Bug: pixel hash not calculated correctly for

Ezgif created animated png files seem problematic, e.g.

asset #20893253
asset #17827195
asset #16793059 (nsfw)

their pixel hash is just their normal md5, if I change the metadata, their pixel hash change too

That's normal and the same for all animated files.

• Return the file's MD5 if the image is animated or corrupt.

https://github.com/danbooru/danbooru/commit/1378c6fd9bf02b5f4b1c66da096e1f3ac99d0d82

I see. Thanks. The linked document is sad, it says that some media formats (e.g. jpg) do not determine their output image exactly, but have many multiple valid outputs. Not good.