On Wed, Nov 19, 2014 at 4:27 AM, Zenny <garbytr...@gmail.com> wrote:
> On 11/18/14, Dan Dennedy <d...@dennedy.org> wrote:
> > On Tue, Nov 18, 2014 at 11:13 AM, Zenny <garbytr...@gmail.com> wrote:
> >
> >> Hi again:
> >>
> >> Trying to help some friends to create composite video. But when I try
> >> to render using a single processor, the rendering is fine, but when
> >> tried with multiple processors, it produces jitters as seen on the
> >> attachments (20s of videos respectively for comparison).
> >>
> >> Some filter (Effect in Kdenlive) is having a problem with
> >> multi-threading,
>
>
> I came across a forum post which stated otherwise:
>
> https://forum.kde.org/viewtopic.php?f=265&t=115590&sid=5254b0bb04f00274298cb7dfb3755286&start=15#p324465
>
>
On the contrary, that forum confirms my allegation! There _is_ an effect
that is causing the problem. It is not difficult to isolate which one it
is, but only _after_ you have reproduced the problem. Alas, I have not
reproduced the problem because no one has told me how. I see that user
jkolodziej's video also is doing some chroma key effect. So, you guys can
either help out, or wait until I stumble upon it myself. Once the offending
effect is isolated, it is quick and easy to make a fix that prevents
multi-threaded access to that effect or its core routine.
--
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