For me, in 16.04 onwards the speed effect is missing. It is present in 15.12.3-1. Reproducible: Always Steps to Reproduce: 1. install kdenlive 16.04 2. look for speed effect (Motion->Speed) 3. Search for "Speed" also doesn't work Actual Results: Speed affect should be in the list of effects Expected Results: Speed effect should be in the list. I have so many projects which use this feature, it's really a breaking bug for me. I have to downgrade.
Did you check that you are on latest MLT version? The implementation of the speed effect has been changed and needs a very recent MLT version.
thankyou very very much, this was indeed the problem. Installed mlt from source fixed it. A number of other little issues with the new speed will have to see whether to report.