Created attachment 178053 [details] Clips name gets suffix and 'Sequence 1/2' causes no respond There is no way to merge seperate clips that are one after one, although this can be achieved by 'Create sequence from selection'. But in my project, after achiving merging feature with 'Create sequence from selection', two sequences have created and then Kdenlive is not responding for a long while at next time I've opened this project. After sometimes, Kdenlive starts to respond again. But if clicked on 'Sequence 1/2' on top left of the timeline or click on any of clip in the project bin, Kdenlive again stops responding for a while. The project file also takes long time to be opened. Moreover, all my clips name gets a suffix like [1|2]. I've attached a screenshot of this condition.
Oh! Finally I've found the issue which caused this problem. If, Audio Backend is set to 'SDL' and there is no Playback device is plugged into PC, then this problem happens. I've changed Audion Backend 'SDL' to 'Rtaudio', the problem has fixed!