Nextcloud重建Preview

Problem & Summary

• https://ownyourbits.com/2019/06/29/understanding-and-improving-nextcloud-previews/

• https://github.com/nextcloud/previewgenerator/blob/main/README.md

Solution

首先安装 install app "Preview Generator"

# 
# https://apps.nextcloud.com/apps/previewgenerator

sudo -u www php  /www/wwwroot/nc.ck.mk/occ config:system:set preview_max_x --value 1024
sudo -u www php  /www/wwwroot/nc.ck.mk/occ config:system:set preview_max_y --value 1024
sudo -u www php  /www/wwwroot/nc.ck.mk/occ config:app:set previewgenerator squareSizes --value="32 256"
sudo -u www php  /www/wwwroot/nc.ck.mk/occ config:app:set previewgenerator widthSizes  --value="256 384"
sudo -u www php  /www/wwwroot/nc.ck.mk/occ config:app:set previewgenerator heightSizes --value="256"
sudo -u www php  /www/wwwroot/nc.ck.mk/occ config:system:set jpeg_quality --value 60
sudo -u www php  /www/wwwroot/nc.ck.mk/occ config:app:set preview jpeg_quality --value="60"


cd /www/wwwroot/nc.ck.mk/data/
rm -rf appdata_*/preview

sudo -u www php  /www/wwwroot/nc.ck.mk/occ files:scan-app-data
# first time
sudo -u www php  /www/wwwroot/nc.ck.mk/occ preview:generate-all -vvv
# add to cron
sudo -u www php  /www/wwwroot/nc.ck.mk/occ preview:pre-generate -v