https://bugs.kde.org/show_bug.cgi?id=440842
Bug ID: 440842
Summary: kdenlive installs incompatible versions (v.7) of melt
and libmlt
Product: neon
Version: unspecified
Platform: Neon Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Packages User Edition
Assignee: neon-b...@kde.org
Reporter: dnelu...@gmail.com
CC: j...@jriddell.org, neon-b...@kde.org, sit...@kde.org
Target Milestone: ---
SUMMARY
Installation of kdenlive in current KDE neon User Edition 5.22 causes
installation of both libmlt6 and libmlt-7-7. However, libmlt-data v.7 are
installed. Kdenlive doesn't work with libmlt7 profiles.
STEPS TO REPRODUCE
1. apt update && apt install kdenlive
2. Run Kdenlive
3. The dialog box to define path to MLT profiles appears. The only available
profiles are in /usr/share/mlt-7/profiles. Enter this path.
4. In a new Kdenlive project try to add any video clip to the Project Bin.
OBSERVED RESULT
A error "Cannot open ... file" appears. The clip is not added to the bin.
Kdenlive cannot work.
EXPECTED RESULT
No need to set up MLT profiles folder on the first Kdenlive start.
Video clips are successfully added to the bin.
SOFTWARE/OS VERSIONS
Operating System: KDE neon 5.22
KDE Plasma Version: 5.22.4
KDE Frameworks Version: 5.84.0
Qt Version: 5.15.3
ADDITIONAL INFORMATION
The problem is caused by wrong dependencies and common usage of libmlt-data
package by both libmlt versions.
Package: kdenlive
Version: 4:21.04.3-0xneon+20.04+focal+release+build32
Depends: ... melt, ..., libmlt++3 (>= 6.24.0), libmlt6 (>= 6.24.0), ...
// kdenlive should depend on specific version of melt
Package: melt
Version: 7.0.1-0xneon+20.04+focal+release+build11
Depends: libmlt-data (>= 7.0.1-0xneon+20.04+focal+release+build11), ...,
libmlt-7-7 (>= 7.0.1), ...
// this melt version is installed, it's incompatible with kdenlive
Package: melt
Version: 6.24.0-0xneon+20.04+focal+build9
Depends: libmlt-data (>= 6.24.0-0xneon+20.04+focal+build9), ..., libmlt6 (>=
6.24.0), ...
// even if you hold melt version it tries to install the latest libmlt-data
Package: libmlt-data
Version: 7.0.1-0xneon+20.04+focal+release+build11
// it contains /usr/share/mlt-7/ which is incompatible with kdenlive
Package: libmlt-data
Version: 6.24.0-0xneon+20.04+focal+build9
// it contains /usr/share/mlt/ - the correct data
If I hold both melt and libmlt-data versions to 6.24, kdenlive works.
libmlt-7-7 should have it's own libmlt-data.
kdenlive should not install melt v.7.
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