[Kdenlive-devel] Project news...

reinhard amersberger Amersberger at t-online.de
Mon Apr 17 22:29:30 UTC 2006

On Monday 17 April 2006 01:22 am, jb wrote:
> Hi!
> Could you please test again the mpeg export ? 

kdenlive still crashing.
I just added one video file to the timeline, opened the export dialog, entered 
a filename with .mpeg extension, choosed mpeg as the export format and hit 
the export button and boooommmm...

running with gdb gives this error messages:

kdenlive: +++++++++  START EXPORT: mpeg
[Thread 1120410544 (LWP 29481) exited]
[Thread 1118309296 (LWP 29482) exited]
[New Thread 1118309296 (LWP 29497)]
Unable to encode audio - disabling audio output.

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1118309296 (LWP 29497)]
0x41e2d3b2 in mpeg1_encode_mb () from /usr/local/lib/libavcodec.so.51
(gdb) fg
KCrash: Application 'kdenlive' crashing...
kdenlive: Fatal IO error: client killed

Program exited with code 01.

btw - selecting multiple files in the "add clips" dialog works no longer ;(

> I recently committed some 
> fixes. I also just fixed the delete transition crash.
> > - when re-open a project (two clips with a transition) the workspace
> > monitor remains white, no audio during playback and playback stops at the
> > beginning of the transition.
> Cannot reproduce this... If it still happens with last cvs, can you give me
> precise infos on how to reproduce this behavior starting with a blank
> project ?

It's also when just adding one video file to the timeline, saving this new 
project and loading the saved project again or another project. The result is 
a white workspace monitor ....
btw - i did a ....... aahhh, wait ... will try to re-install mlt .... no,  
don't fix the problem ...

> > btw - would be very nice, but not very important, if we could assign
> > shortcuts for "go to begin/end of clip/timeline"
> > to bring back the whole functionallity I have to load and add an audio
> > clip to the timeline.
> Will have a look.


> > aahh, right now I found a rule - the transparent background don't work
> > when the track below is empty.
> > is this on purpose?
> Yes, it is a general problem with mlt. Currently all transitions only work
> with the track just below. If you try to make a transition and there is no
> clip on the track below you get weird results... Not sure what is the best
> way to solve this. I think the best would be to fix the issue in mlt...

ok, I hope you will find a solution.

> will anyways not be fixed for the 0.3 release.
> > - transition in combination with transparent background don't work - this
> > region/zone remains black.
> Right... but it's more an mlt issue. Not sure I can fix it.
> > hhmmm ... about "basic features" .... I just could imagine the need to
> > resize/position/place image clips.
> Yes, image behaviour is currently quite unpredictable. I will try to come
> with a "basic" solution.


> > having the render dialog in a separate thread would be a nice feature as
> > well.
> Maybe later.. :)

ok, but I'm not sure if having this in a separate thread was a good 
description from me ... could it be possible to have the render dialog in a 
non-modal window as well as the transition dialog, to be able to keep on 
working on another project during export?

and ... finally apropos "basic features" and "create fade in/out by just 
dragging the upper corners" ?
Ok, this works already by adding two transition, on at the beginning and one 
at the end, but might be faster to apply by just dragging the upper  corners, 
since sometimes I have to adjust the direction of the transition ...

btw - have found a bug here:
add long a clip to the timeline, add a short one above, create a transition at 
the beginning of the upper clip, move the timeline slider to the end of the 
upper clip and create a transition, change the direction of the second 
transition and delete the second transition. At this point kdenlive seems to 
not take notice of this and keep the transition dialog active with the 
"invert direction" option selected. Now add  the second transition again and 
kdenlive is crashing when trying change the direction again.


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