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Laptimer Grand Prix crashed on video export
Posted: Sun Feb 12, 2023 11:35 pm
by Random Direction
I am having trouble exporting videos from the Grand Prix version. Whether I am exposing a single lap or a series of laps, the app crashes part way in to the rendering of the first lap. If it helps, the video contains rejsarubbertrack tyre temperature data as well as OBD and external GPS data. The raw video is captured on the iPhone camera with default camera settings.
iPhone info is as follows:
Laptimer 24.7.1
iPhone 14 Pro with iOS 16.3 and 153GB of available space
Laptimer documents and data size is 35.69GB
Thanks.
Re: Laptimer Grand Prix crashed on video export
Posted: Mon Feb 13, 2023 8:58 am
by Harry
Please export a lap that crashes to .hlptrl and send it to me (
Harry@gps-laptimer.de). I will check if I can reproduce the problem.
Re: Laptimer Grand Prix crashed on video export
Posted: Mon Feb 13, 2023 11:30 am
by Random Direction
I have just emailed a one-lap export. Please let me know if you need anything more.
Your help is much appreciated.
Re: Laptimer Grand Prix crashed on video export
Posted: Mon Feb 13, 2023 1:08 pm
by Harry
Thanks, I have received it.
Actually I found two issues with tires:
#1 problem in inport (which occurred for me when importing your export)

#2 crash when drawing wheel images using a blur effect that LapTimer uses for the iOS version
The later is what happened for you. It looks like it is an issue with late iOS version - haven't seen this before.
I have removed the blur effect for now, it just added a small optical improvement.
To work around for now, please disable tires overlays in when generating an overlaid video. You can find that setting when pressing Video ‣ Export. Swipe to page two of settings in Overlay Configuration and change the bottom selection to "No Tires".
I will add the fix to the next bugfix release.
- Harry
Re: Laptimer Grand Prix crashed on video export
Posted: Mon Feb 13, 2023 10:59 pm
by Random Direction
Thank you, much appreciated
