Generating previews for animated webp images fails

[pawanrai9999]

Steps to reproduces bug:-

1. Upload files to nextcloud(which include .jpeg, .gif, .webp)
2. run php occ preview:pre-generate
3. delete the .webp file
4. run php occ preview:pre-generate
5. the issue goes away

Nextcloud Log: -
{ "reqId": "QLuWknpRbkVx8NK49QA6", "level": 3, "time": "2021-11-11T14:58:35+00:00", "remoteAddr": "", "user": "--", "app": "PHP", "method": "", "url": "--", "message": "gd-webp cannot allocate temporary buffer at /var/www/html/lib/private/legacy/OC_Image.php#620", "userAgent": "--", "version": "22.2.0.2", "id": "618dc9bac3434" }

I guess this is similar issue.

Uploading this file definitely causes issues

[pawanrai9999]

PHP Docs state that animated webp are not supported.

PHP GD and WebP support:
Normal WebP (VP8): supported since PHP 5.4
Transparent WebP or alpha transparency (VP8X, VP8L): supported since PHP 7.0
Animated WebP (VP8X): not supported at all.

PHP Doc

We need to detect animated webp and stop scanning them.

[szaimen]

Hi, please update to 24.0.9 or better 25.0.3 and report back if it fixes the issue. Thank you!

My goal is to add a label like e.g. 25-feedback to this ticket of an up-to-date major Nextcloud version where the bug could be reproduced. However this is not going to work without your help. So thanks for all your effort!

If you don't manage to reproduce the issue in time and the issue gets closed but you can reproduce the issue afterwards, feel free to create a new bug report with up-to-date information by following this link: https://github.com/nextcloud/server/issues/new?assignees=&labels=bug%2C0.+Needs+triage&template=BUG_REPORT.yml&title=%5BBug%5D%3A+

[lachlanshoesmith]

i'm still able to reproduce this issue with animated webp files on 25.0.3 upon running occ preview:generate-all: PHP Fatal error: gd-webp cannot allocate temporary buffer in /var/www/html/lib/private/legacy/OC_Image.php on line 722.