Discord, Skype, Teamspeak, Curse- don't have good (if any) webm nor mp4 support and these tend to be what I- and most of my friends that use ShareX as a utility- use.Doing frame by frames with a webm or mp4 is incredibly painful and chews through limited RAM, a dump of captures of the frames causes the latter pair of issues. I need to be able to frame by frame the capture, without opening dozens of files / constantly going to file system and opening a file.These phones also don't do adequately with mp4s in my experience- though for both of these, it's possible that I just wasn't doing enough testing or was very unlucky in the selection of phones I could access. Phones that I have had the ability to test on have had rather haphazard compatibility with the file format. Making video GIFs is really an abuse of the specification (even though it’s now so common that most people probably don’t realize that, just as most people don’t realize GIFs and JPEGs use different kinds of compression, and are meant to be used on different kind of images).People using Safari on iOS / Apple software at large is, unfortunately, not the only set of groups I am considering when I say 'sharing clients'. It certainly wasn’t meant for video, and that’s why the field encodes delay, and not frame rate. Note that this extension was meant for a handful of frames with a delay on the order of seconds (maximum delay is about 600 seconds), so 1/100 seconds resolution was ample. Which means the smallest value is 1 for a image rate of 100 FPS (this will be difficult to render on most monitors…), and the next smallest value is 2 for an image rate of 50 FPS, and the next value is 3 for an image rate of 33.3 FPS. This field may be used in conjunction with the User Input Flag field. The clock starts ticking immediately after the graphic is rendered. Vii) Delay Time – If not 0, this field specifies the number of hundredths (1/100) of a second to wait before continuing with the processing of the Data Stream.

The GIF98a specification says in the section about the Graphics Control Extension

Ffmpeg gif rate 60 frame