Reduce the overall timeline of the video

Good Morning,

I created a new video of about 7 minutes, however the full timeline is 4 hours (I don’t know how I did it).
How do I reduce the overall timeline to the actual timeline ?

Thanks

Best regards

Hello,
add and reduce the video tracks and look at the end of the timeline.

You add again empty video track(s).
You move the wanted video parts to the new track(s).
After this you delete the original video track(s) with some unwanted content data after some hours which extends the timeline to x hours.

Best regards,
Alexander