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abalashovtoday at 4:45 PM2 repliesview on HN

As a cyclist (and former racer), I still want to know how to capture videos with telemetry overlays (speed, power, HR, etc) from my head unit in a straightforward way. NorCal Cycling's videos - https://www.youtube.com/@NorCalCycling - are an excellent demonstration of this at work.

Yes, I've done the Garmin VIRB Edit thing, which is the very approach recommended by Jeff (NorCalCycling) in his tutorial videos on the subject. It feels like something out of 2005. It is incredibly labour-intensive and imprecise unless you're fortunate enough to be in relatively short criteriums where you've got the battery runtime to just record the whole race. Most real-world events and rides require one to turn the camera on and off at certain moments, which then requires _hours_ of stitching together clips and correlating them to GPS fixes from the head unit (in the FIT file), and quite imprecisely at that.

There has to be a more 2026 solution to this. All you need to do is correlate the footage to the FIT data points by timestamp, in the temporal domain.

If Garmin came out with one, it would absolutely annihilate this space. To the best of my knowledge, there is no competition that offers anything turn-key, though perhaps the best of my knowledge has not aged well and by now there is something. It's maddening.


Replies

shepherdjerredtoday at 4:50 PM

Am I wrong in thinking you could do this with ffmpeg, your video files, and your data from Strava/Garmin/whatever? This feels like a program an LLM (or human!) could write pretty easily

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rjrjrjrjtoday at 4:56 PM

Insta360 does this out of the box.

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