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. Can be used to make a new file, or a new layer on 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. There are now two versions: "Apply tape effect (new file)", which will create a new file to operate on (the mode of operation of the original version of this filter), or "Apply tape effect (same file)", which will work on the original file and create new layers for the filtered version. It's somewhat more difficult to work on the same file, but may be more convenient for you.
New File version:
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.
Same File version:
The "Scale layer" tool will appear. As with the old version of the filter, set the scale to whatever you prefer (default 22%, same as old version). Experiment to find the result you like best. After the filter has finished its other steps, the "Scale layer" tool will open again. Scale the layer back up to match the size of the original image. How much you have to scale will depend on what settings you chose for the first Scale step. You can do some math to find the exact required number to get the precise same size, or just eyeball it (the easiest way).
If you don't like the results, just delete the created layers and try again.
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 4K (3840x2160 px)

After: Run with scale = 0.5 (1920x1080 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
Old version