It was possible in LR4 to create Timelapse videos with a picture length from 0,1s on. In LR5 this value is now limited to a lower border of 1 second. Without my existing presets from LR4 it wouzld be impossible to crate timelapse videos. Have I made a mistake or was the change in LR the mistake?
You can save a preset with a valid number for seconds (something between 1 and 20), right-click on the preset and choose Show in Explorer, then edit the preset file in a text editor and change the Speed to something less than 1 second. You may need to restart LR for it to read in that smaller number.
There may be a problem playing slideshows in LR at a fast pace and they’re trying to make the exported videos match playing within LR. I’ve never done slideshows so am not sure. A time lapse video with 10-fps isn’t a slide-show so Adobe might have just designed things to only produce slide-shows, now. Or maybe there is a performance problem or resource problem with creating high frame-rate slide-shows. Adobe is always reworking things to make them faster or otherwise better and maybe a high-frame rate wasn’t compatible with something they did. Using a hacked preset should answer this question at least on your computer platform.
A more cynical view would be that Adobe expects people to buy Premier (or maybe Photoshop CC) or a third-party product to create time-lapse videos.
Using a hacked preset should answer this question at least on your computer platform.
It seems that it is not possible anymore, even with "hacked" presets. From the author of LRTimelapse: http://forum.lrtimelapse.com/Thread-lrtimelapse-and-lightroom-5