Makes black background WebP from transparent PNG

[dewib77]

Actual behaviour

Generating WebP pictures from my transparent PNGs makes non-transparent WebP images with black background

Example: This PNG https://oberland.la/media/image/c9/33/bd/everbodys-darling-depp_lea_schwarz_600x600.png becomes this WebP https://oberland.la/media/image/65/e1/06/everbodys-darling-depp_lea_schwarz_600x600.webp

Expected behaviour

create transparent WebP from transparent PNG

Environment

Shopware 5.5.10 running on PHP 7.2 wiht Google cwebp an PHP GD installed

Checklist

• I have checked all issues and haven't found a similar report.
• I am using the latest stable version of this plugin.

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♥ ANY INCOMPLETE REPORT WILL BE CLOSED RIGHT AWAY ♥

[shyim]

Did u used PHP GD or WebP?

[dewib77]

Not sure, WebP I Think. Started the process with this command frosh:webp:generate

[shyim]

Can you execute frosh:webp:status on cli and show the result?

[dewib77]

result is: "[OK] Webp is available"

[shyim]

Using PHP GD and cwebp both looks the generated picture good for me.

Would it be possible to get access to the system to debug that?

[dewib77]

Ok. How share access data confidentially (not on Github)?

…

Am 22.02.2020 um 12:24 schrieb Shyim ***@***.***>: Using PHP GD and cwebp both looks the generated picture good for me. Would it be possible to get access to the system to debug that? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#55?email_source=notifications&email_token=ANN3ZWIPAAI2Q2RF265L2XTREEDQLA5CNFSM4I7ZH7SKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEMU6ABQ#issuecomment-589946886>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ANN3ZWJ4CEBFZW4LFX47LO3REEDQLANCNFSM4I7ZH7SA>.

[shyim]

You can send me a mail

[cm-springlane]

We have the same problem, were you able to find a resolution?

[shyim]

Didn't get any image where i can reproduce that 😢

[cm-springlane]

Oooh we have lots... Let me see if I can reproduce on our staging server and give you access.

[cm-springlane]

Hi shyim, I have reproduced it on our staging system. Should I connect you with our sysadmin for getting you access or can you use the shopware access that already exists?

[cm-springlane]

Feel free to email me directly at cm-github-froshwebp@sp47.de

[thotzl]

i am a little bit late, but this may help:

i had the same issue. it was caused by an old libwebp version, that had problems with alpha-layers.
updating the php libwebp package worked for me (should be the fix for you too)

[shyim]

Do you know maybe the Version Number? So I can include an version check

[thotzl]

Do you know maybe the Version Number? So I can include an version check

Sorry, it's been a while. I can't remember exactly. I googled a bit and found this on Wikipedia:

• "On 18 November 2011, Google began to experiment with lossless compression and support for transparency (alpha channel) in both lossless and lossy modes; support has been enabled by default in libwebp 0.2.0 (16 August 2012)."

• and this in the google sources:
  https://chromium.googlesource.com/webm/libwebp/+/46e18c0a256c486cfd5360f556a90a5f6463c4d9/NEWS

• and in a different github project:
  Webp image with alpha/transparency filled with black thumbor/thumbor#501 (comment)

I guess it would be enough to test on version > 0.4.2

[shyim]

Thanks