In my opinion, dolphin should display symbols at the bottom of the icons, like:
- Activities the icons is related
- Tag icons (should also been implemented icon for tag setting)

Additionally, you should also display comment, when mouse hover file for more than some time,.

Lachu wrote:In my opinion, dolphin should display symbols at the bottom of the icons, like:
- Activities the icons is related
- Tag icons (should also been implemented icon for tag setting)

Additionally, you should also display comment, when mouse hover file for more than some time,.

Dolphin settings > General > Show tooltips will show the comments, tags and other information when the mouse hovers over the file.


Full image: https://imgur.com/eA5kDpT

Tag information etc. can be added to the thumbnail image. Either with the thumbnailer or with an image editing context menu.

Scripting KDE video preview thumbnails

Random preview / tags&duration / Embedded poster:



Basic

Thumbnail:
https://docs.kde.org/trunk5/en/kdenetwo ... index.html

KF5 API:
https://api.kde.org/frameworks/kio/html ... eator.html

Thumbnails Specification:
https://www.freedesktop.org/wiki/Specif ... humbnails/


Keneric

Keneric KDE/KF5 thumbnailer: https://store.kde.org/p/1080815/

The Keneric KDE (KF5) thumbnailer is a generic thumbnailer. It is intended to be used when there is no dedicated KDE thumbnailer and there is a fast and simple way to get the thumbnail image (oneliner).

The Keneric can be used if you want to get more options to get the preview thumbnails.


Datasources

Code: Select all

$ baloo_filemetadata_temp_extractor
Usage: baloo_filemetadata_temp_extractor url

Arguments:
  url


Baloo is part of typical KDE installation.

Code: Select all

$ getfattr --help
getfattr 2.4.48 -- get extended attributes
Usage: getfattr [-hRLP] [-n name|-d] [-e en] [-m pattern] path...
  -n, --name=name         get the named extended attribute value
  -d, --dump              get all extended attribute values
  -e, --encoding=...      encode values (as 'text', 'hex' or 'base64')
      --match=pattern     only get attributes with names matching pattern
      --only-values       print the bare values only
  -h, --no-dereference    do not dereference symbolic links
      --absolute-names    don't strip leading '/' in pathnames
  -R, --recursive         recurse into subdirectories
  -L, --logical           logical walk, follow symbolic links
  -P  --physical          physical walk, do not follow symbolic links
      --version           print version and exit
      --help              this help text


getfattr is part of the Attr: http://savannah.nongnu.org/projects/attr

Code: Select all

$ mediainfo --help
MediaInfo Command line,
MediaInfoLib - v18.08.1
Usage: "mediainfo [-Options...] FileName1 [Filename2...]"

Options:
--Help, -h


mediainfo is part of MediaInfo: https://mediaarea.net


More:

How to get video duration in seconds?
https://superuser.com/questions/650291/ ... in-seconds

Extract video cover/thumbnail from file with embedded cover using ffmpeg
https://superuser.com/questions/1328204 ... ing-ffmpeg

Edit, compose, or convert bitmap images - ImageMagick
https://www.imagemagick.org/script/index.php


Video thumbnailer example

This example is using ffmpegthumbnailer:

Code: Select all

$ ffmpegthumbnailer -h
Usage: ffmpegthumbnailer [options]

Options:
  -i<s>   : input file
  -o<s>   : output file
  -s<n>   : thumbnail size (use 0 for original size) (default: 128)
  -t<n|s> : time to seek to (percentage or absolute time hh:mm:ss) (default: 10%)
  -q<n>   : image quality (0 = bad, 10 = best) (default: 8)
  -c      : override image format (jpeg or png) (default: determined by filename)
  -a      : ignore aspect ratio and generate square thumbnail
  -f      : create a movie strip overlay
  -m      : prefer embedded image metadata over video content
  -w      : workaround issues in old versions of ffmpeg
  -v      : print version number
  -h      : display this help


1) Install Keneric plugin
Earlier: - viewtopic.php?f=224&t=156241#p408277

Code: Select all

$ cd keneric-0.4.1

$ mkdir builddir

$ cd builddir && cmake .. -DCMAKE_INSTALL_PREFIX=$(kf5-config --prefix) -DCMAKE_BUILD_TYPE=Release -DKDE_INSTALL_USE_QT_SYS_PATHS=ON
-- The C compiler identification is GNU 7.3.0
-- The CXX compiler identification is GNU 7.3.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Looking for __GLIBC__
-- Looking for __GLIBC__ - found
-- Performing Test _OFFT_IS_64BIT
-- Performing Test _OFFT_IS_64BIT - Success
-- Performing Test HAVE_DATE_TIME
-- Performing Test HAVE_DATE_TIME - Success
-- Found KF5KIO: /usr/lib/x86_64-linux-gnu/cmake/KF5KIO/KF5KIOConfig.cmake (found version "5.52.0")
-- Found KF5: success (found version "5.52.0") found components:  KIO
-- Configuring done
-- Generating done
-- Build files have been written to: /home/rog131/Downloads/keneric-0.4.1/builddir

$ make
Scanning dependencies of target keneric_autogen
[ 25%] Automatic MOC for target keneric
[ 25%] Built target keneric_autogen
Scanning dependencies of target keneric
[ 50%] Building CXX object CMakeFiles/keneric.dir/keneric.cpp.o
[ 75%] Building CXX object CMakeFiles/keneric.dir/keneric_autogen/mocs_compilation.cpp.o
[100%] Linking CXX shared module keneric.so
[100%] Built target keneric

$ sudo make install
[sudo] password for rog131:
[ 25%] Automatic MOC for target keneric
[ 25%] Built target keneric_autogen
[100%] Built target keneric
Install the project...
-- Install configuration: "Release"
-- Installing: /usr/lib/x86_64-linux-gnu/qt5/plugins/keneric.so


2) Make the desktop file

$HOME/.local/share/kservices5/kenericvideo.desktop

Code: Select all

[Desktop Entry]
Type=Service
Name=Video Files (Keneric)
Name[x-test]=xxVideo Files (Keneric)filexx

X-KDE-ServiceTypes=ThumbCreator
MimeType=video/*;application/x-flash-video;application/vnd.ms-asf;application/vnd.rn-realmedia;

X-KDE-Library=keneric
CacheThumbnail=true
ThumbnailerVersion=2
IgnoreMaximumSize=true


3) Add video thumbnailer options to the stripPicture script file

Code: Select all

#!/bin/sh
# Usage: stripPicture fullname mime exportPicture thumbSize

fullname="$1"
mime="$2"
exportPicture="$3"
thumbSize="$4"

# thumbnail options by mime type
case "$mime" in

      something/x-something)
      yourcommand "$fullname" "$exportPicture"
      exit
      ;;

      *)
#     case trap
      exit
     
esac


Random video thumbnail

Code: Select all

    video/*|application/x-flash-video|application/vnd.ms-asf|application/vnd.rn-realmedia)
        ffmpegthumbnailer -s $thumbSize -t $((RANDOM %90 + 5)) -q 1 -i "$fullname" -o "$exportPicture"
    exit
    ;;


Video duration and the tags:

Code: Select all

    video/*|application/x-flash-video|application/vnd.ms-asf|application/vnd.rn-realmedia)
        pointSize=$((thumbSize/16))
        annotateNorthEast=`getfattr --only-values --absolute-names -n user.xdg.tags "$fullname"`
        annotateSouthWest=`mediainfo --Inform="General;%Duration/String2%" "$fullname"`
        ffmpegthumbnailer -s $thumbSize -t $((RANDOM %90 + 5)) -q 1 -i "$fullname" -o "$exportPicture"
        convert -background 'rgba(115, 252, 80, 0.70)' -fill black -pointsize $pointSize label:"$annotateNorthEast" miff:- | composite -gravity northeast - "$exportPicture" "$exportPicture"
        convert -background 'rgba(0, 0, 0, 0.60)' -fill white -pointsize $pointSize label:"$annotateSouthWest" miff:- | composite -gravity southwest - "$exportPicture" "$exportPicture"
    exit
    ;;


Use embedded posters if available:

Code: Select all

    video/*|application/x-flash-video|application/vnd.ms-asf|application/vnd.rn-realmedia)
        ffmpeg -loglevel panic -y -i "$fullname" -map 0:v -map -0:V -c copy "$exportPicture".jpg
        if [ -f "$exportPicture".jpg ]; then
            mv "$exportPicture".jpg "$exportPicture"
        else
            pointSize=$((thumbSize/16))
            annotateNorthEast=`getfattr --only-values --absolute-names -n user.xdg.tags "$fullname"`
            annotateSouthWest=`mediainfo --Inform="General;%Duration/String2%" "$fullname"`
            ffmpegthumbnailer -s $thumbSize -t $((RANDOM %90 + 5)) -q 1 -i "$fullname" -o "$exportPicture"
            convert -background 'rgba(115, 252, 80, 0.70)' -fill black -pointsize $pointSize label:"$annotateNorthEast" miff:- | composite -gravity northeast - "$exportPicture" "$exportPicture"
            convert -background 'rgba(0, 0, 0, 0.60)' -fill white -pointsize $pointSize label:"$annotateSouthWest" miff:- | composite -gravity southwest - "$exportPicture" "$exportPicture"
        fi
    exit
    ;;


Full image: https://imgur.com/6pOrQVq

Youtube clip: https://youtu.be/L694nghnPo8


Notes

Earlier: viewtopic.php?f=224&t=156241#p409075

Now and then the Dolphin Information panel is showing wrong thumbnail (ffmpegthumbs). My guess is that this is a variant of the https://bugs.kde.org/show_bug.cgi?id=402530 i.e the Dolphin is not following the user settings. A workaround is to remove the ffmpegthumbs.desktop file or remove the ffmpegthumbs package.