urslooow

Started using the Hero3 black on 1080-30 narrow and got it transferred to computer but windows video and quick time do not display fractions of a second. is there a way to do it or turn it on? thx

Scooter70

Are you trying to figure out laptimes? I had the same issue and ended up installing GoPro's editing software.

http://gopro.com/software-app/gopro-...-edit-software

froggy47

To my knowledge gp hero3 does not have a timer built into it. Are you trying to lay timing on top of gph3 video somehow?

urslooow

yes trying to get lap times. I don't care about laying the time on the actual video I just wanna get lap times to the 1/100th of a second during play back ths

RDnomorecobra

i know the preview panel in Windows movie maker has fractions. you could try importing it into that and playing it back

rbl

Not going to happen. I doubt the frame rates will give you that accuracy, much less watching it as a video.

FuriousDonuts

Getting it down to 1/100th of a second will be impossible since the video was recorded at 30 frames per second, which means each frame advances every .033 seconds. That also means at 100mph, you're traveling ~5 ft between every frame. Both of these factors make it tough to pin down exactly when you cross the start/finish.

Assuming you're ok with those parameters, you can get a pretty close estimate. +1 on using a video editor. You can cut the video on the nearest frame when you cross the start & finish, and if it doesn't give you the fraction, just count the number of frames after the last whole second and multiply by 0.03333...

drivinhard

30 fps so you only have 30 samples per 1 sec. close enough for ballpark timing

lefrog

This is going to be better than any GPS timer anyway since they run at 10Hz. You would have to run a GoPro black at 120fps to get down to the 1/100th accuracy.
Any decent video editing software will count frames. Even the free Windows Live Movie Maker that comes with Windows will give you that accuracy (that is 3.33/100th at 30fps).

urslooow

do u guys use the roll bar moune or the windshield?

lefrog

If you have a rollbar, use the rollbar mount.
If you don't, you can still attach it to the passenger bar on the dashboard if you have one of these flex straps.

Scooter70

It depends on what you want to see. I like to see the track so I put a sticky mount behind the rearview mirror. The only issue that I have with it is that it rattles a little bit so there's some extra in the audio. I'm fixing that this year with an external mic that I will run out the back near the exhaust tips. If you want to see more of the driver, I'd go for a rollbar mount.

JDIllon

Steve, I mount the camera on the windshield to get a better view of the track. I don't have the GoPro 3, I have the Hero 2 so when I have mounted it on the roll bar, the view is to much of a wide angle for what I want. Try both and see which one you like better. Hope to see you at an event in the near future?? JD