made to your original drawing.
Samples

Before: Starting resolution 4K (3840x2160 px)

After: Run with default settings (scale = 0.22, vertical resolution = 480px)

Before: Starting resolution = 1080p (1920x1080 px)

After: Run with scale = 0.75 (output resolution = 1440x810 px)

Before: Starting resolution = A4 300 dpi (2480x3508 px)

After: Run with scale = 0.75 (output resolution = 1860x2631 px)
About Auto Actions
If you've never used an Auto Action before, here's some guides on how to use them:
https://support.clip-studio.com/en-us/faq/articles/20210077
https://support.clip-studio.com/en-us/faq/articles/20220025