Altamont Road with ContourHD, GPS and Power telemetry

[getflaffy]

if you go any slower you fall down, but the cams great

[realukbloke]

@getflaffy I can ride that hill about a minute faster but it still looks slow. It could be worse - one video I had to speed up 2x to match what a pro cyclist could do!

[pat6270]

Very cool! Does the cam export GPS video along with the regular video (as above)... or did you have to use some sort of post production overlay to get that done?

[realukbloke]

@pat6270 The GPS comes from a Garmin, and is added to the video as an overlay using a video editor. The software for generating the overlays is available on the biketelemetry web site. Cheers!

[jacob6379]

dude is that your heart rate bpm 174? what the location?

[realukbloke]

@jacob6379 Yes, and a heart rate of 174 isn't unusual for me on a climb. I've seen it go as high as 185, though my resting heart rate is more like 40! Sometimes the Garmin heart strap will report 200-240 on descents and that's clearly a bogus reading. The road is in Los Altos Hills, CA in the Bay Area not far from San Jose. There are more videos like this under the user biketelemetry.

[skcyclist]

Nice...

[46neno]

can some one tell me name of this music pis a like it :D



[realukbloke]

@46neno Dreamscape (Long Edit) - you should see the music download links under the video. This track is one that YouTube offers for free for putting on top of your video.

[jasper9890]

Any chance you would share your python code? Very interested in doing the same.

[realukbloke]

@jasper9890 It's a substantial amount of code and I'm planning to make it into a product. Development is going well and hopefully I'll have something to announce soon. Thanks for the comment.

[teenkertoy]

Very clever. I can see where all the data came from, but where did you get the gear ratios and BRAKE data from? Is the gearing derived from your speed/cadence ratio, and the BRAKE from a rapid decrease in speed?

[realukbloke]

You're on the right path! There's quite a bit more to the algorithms to give believable data.

[teenkertoy]

close enough! The shimano flightdeck system might work too, but good luck recording the data.

[realukbloke]

I suppose you could make something that hooks into the Flightdeck contacts inside the brake levers ...

[llbr22]

That layout is perfect! nice job! Mind if I ask.. how do you get the raw data to show as a playable graphic with an alpha ch. or transparency? I use Sony Vegas Studio as well. Thanks!

[realukbloke]

It is about 4000 lines of python programming. It generates a sequence of 32-bit RGBA PNG graphics files and it does use the alpha channel for transparency. Does that help?

[llbr22]

Yes makes sense.. and helps me realize.. it would be tough for me not being a programmer. :-) Again.. Great work!!

[llbr22]

Nice! how did you get the telemetry overlay'd on the video? It looks great! Very clean layout.

[realukbloke]

I wrote a program to read in all the raw data, process it and generate the template overlays. I then composite the video and the overlays using standard video editing software such as Sony Vegas Studio. I've tried to keep the layout clean and simple. It would be easy to get carried away with bells and whistles, but too much eye candy just makes it more distracting. The objective for me is to use these videos while working out on the rollers or the bike trainer. Thanks for the comment!