MVIMG (JPG Motion Picture) to GIF converter
For permanent links you can use: https://ezgif.com/mvimg-to-gif?url=https://example.com/source-image.gif
Online MVIMG (JPG MP) to animated GIF converter
MVIMG or JPG motion photo is a file format generated by some Android phones, capturing an image together with a small video, up to 3 seconds. These files are usually distinguished by MVIMG_ prefix or _MP.JPG in their filenames. They consist of a JPG image and a short MP4 video merged in a single file.
Unfortunatley these files are rarely supported outside Android devices, but you can use this tool to convert MVIMG JPG files to plain old animated GIFs.