Distorted overlay output in exported video

jakecraige

Hey, I'm running RaceChrono Pro 8.0.8 on my iPad Pro (3rd Gen, iPad OS 16.5.1 (c)) and seeing an issue with the overlay in video output being distorted to be entirely unrecognizable. The overlay looks fine when I use it normally in the app itself, but if I try to export an mp4 it gets distorted (it's like it's stretched by pulling at the top right and the bottom left in both directions to where it just looks like stretched pixels)

I was attempting to export a single lap from video channel 1, no pip, no fade, and simplified the overlay to just the watermark and it still happens. The only way I'm able to get a "clean" video output is to make an entirely blank overlay with everything turned off.

I can send a screenshot or video of what I'm seeing if the description isn't enough or you aren't seeing this being reproducible, just let me know where to send it

aol_of_RaceChrono

It's definitely not something that usually happens, but I've seen this happen before with some exotic video sources. I remember correctly, the pixel format has been something not supported by iOS (or RaceChrono), or something like this. Did you post process the video file with some app, and/or what is the original source of the video?

you can send screenshots and samples to tracks(at)racechrono.com

jakecraige

Hm, that could be it for sure. The videos are originally from my Go Pro Hero 9 but I did run them through a third party compression app (https://apps.apple.com/us/app/compress-videos-resize-video/id1473857051) to get the file size down. I don't think I've tried to see if the behavior is any different on the uncompressed one

aol_of_RaceChrono

@jakecraige Probably is. The raw videos from GoPro should work just fine. Here's our video compression instructions using Windows/Mac/Linux FFmpeg command line tool: https://racechrono.com/article/faq/how-to-downscale-my-source-video-files