Re: [Kdenlive-devel] Daily bugs

[jb <jb...@ad...>]

Zsolt Sandor wrote:
> The first question is: what is what the user expects? In other
> software, a virtual clip is associated with a clip. A virtual clip is
> simply a part of a clip, and has no connection with the timeline.
> What the user want is to be able to cut out parts of his long video
> clip, and put the small parts with effects to the timeline.
> Why virtual? Because there is no need for recompression and does not
> need to store the videos on the hard disk.

Well, I was not aware of virtual clips in other editing software.
Kdenlive's concept is quite different and more powerful in my opinion.

In Kdenlive, a virtual clip is the dynamic duplicate of a section of
your timeline. It means that you can apply transitions, filters and
everything, they will reflect in the virtual clip. In my mind, one of
the use of this is when you make a movie with chapters and want the same
background for your titles, you can create a virtual clip for this, and
then put the virtual clip as background of your titles. Then, changing
the virtual zone will update all your chapters background.

Having a virtual clip that is simply a copy of a clip with effects in it
doesn't seem really usefull to me, you can just do copy & paste in the
timeline, I don't see the use of having it in the project tree...

Let me know what you think of this...

> Virtual clip bug #1
> 
> Create new color clip. Add to the timeline. Select a part of it.
> Create a new virtual clip from it.
> Remove the original color clip from the timeline. A red line can be
> seen on the top of the timeline.
> 
> Add the virtual clip to the timeline. Select clip monitor. You can
> play the virtual clip. Select
> Timeline monitor. You can not see anything.
> 
> Remove the virtual clip. Add the original color clip. Remove the
> original color clip.
> Add the virtual clip. You can see: "Invalid".

That's kind of logical (of course I am speaking as the developer now).
The Virtual clip is a "mirror" of the timeline. If your timeline is
empty, the virtual clip doesn't have anything to mirror and thus will
show this "invalid" message. But of course that may not seem so logical
to users... maybe I can manage to just display a black screen in that
case...


> Virtual clip bug #2
> 
> Create new virtual clip. File->New project, add project name, press
> ok,  you can see some part of virtual clip of the timeline.

Fixed.

> Virtual clip bug #3
> 
> Create 2 color clips with different colors. Add the first one to the
> timeline, create a virtual clip
> from it's part. Add colorclip 2 to the timeline. where the first was
> cut.  (picture 2)
> drag the virtual clip to the timeline. It seems be ... interesting...

Didn't really manage to understand or reproduce your problem... maybe
easier if you send a picture ?

regards
jb