Add two clips to the list, one with “letterbox” issues;
Pull the ‘normal’ clip into the timeline;
Edit as you please, then export;
Remove the ‘normal’ clip from the track, add the ‘problem’ clip to it and make sure the clip is selected;
Use the “Size, Position, Rotation” filter to adjust the clip to the actual video size and remove the black around the actual image, then export the video;
Delete the clip from the track and re-add the ‘normal’ clip again.
→ the ‘normal’ clip and any other clip now show the same issue as the ‘problem’ clip (“letterbox”), despite the filter being no longer active.
Additional information: The same is true if the filter has been applied to the whole track and then removed. It’s even true if I delete the track and create a new one, regardless of whether this is being done by dragging a clip into the timeline or by creating an empty track first.
Workaround: Closing Shotcut and restarting it, but that’s a bit frustrating.
I do not reproduce the issue. I am guessing that you have mistakenly attached a filter to a source clip, track, or Timeline > Output but also you kind of lost me at end:
the ‘normal’ clip and any other clip now show the same issue as the ‘problem’ clip (“letterbox”), despite the filter being no longer active.
What “issue?” At this point my ‘normal’ clip now in the timeline looks unfiltered–original size:
I also exported after step 6 and reviewed the exports. Everything looks fine and as expected: the “letterbox” clip has black bars removed, and the other 2 do not have a different size or black bars added.
Or, maybe the problem is that your “normal” clip’s aspect ratio does not match your Video Mode. If you are using Automatic Video Mode, that does not reset by simply removing things from the timeline. That only resets when you do File > New or File > Close or restart. In case you do not want to do those because you are using the Playlist as a clip bin, you can use an unintentional workaround: open the new clip in the Source player by double-clicking it and (re)choose Settings > Video Mode > Automatic. Automatic does not mean fluid, and you are not resetting your project by removing clips or tracks. Playlist is also part of the project, but even removing everything from there too does not reset a project. A project is a project until it is closed or a new one is started or opened. If this is the problem, you might find it easiest to not use the Playlist. Simply use your file manager and reset with New or Close between clips.
