I'm pretty new in camera tracking and Blender (2.80). I have a "long"(1 minute) dash cam footage of driving on the road, where most trackers stay visible only for a second or less, so a lot of trackers must be created, which is tedious. Tracking whole footage first and solving camera in the end seems too risky approach, so I wonder if I can solve only part of the footage until some pseudo-end frame number to make sure trackers are good, then repeat with incremented pseudo-end number until the end of footage. So far, I have tried setting end frame in Blender scene settings or in timeline, but solver still uses whole footage.
To clarify idea, I want to track only 2 first seconds of the 1-minute footage and then solve camera for only first 2 tracked seconds, then add tracks for next 2 seconds and again solve camera, but in total for 4 first tracked seconds. And repeat until I have whole footage covered. This way I will see results faster and could start improving tracking accuracy right away.
Example frame below, but in general, question still holds for any dash cam video or similar to CGMatter tracking tutorial (first 2 seconds) at https://www.youtube.com/watch?v=6Vo-jyWlDhM, but imagine video goes way longer.