Comment 26 for bug 403154

I thought I would add this link to Daniel Chen's blog on the Audio Stack
problems in Jaunty. This might be part of the problem.

http://drowninginbugs.blogspot.com/2009/02/pulseaudio.html

Helen

On Sat, 2009-09-12 at 22:10 +0000, Helen McCall wrote:
> Hello Jonathan,
>
> Sorry I didn't make it clear. The codec was mp4 in an mp4 format. The
> others I tried were h.264 in an mp4 file format, and h.264 in an MTS
> format. All three of these gave the same problem. (and still do)
>
> I have also experienced the same problem with the latest version of
> kdenlive from TJ's ppa. I have only tested kdenlive with mp4 codec in
> mp4 format, and h.264 codec in MTS format. I used the same clips in both
> OpenShot and kdenlive.
>
> The earlier version of kdenlive which comes with Ubuntu wouldn't work at
> all with my MTS files.
>
> I think the problem must be with mlt or ffmpeg. TJ's debugger also
> pointed to that.
>
> Best wishes, Helen
>
>
>
> On Sat, 2009-09-12 at 21:31 +0000, Jonathan Thomas wrote:
> > Helen, what is your mp4 file encoded as? mpeg4? I only ask because mp4 can
> > also contain h.264... which is AVCHD.
> >
> > Thanks,
> > -Jonathan
> >
> > On Fri, Sep 11, 2009 at 10:17 PM, Helen McCall
> > <email address hidden>wrote:
> >
> > > No - it has happened with MP4 codec as well.
> > >
> > > Helen
> > >
> > >
> > > On Sat, 2009-09-12 at 02:48 +0000, Jonathan Thomas wrote:
> > > > Quick question. Does this issue only happen when using AVCHD video
> > > > clips?
> > > >
> > >
> > > --
> > > 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
> > >
> >
>
> --
> 100% CPU core usage when previewing time-line
> https://bugs.launchpad.net/bugs/403154
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> 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
>