Shotcut 19.12.31 linux: no "Text: simple" filter?

Help/How To
1

I am using shotcut 19.12.31 on Gentoo linux and I am experiencing the problem that the “Text: Simple” filter is not available.

I read this posting:

https://forum.shotcut.org/t/text-filter-missing-on-gentoo-linux/9478

It appears that the “dynamictext filter” is not available in mlt. So, I tried:

user@computer ~ $ qmelt -query filters

A long list of filters is produced, but not “dynamictext”. For MLT, I used the following settings:

root ~ # emerge -pv mlt

These are the packages that would be merged, in order:

Calculating dependencies… done!
[ebuild R ] media-libs/mlt-6.20.0::gentoo USE=“ffmpeg frei0r gtk jack opengl qt5 sdl xml -compressed-lumas -debug -fftw -kdenlive -libsamplerate -lua -melt (-opencv) -python -rtaudio -ruby (-vdpau) -vidstab -xine” CPU_FLAGS_X86=“mmx sse sse2” PYTHON_SINGLE_TARGET=“python3_6 -python3_7 (-python3_8)” 0 KiB

Total: 1 package (1 reinstall), Size of downloads: 0 KiB

I guess that I need to enable some USE flag, but which of these flags has relation to the “dynamictext filter”:

-compressed-lumas
-debug
-fftw
-kdenlive
-libsamplerate
-lua
-melt
(-opencv)
-python
-rtaudio
-ruby
(-vdpau)
-vidstab
-xine

Thanks!

2

Looks like you are using a custom build of Shotcut, which is not fully supported here. This filter depends on either Qt or gdk-pixbuf.

I do not recognize these flags as part of MLT’s configure script. If they are for gentoo emerge, you might have better luck asking on a gentoo forum or list. You might get lucky that someone here is using gentoo, but it is rare coming from someone who has read nearly every message here.

3

From emerge (with some editing for readability)

Configuring source in /var/tmp/portage/media-libs/mlt-6.20.0/work/mlt-6.20.0 …
./configure
–prefix=/usr
–build=x86_64-pc-linux-gnu
–host=x86_64-pc-linux-gnu
–mandir=/usr/share/man
–infodir=/usr/share/info
–datadir=/usr/share
–sysconfdir=/etc
–localstatedir=/var/lib
–libdir=/usr/lib64
–enable-gpl
–enable-gpl3
–enable-motion-est
–target-arch=amd64
–disable-kde
–disable-sdl
–disable-swfdec
–disable-debug
–enable-sse
–enable-sse2
–enable-avformat
–disable-plus
–enable-frei0r
–enable-gtk2
–enable-jackrack
–disable-kdenlive
–disable-resample
–enable-melt
–disable-opencv
–enable-opengl
–enable-qt
–disable-rtaudio
–enable-sdl2
–disable-vid.stab
–disable-xine
–enable-xml
–disable-sox
–avformat-swscale
–qt-includedir=/usr/include/qt5
–qt-libdir=/usr/lib64
–enable-mmx
–swig-languages=none
Found gcc version 9.2.0
Configuring framework:
Configuring modules:
Configuring modules/avformat:
Configuring modules/core:
Configuring modules/decklink:
Configuring modules/feeds:
Configuring modules/frei0r:
Package frei0r was not found in the pkg-config search path.
Perhaps you should add the directory containing `frei0r.pc’
to the PKG_CONFIG_PATH environment variable
No package ‘frei0r’ found
Configuring modules/gtk2:

  • Libexif found, enabling auto rotate
    Configuring modules/jackrack:
    Configuring modules/linsys:
    Configuring modules/lumas:
  • not explicitly enabled: disabling
    Configuring modules/motion_est:
    Configuring modules/ndi:
  • NDI SDK not found: disabling
    Configuring modules/normalize:
    Configuring modules/oldfilm:
    Configuring modules/opengl:
    Configuring modules/plusgpl:
    Configuring modules/qt:
  • Libexif found, enabling auto rotate
  • Qt version 5.x detected
  • Include directory: /usr/include/qt5
  • fftw found, enabling lightshow
    Configuring modules/rubberband:
  • rubberband not found: disabling
    Configuring modules/sdl2:
  • using SDL version 2.0.10
    Configuring modules/videostab:
    Configuring modules/vmfx:
    Configuring modules/vorbis:
    Configuring modules/xml:
    Configuring mlt++:
    Configuring swig:
    GPLv3 license used

Source configured.
Compiling source in /var/tmp/portage/media-libs/mlt-6.20.0/work/mlt-6.20.0 …

In the above list, is there any indication where / why the “dynamictext filter” might be impacted?

Thanks

4

The plus module is disabled by configure. It lives in the plus module.

5

Aha! I checked the EBUILD, and on Gentoo, “plus” is enabled if the “fftw” USE-flag is set!

For the impatient:

root ~ # echo “>=media-libs/mlt-6.20.0 melt fftw” >> /etc/portage/package.use
root ~ # emerge -v mlt
root ~ # emerge -v shotcut

and: the “Text: Simple” filter becomes available in shotcut 19.12.31 on Gentoo linux! It’s a kind of magic!

Thanks!

6

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