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Often, a higher frame rate is only possible with a lower resolution.
For example, theViofo A229can record4Kat 30fps (that’s frames per second), or 1440p at 60fps.
The front camera of the Viofo A329 dash cam, used for my testing
Only very recently have dash cams had the ability to shoot 4K video at 60fps.
But should you pick this option?
Or should you dive into the options menu and record 4K at 30fps instead?
The front camera of the Viofo A329 dash cam, used for my testing
I installed the dash cam in my car and completed several journeys using both frame rate options.
The camera resolution was set to 4K and I left all of its other controls in their default configuration.
To make the test as fair as possible, I drove the same route twice.
I then transferred the footage to my computer for a closer look (see below).
Viewed at normal speed, both videos appear sharp and smooth, with plenty of detail.
But the recordings are pretty much identical.
Details like licence plates and road signs are clearly visible, especially when the footage is paused.
Slow the footage down to half-speed though, and the difference between 30 fps and 60fps becomes clear.
Again, when played at full speed the 30fps and 60fps recordings looked very similar.
But, as expected, when slowed down to half-speed it was the 60fps video that played more smoothly.
Naturally, driving at a higher speed means more distance is covered in each frame of the recording.
Lastly, theres a difference in file size.
