Canceling Video conversion still replaces every clip of that video, deeming conversion successful.
Windows 11.
first encountered in 25.05.11, also observed in 25.07.26
- Add a video to your timeline that does not natively support the Time warp filters (with B-Frames) or similar, idealy one at least a few minutes long. Maybe add a few random cuts to your video.
- Apply a Time warp filter to your video (speed forward & backward), or trigger the conversion in a different way. Shotcut prompts you to select a video quality to convert to, from my testing the selected quality doesnt change the outcome. Choose a name for the converted video that you can distinguish from the original.
- Cancel the conversion and check the name of the video on your timeline, also check if the video only partially remains. Also check if the conversion is listed as successful (green square with checkmark instead of yellow square with “!”) despite the cancellation.
When I first encountered the Issue, I assumed my timeline was only rendering wrong, so I saved and reopened the project, trying to work around the issue by deleting the converted file, reopening the project and then, when prompted about the missing file, replacing it with the original, unconverted file, that however did not fix my project. I still have a copy of the non-repaired project (before I tried that replacement), but not before I started and then cancelled the conversion, so I am still searching for a way to recover my project.
When sending this Bugreport, I`m currently in the process of redoing the conversion in a different project, hoping that the project that broke accepts that file. That will take a few hours though (which is why I chose to cancel the conversion initially, instead opting to rerender the clip I need multiple times with 50x until I would get the speed I need), so I will update this later on if that was successful.
Edit: I decided to test this on a shorter clip so I dont have to wait multiple hours, so I did what I described above in steps 1-3, then saved the project, closed it and then repeated steps 1&2 in a different project, making sure the converted video replaces the one I created and canceled previously, then waited until conversion finished and reopened the first project. This however did not fix the project, the image below shows the final result.
Im still converting the video of the original file in case there is some workaround because I would prefer not to re-edit all of it.