CFR to VFR re-encode

[nat1]

I re-enconded some videos which have a constant framerate (according to mediainfo) with handbrake and I guess I forgot to select constant framerate instead of variable. I did choose "same as source" for FPS though.

My question is does it matter? I checked the output files and there's no A/V sync issues, at-least on a PC, so can I ignore it or could issues pop up on another device?

[davexnet]

same as source/variable should be fine, it would give same frame timing as the source

[jagabo]

Handbrake use a time constant which cannot exactly produce 30000/1001 (29.97) or 24000/1001 (23.976) fps. So even if you select CBR it will produce VFR to keep A/V sync from drifting.