Harry van der Wolf wrote: > Hi, > > I have some questions and suggestions about the "Create Slideshow clip". > > 1. Pop-up texts: > a. The image duration says : Frames per image. It might be better to > change this to Durations (seconds). Based on project settings (NTSC, > PAL, or 15fps for web?) this will then automatically be translated in > needed frames for the specified duration. > b. The same is valid for Transition duration. Agreed, in progress
> > 2. Quality of transitions: > When I select a Crossfade transition without LUMA file, the rendered > slideshow in the end looks good. However, the slideshow effect is > sometimes not visible at all. It looks as if it is skipped. > Also, When I select a nice LUMA transition (clock, the new swirl, or > another), > - the transition effect is sometimes not visible at all > - sometimes it looks like a "stutter" going from one slide to another, > but the effect itself is not visible > - and sometimes the effect is not finished, showing artifacts from the > previous slide in the current slide (after the transition is finished, > that is). > Does it also happen when you render the movie or only on preview ? > My questions here are: > a. how is the slideshow implemented? Is it a (external) call tot > DVD-Slideshow (or dir2slideshow) from the DVD-slideshow tools, and if > so: what version is needed? My Kubuntu comes shipped with the 0.72 > package. Is anyone using a newer version (the new 0.80) and does > he/she do not have this caveats in quality (assuming it is based on > dvd-slideshow)? > b. If it is not dvd-slideshow, is there some quality setting for > slideshows within Kdenlive. Some video packages also have a separate > slideshow functionality. These slideshows are sometimes generated with > a lower quality as the changes from frame to frame are almost zero, > unless you start to use fancy transitions in which case you need some > intelligence to create slideshows with low bandwidth on the slide > itself and high bandwidth on the transitions (2-pass encoders, same > for video). > c. If b is true, can you put in some high/low quality setting in case > transitions are used. The slideshow uses an MLT filter that does the transition. Maybe there are some bugs in it, I will try to make some tests. > > 3. Random transitions. > Some time ago I asked for the possibility of random transitions in a > slideshow. I still have that wish. I'm considering writing a Kommander > script to do this using the DVD-slideshow tools, but it would be very > nice if Kdenlive could do this (which also means that I don't have to > do it: yes, I admit I'm lazy). On the other hand: if (not when) I > finish this, I will share it with everyone who is interested. > Yes, I remember the random transition request, but currently the MLT effect used for slideshow does not allow this. So don't expect this feature too soon... jb
