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| __IMPORTANT:__ |
| Since August 2023 we've found ImageMagick to be unstable or completely incompatible with javaexec. We strongly recommand to use __[GraphicsMagick|http://www.graphicsmagick.org/]__ instead. It's a compatible, well maintained forked version of ImageMagick, their dev team boasts 0 bugs per 1000 lines of code. |
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| first (usually title) page is rendered, for videos, 10 slides evenly sampled along the duration time.\\ |
| first (usually title) page is rendered. For videos, 10 slides evenly sampled along the duration time, moving the mouse cursor horizontally over the thumbnail will play the slides.\\ |
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| Support for GraphicsMagic only exists from CrushFTP __v10.5.0 Build: 5__ and upwards, previous versions need to be updated.\\ |
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| On __Windows__ platforms will need to user GraphicsMagick mandatorily, for the recent versions of ImageMagick will not work with Java no more. There are options, either use the binary installer, or use the portable __.zip__ package and deploy it somewhere.\\ |
| On __Windows__ platforms will need to use GraphicsMagick mandatorily, for the recent versions of ImageMagick will not work with Java no more. There are options, either use the binary installer, or use the portable __.zip__ package and deploy it somewhere.\\ |
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| GraphicsMagick [http://www.graphicsmagick.org/download.html|http://www.graphicsmagick.org/download.html]\\ |
| Ghostscript [https://ghostscript.com/releases/gsdnld.html|https://ghostscript.com/releases/gsdnld.html]\\ |
| GraphicsMagick: [http://www.graphicsmagick.org/download.html|http://www.graphicsmagick.org/download.html]\\ |
| Ghostscript: [https://ghostscript.com/releases/gsdnld.html|https://ghostscript.com/releases/gsdnld.html]\\ |
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| We can display additional information under the thumbnails on hover, if __exiftool__ is deployed. It's not a mandatory component, but if needed, on Linux can install it from the apps repository, on Windows, download the binary from [https://exiftool.org/|https://exiftool.org/], drop it into the GraphicsMagick binary's parent folder. On Mac OS, need to download and install from the __dmg__ package. |
| We can display additional information under the thumbnails, and potentially all image metadata in the [Quickview|quick Preview] perspective, if __exiftool__ is deployed. It's not a mandatory component, Preview works fine without.\\ |
| On Linux can install it from the official apt, yum, dnf, etc. repository. |
| On newer versions of Windows, the original Phil Harvey build may not work, in that case need to use the alternate build\\ |
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| Original: [https://exiftool.org/|https://exiftool.org/]\\ |
| Alternate(includes Perl runtime): [https://oliverbetz.de/pages/Artikel/ExifTool-for-Windows|https://oliverbetz.de/pages/Artikel/ExifTool-for-Windows]\\ |
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| Deploy the installer version, or download the portable zip, unpack and drop it into the GraphicsMagick binary's parent folder.\\ |
| On Mac OS, need to download and install from the __dmg__ package.\\ |
| \\ |
| To actually display the EXIF data, need to configure in [User Manager|User Manager]->Available Customizations section the __Display EXIF info keys in quick view__ option.\\ |
| To edit the EXIF data, need to enable the __Editable EXIF info keys__ option.\\ |
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| [{Image src='usermanager_config1.jpg' width='1440' height='..' align='left' style='..' class='..' }] |
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| Holding down the Alt key while click the Add Folder button allows adding remote items (FTP://, SMB3://, etc.)\\ |
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| Holding down the Alt key or Shift key while click the Add Folder button allows adding remote items (FTP://, SMB3://, etc.)\\ |
| \\ |
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| To enable __both images/documents and videos preview__, need to add one instance of the Preview config for each with the appropriate preset, using the top right corner __Add Config__ button.\\ |
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| ;Conversion utility presets:as mentioned above, to choose a conversion preset for images, videos based on the available utility and OS platform |
| ;Supported file extensions:the file extensions we'll generate thumbnails for. For those unsupported or not listed, we'll render the default icons |
| ;Command Line:the commands the Preview Scanner issues to call the conversion utility. |
| ;Working Directory:the parent directory path of the conversion utility package's main binary |
| ;Environment Variables:some of the conversion tools may read additional parameters from the shell environment these run within, such can be forced here |
| ;Frames:only for video preview, this sets the number of slides we generate |
| ;Info command line:only for video preview, this sets the command to query the video length. the returned value is divided internally by the Frames value to generate the position of the slide |
| ;Get image EXIF info:only used with exiftool, the command to query image files' metadata |
| ;Set image EXIF info:only used with exiftool, the command to update image files' metadata |
| ;Scan subdirectories of directories in below list:toggles recursive scan of the data directories |
| ;Delete thumbnails for files that no longer exist:toggles automatic cleanup of the Previews thumbnail database. May need to turn off in case the VFS backend is unstable. |
| ;Scan interval in minutes:the frequency of the Preview Scanner's scheduler. The more aggressive, the quicker new files are detected at the cost of higher the CPU load |
| ;Threads:multithreaded scanner, needs to be set 2x the number of CPU cores |
| ;Timeout:timeout of a scanner thread, if reached, the failing file will also be blacklisted |
| ;Previews Path:the location of the Preview thumbnails database, by default the CrushFTP10 installation directory. Need to relocate to a separate drive if the users' VFS directory structure is large |
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| ;term:definition text |
| !Troubleshooting:\\ |
| Issues with Preview can be traced in the main server log, the __Log__ tab reveals a filtered stream on Preview specific activity.\\ |
| \\ |
| [{Image src='preview_log.jpg' width='1440' height='..' align='left' style='..' class='..' }] |
