https://bugs.kde.org/show_bug.cgi?id=371926
Bug ID: 371926
Summary: No monitor image when idling if Movit in use
Product: kdenlive
Version: git-master
Platform: Debian unstable
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: Video Display & Export
Assignee: j...@kdenlive.org
Reporter: directact...@hushmail.com
Target Milestone: ---
Using Kdenlive build from GIT master (post Oct 10 2016),with Movit enabled,
when Kdenlive opens a project and anytime the timeline indicator (playhead) is
set to a new location, the monitor shows no image, just the default grey
background. Same in clip and project monitor.
If Movit is not enabled, the monitor shows the image at the point the playhead
is positioned when at idle, and on opening a project shows a clip. Enable
Movit, get the grey monitor at idle. This problem does not exist in Kdenlive
16.08.2, only git master with the refactoring work.
To duplicate, build kdenlive from master and install it, then start it and
enable Movit. Put a video clip on the timeline and let it thumbnail. No image
Move the playhead and the monitor returns to blank grey. Put the clip on the
timeline and set the monitor to "project." No image appears in monitor. Play
the clip, this works normally. Move the playhead, the image blanks and the
monitor returns to grey. Again-this is only with movit enabled and does not
occur without it.
An Oct 10 Kdenlive build with c71731d4919def0ebbffe31cf79d965eaa8cf320 (attempt
to fix QOffscreenSurface thread crash)
as the last commit did not have this issue. My next build had
9fcbba8bf03c918efce49ae3160ce23f8a085a18 (Improve some effect names, capitalize
first letter, patch by alcinos)
as the last commit and has the monitor grey screen idle problem, as do all
since then.
Reverting 68e89f48be0ec2fe1767a6ea050fa87fb9b441c5 (Fix CPU usage when idle)
did not fix this, and cherrypicking it and applying it to 16.08.2 did not cause
this or any other problems. It was a suspect but can't do this by itself it
seems.
If I applied both that one and commit 55f3848ceba2d80a43694bb2ca7522e315d2fb01
(Add proper UI for lut3d effect (avfilter), patch by alcinos) to 16.08 I did
get the grey monitor. Seemed OK with either one of these but not both but that
was not heavily tested. Changing effect names (the last commit on the first bad
build) does not seem a likely cause.
This problems occurs with MLT from git master as of Oct 31,2016 and with older
version. Using current Movit from GIT master downloaded August 23, no new
commits to Movit since then. All of this on Debian Unstable current as of Oct
21.
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