Hello! Today I will show you how to make animated textures!

First, find the resource pack in which you want to make your animated textures in.
Now open up an image editor, such as Paint.net or Photoshop.
For each frame, you will need to have at least a 16x16 image size. Each frame is kept in the same image file. For example:

Now create a new .txt file in the same folder as the item image.
Rename it to a .mcmeta file.
Make sure it is the name of the item image such as diamond_sword.png, but instead diamond_sword.png.mcmeta.
Open in up in a program such as Notepad.
Now copy and paste this code into the file.
{"animation":{"frametime":1,"frames":[0,1,2,1,0]}}
This will be depending on how many frames you have.
The frames will rotate every 1 tick, and will go from 0 to 2 and then back again.
Now the item will be animated in game!

Credits:
By Code202

Notes:
For 1.11.2+