Comment 21 for bug 403154

I'll be watching the MLT mailing list for an update on this. I've seen a
few emails bouncing around about this topic.

On Wed, Sep 2, 2009 at 3:56 PM, TJ <email address hidden> wrote:

> Using MLT:
>
> commit 35d237661cb43067ed38fbc1605f4144be0ec431
> Merge: 75ed0b3... 763ddda...
> Author: gmarco <email address hidden>
> Date: Tue Sep 1 20:40:33 2009 +0200
>
> The issue still occurs.
>
> Dan Dennedy (MLT) is aware of some A/V sync issues with AVCHD that step
> from the problems with ffmpeg that I mentioned.
>
> I'll keep an eye on the ffmpeg patches since Dan can't add improved seek
> to MLT until they're working correctly.
>
> --
> 100% CPU core usage when previewing time-line
> https://bugs.launchpad.net/bugs/403154
> You received this bug notification because you are the registrant for
> OpenShot Video Editor.
>
> Status in OpenShot Video Editor: In Progress
>
> Bug description:
> Using complex keyframes can cause the viewing port to freeze so it will not
> play anymore.
>
> I have tested this with Jonathan's original Vimeo demo clip with the dog
> and the leaves.
>
> I have attached project .osp file for examination.
>
> I put the clip on the timeline, and set the clip properties so Video had
> fill enabled.
>
> I then set layout->end->x to 100% so it wiped across the screen
>
> I then duplicated this clip and placed the copy below it, and synchronised.
>
> On the duplicate I set layout->start->x to -100% and layout->end->x to 0%
> so it wiped across following the upper clip.
>
> At this point in the editing, the timeline would usually play without the
> viewing window freezing, but sometimes the viewing window would freeze and I
> would have to close OpenShot and re-start it.
>
> The next thing I did was to switch the sound to "off" on the lower
> duplicate clip.
>
> With these settings the timeline could not run fully without the viewing
> port freezing.
>
> Also it had another dramatic effect!
>
> If I re-loaded this saved project at this state, it would sometimes
> completely hang OpenShot as it tried to load!
>
> Sometimes it would load but without the clips being on the timeline, so
> only the parent clip showing in the Project Files tab.
>
> Sometimes it would load fully and I could play part of the timeline before
> the viewer froze.
>
> Helen McCall
>