On 08/21/2016 06:01 AM, Owen Cook wrote:

I noticed in the latest git a lot of stuff which suggests that gimp should open webp, and export to webp.

Is this correct, and if so how do you activate it. Currently I get "Unknown file type" on opening, and webp is not in the list of export formats.

On a possibly related note, libwebp-0.4.2 is installed on my system (Gentoo Linux), but when configuring GIMP this message is printed to the terminal: WebP: no (WebP not found)

Thinking 0.4.2 might be too old, I downloaded libwebp-0.5.1 from https://developers.google.com/speed/webp/docs/compiling#building, and installed it in /usr/local, and then re-installed babl/gegl/libmypaint/gimp starting from "./autogen.sh". But GIMP still isn't finding WebP. GEGL finds WebP, but GIMP doesn't.

Is there some other library that might be required before GIMP can find WebP on the system? Or a magic command that says "look here"?

Best, Elle

In case it's relevant, here's the configuration summary from compiling libwebp-0.5.1:

WebP Configuration Summary --------------------------

Shared libraries: yes Static libraries: yes
Threading support: yes
libwebp: yes
libwebpdecoder: no
libwebpdemux: no
libwebpmux: no
libwebpextras: no

Tools:
cwebp : yes
Input format support
====================
JPEG : yes
PNG : yes
TIFF : yes
WIC : no
dwebp : yes
Output format support
=====================
PNG : yes
WIC : no
GIF support : yes
anim_diff : no
gif2webp : no
webpmux : no
vwebp : no

Elle,

Works fine here on my Mac McGimp latest build as available on my website. I got the sample images from https://developers.google.com/speed/webp/gallery1

Thanks, Partha

On Sun, Aug 21, 2016 at 4:15 PM, Elle Stone wrote:

On 08/21/2016 06:01 AM, Owen Cook wrote:

I noticed in the latest git a lot of stuff which suggests that gimp should open webp, and export to webp.

Is this correct, and if so how do you activate it. Currently I get "Unknown file type" on opening, and webp is not in the list of export formats.

On a possibly related note, libwebp-0.4.2 is installed on my system (Gentoo Linux), but when configuring GIMP this message is printed to the terminal: WebP: no (WebP not found)

Thinking 0.4.2 might be too old, I downloaded libwebp-0.5.1 from https://developers.google.com/speed/webp/docs/compiling#building, and installed it in /usr/local, and then re-installed babl/gegl/libmypaint/gimp starting from "./autogen.sh". But GIMP still isn't finding WebP. GEGL finds WebP, but GIMP doesn't.

Is there some other library that might be required before GIMP can find WebP on the system? Or a magic command that says "look here"?

Best, Elle

In case it's relevant, here's the configuration summary from compiling libwebp-0.5.1:

WebP Configuration Summary --------------------------

Shared libraries: yes Static libraries: yes
Threading support: yes
libwebp: yes
libwebpdecoder: no
libwebpdemux: no
libwebpmux: no
libwebpextras: no

Tools:
cwebp : yes
Input format support
====================
JPEG : yes
PNG : yes
TIFF : yes
WIC : no
dwebp : yes
Output format support
=====================
PNG : yes
WIC : no
GIF support : yes
anim_diff : no
gif2webp : no
webpmux : no
vwebp : no

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On 08/21/2016 04:15 PM, Elle Stone wrote:

In case it's relevant, here's the configuration summary from compiling libwebp-0.5.1:

WebP Configuration Summary --------------------------

Shared libraries: yes Static libraries: yes
Threading support: yes
libwebp: yes
libwebpdecoder: no
libwebpdemux: no
libwebpmux: no
libwebpextras: no

Tools:
cwebp : yes
Input format support
====================
JPEG : yes
PNG : yes
TIFF : yes
WIC : no
dwebp : yes
Output format support
=====================
PNG : yes
WIC : no
GIF support : yes
anim_diff : no
gif2webp : no
webpmux : no
vwebp : no

Hmm, there is the problem:
0050-INSTALL-libwebp-must-be-built-with-enable-libwebpmux.patch

For whatever reason libwebp wasn't built with webpmux. Perhaps that's an option that can be configured when installing libwebp.

Best, Elle