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Great interview-Jeff was always a good guy to run across in a tow yard.

Great job - very informative. Question - have you used known dimensions instead of control shot with a total station? For my work we aren't able to send surveyors out. I'm thinking if I knew the make/model of the police car for instance I would be able to use this somehow. The known dimensions are not in a coordinate system however. How would you approach that? Maybe you wouldn't have to if survey is always available.

Great video. Thank you. Is there an access to the data for practice?

Great to have you talk with Jeff, especially having had you use the data in a course you ran recently! Your conversation talking about 16-25 years got me thinking, has there been anyone look at the data (or even Jeff himself) to extrapolate the PRT into age brackets? I can see older drivers having an effect as well, could that then have a contributory effect on dragging the data down as a whole? And when it comes to autonomous vehicles, it's definitely a brave new world, and I don't think there's been enough noise about still ensuring drivers are still engaged with their surroundings. The NHTSA study into Teslas showed they were deactivating their autopilot a second before the crash, and if the driver isn't fully engaged yet the car is essentially out of control. You would normally have had time to go through the PRT motions, but if your attention is elsewhere when the car detects a crash, you're then having to react to the stimulus from the car and recognise what it wants before even starting to assess the roadway - www.washingtonpost.com/technology/2022/06/15/tesla-autopilot-crashes/

Another great episode!

Great job, Lou. Thanks for bringing FFmpeg to the forefront and for providing the public with the *.bat file. You're the man!

That's awesome! Thanks, Lou!!

Really useful, I have other [expensive] software that can do this, but being able to drag a video file onto the batch file is going to save time, so many thanks

Why are you giving Hertz a heads-up about our use/abuse of their rental vehicles? 🤔😉

Excellent info, Lou! Thanks!

Good info! Thanks, Lou!

I now use these spreadsheets in every one of my cases

Great discussion! Thanks, gents!

Very exciting stuff, Lou!

Brilliant! Great video and explanation

Capped off an interesting day with that one!

Poor trailblazer 😭

I almost got T-boned by a Toyota Highlander on an intersection. They had the right of way but I could have sworn I saw no one coming over that curve in the road. So I thought I could get my dash cam footage and do some math based on how many pixels per frame they were traveling and the length of their vehicle model to find their approximate speed. Can't have been going more than 5 over the speed limit when they were in front of me, but they could have slowed down when they saw me about to cross the intersection. Good thing there was no collision though.

how much do you charge to analyze a video of a vehicle from a fixed security camera to judge speed? Do you do this for private parties?

Great video Lou!

Very helpful! Thanks, Lou!

Nice explanation Lou!

Nice work Lou!

Very cool video and process! Thank you for taking the time to do it and share with us!

Very informative Lou. Thanks. We are using cloud Compare a lot with our point clouds from our UAV and it works great. Looking forward to the tutorial on speed estimates from security video