Cannot render gif of video with a cropped screen due to RangeError

[wdspider]

Steps to repro:

1. Open site in latest MS Edge
2. Record a screen
3. Once recording is stopped, choose a part of the screen to crop to
4. Press render button

Expected:
Video of cropped screen successfully rendered into gif

Actual:
Progress bar indefiniately displays along with this console error:

[João Moreno]

Strange for two reasons:

1. I can't reproduce
2. There's no way the byte length of Uint32Array would not be a multiple of 4 given this:

   gifcap/encoder/gifencoder.js

   Line 31 in b060ef9

    const result = new ArrayBuffer(4 * box.width * box.height); 

Can you reliably reproduce this?

[wdspider]

I could reliably reproduce this the day I created the ticket. I attempted to do it around 7 times which is what led me to take the time to create the ticket. However, I just tried it again today, and it seems to be working as desired now. As such, I'm going to close this ticket since I can't pinpoint what could be different between then and now.

[João Moreno]

I just reproduced it! box.width and box.height can be fractional.