Screentogif: [Feature request] Color limiter

[vatterspun]

Disclaimer: There might be a way to do this properly but at least with the tools I used, lowering colors didn't seem to help, probably because it creates additional changes between frames.

I got this idea while responding to #299.

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Background: I use ScreenToGif to help demonstrate short processes and for writing up bug reports, frequently I don't need precise detail to explain what I'm trying to do. Currently ScreenToGif saves to the 256 color standard. With fewer colors, I think you might see file sizes decrease.

I tried to put together a process to demonstrate how taking images recorded in ScreenToGif and using other tools with converters that remove colors would result in lower file sizes. Strangely, I tried the following workaround and -- for reasons I can't explain, none if to worked. Fewer colors (black and white, 64 color, 8 color even) strangely resulted in LARGER files sizes. I really can't explain why as I've done this previously with other GIF animation tools with very different results.

Workaround:

1. Record something and save as project (such as _Recording.STG_)
2. Unzip the .STG file using a program like 7zip to get access to the individual images
3. Run with a program like XnConvert and add all the files
4. Click Add Action - Reduce Colors (make sure to disable dithering)

1. Select an output folder and convert
2. Re-import back into the program (go to the output folder and select all)
3. Save to GIF or other format

Output

256 colors:

Black and White:

Note that converting to APNG format did nothing. The files with more colors were still somehow smaller. Maybe it's the converter I was using.

[NickeManarin]

With the encoder v2.0 you can reduce the number of colors.

[vatterspun]

Wow, it was that easy? Jeeze.