"Problem adding effect to clip"

[amindfv at mailbox.org]

(I believe I had to enable Movit - it was off by default - in Settings > Kdenlive Settings > Playback > "Use GPU (Movit)")

On Mon, Jul 05, 2021 at 04:14:09PM -0600, amindfv at mailbox.org wrote:
> That's very unfortunate to hear! I use Movit effects (filters as opposed to transitions) very extensively and wouldn't really be able to use Kdenlive effectively without them.
> 
> Do newer versions of Kdenlive use something else for GPU-based processing? And can I at least expect the Movie filters I already use to continue to work? (It sounds from your message like maybe not?!)
> 
> Thanks,
> Tom
> 
> On Mon, Jul 05, 2021 at 11:03:40PM +0200, Camille wrote:
> > Hi Tom,
> > 
> > Unfortunately, there  are deep rooted  problems with Movit effects, so I'm
> > afraid you'd get similar issues even with newer versions.
> > 
> > In general, you can easily try recent versions by downloading Appimage
> > versions, but it seems that Movit is not available in those.
> > 
> > Cheers,
> > 
> > Camille
> > 
> > PS : you might still want to use newer versions, as many cool features have
> > been added.
> > 
> > Le 05/07/2021 à 20:25, amindfv at mailbox.org a écrit :
> > > Failing a workaround, can anyone confirm this is fixed in newer Kdenlive (20.12+)?
> > > 
> > > Also, here's the console output each time I try to add a Movit/GLSL transition:
> > > 
> > >      Falling back to using screens root_visual.
> > >      QTimeLine::start: already running
> > >      org.kde.knotifications: Audio notification requested, but sound file from notifyrc file was not found, aborting audio notification
> > > 
> > > Tom
> > > 
> > > On Sun, Jul 04, 2021 at 09:14:41PM -0600, amindfv at mailbox.org wrote:
> > > > I'm using an older version of Kdenlive (18.12.3 - the version on Debian Stable). When I try to add certain transitions (the Movit transitions), it gives me an error: "Problem adding effect to clip." Is there any way to work around this?
> > > > 
> > > > Hopefully this is fixed in later versions, but even if it is, I'd love to hear of a workaround for my current setup.
> > > > 
> > > > Other symptoms:
> > > > 
> > > >    - Movit effects (as opposed to transitions) work just fine
> > > >    - I've just gone through and tested, and all Movit transitions have this problem, and no non-Movit transition has this problem
> > > >    - Kdenlive under the hood appears to successfully use the "Overlay (GLSL)" transition to mix video tracks when I look in the MLT XML, but I'm unable to use that transition myself in the UI
> > > > 
> > > > Thanks,
> > > > Tom
> > > >