Video and data overlay out of sync

Chad-1stgen · Post by **Chad-1stgen** » Fri Sep 11, 2015 1:57 am

Hi,

Just got home from a trip to Europe and a bucket list drive on the Nurburgring. While driving on the track was one of the funnest days ever, I have only one lap with good video. Anyhow, I've tried to overlay two different laps and both have the problem where the video starts a short ways after the bridge, despite manually starting video before the bridge and telling HLT to add several seconds in the overlay screen to the start of the lap. This results in the video showing events before the GPS does. I can watch the raw video and see that all of the video is there and working.

Any idea what is causing this? Also, the message "Number of laps available for multi lap overlays reduced due to inconsistent sync points. Please adjust the lap's sync point and agree to adjust the full session."

I'm using HLT Grand Prix Edition v19.0.12 on an Iphone 5S.

thanks

Post by **Harry** » Fri Sep 11, 2015 7:10 am

So you are saying the video extends before the start of the lap, you are selecting a value bigger zero using the Intro slider, and the overlaid video still starts behind the bridge? Please clarify.

Please ignore the message on non continuous laps. For BTG recordings, you have a gap between gantry and bridge by definition. So even with a multi lap video, LapTimer can't overlay two or more laps in one video as these gaps are not supported.

Harry

Chad-1stgen · Post by **Chad-1stgen** » Fri Sep 11, 2015 4:53 pm

Harry wrote:So you are saying the video extends before the start of the lap, you are selecting a value bigger zero using the Intro slider, and the overlaid video still starts behind the bridge? Please clarify.

Yes this exactly.

Harry wrote:Please ignore the message on non continuous laps. For BTG recordings, you have a gap between gantry and bridge by definition. So even with a multi lap video, LapTimer can't overlay two or more laps in one video as these gaps are not supported.

Harry

Ok thanks.

Post by **Harry** » Fri Sep 11, 2015 4:58 pm

Hmm, no idea, haven't seen this before. Please export a single lap this issues occurs to .hlptrl and send it to me please. Maybe I can see something...

- Harry

Chad-1stgen · Post by **Chad-1stgen** » Fri Sep 11, 2015 5:41 pm

Harry wrote:Hmm, no idea, haven't seen this before. Please export a single lap this issues occurs to .hlptrl and send it to me please. Maybe I can see something...

- Harry

Ok I sent you the file of one of my laps. I've also uploaded a short clip of the beginning of the lap to youtube for you to see.