timestamp oddities - help to fix

[Quoddity]

What I want to know is how to reencode my video so every second is "mapped".


I recently made a few videos using OBS with a videocam, but the resulting video does not always allow me to land on a specific time. I've never seen this before, so I'm surprised this happens.
Sorry, I'm a noob, so I don't know the technical words to describe this. Here are two examples of what I mean.

1. if I want to trim the video, I cannot necessarily cut off the video at a specific second, but sometimes it cuts several seconds away, unless I reencode it.
2. Similarly, if I want to replay a few seconds of a video, I cannot necessarily choose to start it at a specific time, but instead several seconds away.

I want this to go away and am wondering:

Will -accurate_seek accomplish this if I reencode the videos using ffmpeg?
If not, can someone suggest a means to make the timestamps in the video to function normally?
I don't expect this to be difficult, but I have no idea what to even search for.

thank you.

[VoodooFX]

Probably you meant having every frame as keyframe, when recording with OBS use codec like Lagarith or MagicYUV.