Cannot open webp files

[gregzaal]

I believe webp is meant to be supported now, but I still get "The file xyz.webp could not be read!" errors when opening any webp file.

Example file:
thumbnail.zip

[sylikc]

@gregzaal please try #4 (comment)

[gregzaal]

Do you mean adding webp to the config FilesProcessedByWIC=*.wdp;*.hdp;*.jxr;*.webp ?

This doesn't seem to help.

[OCD-Man]

I know there is no problem opening webp files.

So when I got a blank window when opening the file you attached in your post in JPEGView, the first thing I did was open it in a hex editor to look at the text portion of the hex editor window to see if the header info showed it was a webp file or something else.

The header clearly says it is a png file.

So just rename your file as PNG and it will open in JPEGView.

Normally if you rename a file to a different extension, the program just detects what kind of file it is from the info in the file such as the header, and not from the file extension which is just to tell the operating system which program should open the file (which can be seen by changing this file extension to .jpg). But webp has it's own dll file which makes me think that webp support is more of an addon to the program which I guess is why opening webp files is programmed differently. Still JPEGView should instead read the header of the webp file to determine if it is webp before processing it as webp, even if initially JPEGView attempts to open it as webp based on the file extension.

But that should be put in a to do list, and as for this issue, I guess it can be closed.

[LaurentGrenet]

Hello all, (and in particular hello @sylikc )

what is VERY surprising with Webp management by JPEGView is that if we have a look on file provided by @gregzaal in its initial message just above, and about which one @OCD-Man says it's actually a png file (according what we can see as its actual content) is the fact that JPEGView is able to open it in any case except if its extension is .webp !
If you rename the file as [anything].jpeg, [anything].png, [anything].bmp, or even [anything].[anyextension] except webp, or even no extension at all, JPEGView opens it succesfully ! Only if it's named [anything].webp that JPEGView fails opening it !
Strange, no ?

And on the other hand, all files "natively Webp" (ie. that are proposed to be stored with a .webp extension when right-click + save image as", eg. the one proposed in https://en.wikipedia.org/wiki/WebP) that I have downloaded from the WEB have all been correctly opened by JPEGView... even when named *.webp (and also if renamed *.png, *.bmp, *.jpg, *.[whateveryouwant] )

VERY strange, no ?

[sylikc]

Closed by #93