Roz Biking
@rozbiking.bsky.social
Less Talking More Biking
Cycling, cross country, mountain biking and downhill around Lyon/France
https://blog.rozk.net
https://www.youtube.com/@RozBiking
Cycling, cross country, mountain biking and downhill around Lyon/France
https://blog.rozk.net
https://www.youtube.com/@RozBiking
Pinned
Roz Biking
@rozbiking.bsky.social
· Jul 29
My own fisheye removal filter for GoPro 8:7/4k/60fps.
Keep the framing, eat the fish, who needs stabilization anyway
code.rozk.net/roz/avidemux...
#mtb #gopro #code
Keep the framing, eat the fish, who needs stabilization anyway
code.rozk.net/roz/avidemux...
#mtb #gopro #code
Cthulhu's trails - Long forgotten ones
YouTube video by Roz Biking
youtu.be
November 15, 2025 at 3:32 AM
A flower in the mist
November 14, 2025 at 4:59 AM
A flower in the mist
Cthulhu's trails - Escaping by the stream
YouTube video by Roz Biking
youtu.be
November 14, 2025 at 3:34 AM
les français faites gaffe l'hiver c'est dans une semaine 😂😭🥶
November 12, 2025 at 2:36 PM
les français faites gaffe l'hiver c'est dans une semaine 😂😭🥶
Cthulhu's trails - Crossing the swamp
YouTube video by Roz Biking
youtu.be
November 12, 2025 at 4:24 AM
Cthulhu's trails - Trailer
Cthulhu got a job, now he's dealing GPS tracks near the entrance to the Grand-Parc - some long forgotten trails, sometimes just a stream, sometimes just a swamp, quite often just a dead end #mtb
www.youtube.com/watch?v=IMex...
Cthulhu got a job, now he's dealing GPS tracks near the entrance to the Grand-Parc - some long forgotten trails, sometimes just a stream, sometimes just a swamp, quite often just a dead end #mtb
www.youtube.com/watch?v=IMex...
Cthulhu's trails - Trailer
YouTube video by Roz Biking
www.youtube.com
November 11, 2025 at 12:47 PM
Cthulhu's trails - Trailer
Cthulhu got a job, now he's dealing GPS tracks near the entrance to the Grand-Parc - some long forgotten trails, sometimes just a stream, sometimes just a swamp, quite often just a dead end #mtb
www.youtube.com/watch?v=IMex...
Cthulhu got a job, now he's dealing GPS tracks near the entrance to the Grand-Parc - some long forgotten trails, sometimes just a stream, sometimes just a swamp, quite often just a dead end #mtb
www.youtube.com/watch?v=IMex...
The craziest cross country ride i've ever made, the videos are coming, slowly
November 10, 2025 at 2:36 PM
The craziest cross country ride i've ever made, the videos are coming, slowly
What's better than a vaccine ? Two vaccines !
October 29, 2025 at 4:30 PM
What's better than a vaccine ? Two vaccines !
her zigzaging is awesome
Lucy Downs Blasting and Schralping #mtb #mountainbike #mountainbiking
https://youtu.be/VIHdWCauKD8?si=t0FZQmhRNorXj0a3
https://youtu.be/VIHdWCauKD8?si=t0FZQmhRNorXj0a3
VITAL RAW - Lucy Downs Blasting and Schralping
Lucy Downs spends as much time in the air as she does sliding around corners for an awesome Vital RAW! #mtb #bike #mountainbike
youtu.be
October 28, 2025 at 1:11 PM
her zigzaging is awesome
that moment when you check at your glasses while wearing another pair of glasses 😅
October 28, 2025 at 7:27 AM
that moment when you check at your glasses while wearing another pair of glasses 😅
My Sram eagle transmission, the crankwheel is a XX, the cranks are XO, the cassette is a GX and the dérailleur is XO with AXS
October 27, 2025 at 12:35 PM
My Sram eagle transmission, the crankwheel is a XX, the cranks are XO, the cassette is a GX and the dérailleur is XO with AXS
So i forgot to say i've finished my new fisheye removal filter, it got 6k views in 4 days, not that bad, now all i need is to recover from that damn F* covid #mtb
youtu.be/QPBNYdneCrY
youtu.be/QPBNYdneCrY
New fisheye removal filter - Ready!
YouTube video by Roz Biking
youtu.be
October 13, 2025 at 6:44 AM
So i forgot to say i've finished my new fisheye removal filter, it got 6k views in 4 days, not that bad, now all i need is to recover from that damn F* covid #mtb
youtu.be/QPBNYdneCrY
youtu.be/QPBNYdneCrY
I left my Seagull "1st of May" running for a week without manual rewinding, it lost only 1 second per day, that's a good score actually
October 10, 2025 at 12:25 PM
I left my Seagull "1st of May" running for a week without manual rewinding, it lost only 1 second per day, that's a good score actually
High probability of fog banks this weekend in the Grand-Parc, the giant rising sun should be there too °°3
October 9, 2025 at 7:01 AM
High probability of fog banks this weekend in the Grand-Parc, the giant rising sun should be there too °°3
I made myself a 60km track into the Grand-Parc
September 27, 2025 at 3:56 PM
I made myself a 60km track into the Grand-Parc
bikeeeee !!! it's cleanup daaaaayyy
September 27, 2025 at 9:50 AM
bikeeeee !!! it's cleanup daaaaayyy
New fisheye removal filter - Preview
New method based on physical sensor size:
- Fisheye-aware subsampling in linear YCbCr color space
- 4:3 final aspect ratio with minimal cropping
- 115° horizontal field of view
(best viewed in 4k, puke bags not included)
www.youtube.com/watch?v=9IVe...
#mtb
New method based on physical sensor size:
- Fisheye-aware subsampling in linear YCbCr color space
- 4:3 final aspect ratio with minimal cropping
- 115° horizontal field of view
(best viewed in 4k, puke bags not included)
www.youtube.com/watch?v=9IVe...
#mtb
New fisheye removal filter - Preview
YouTube video by Roz Biking
www.youtube.com
September 26, 2025 at 3:45 AM
New fisheye removal filter - Preview
New method based on physical sensor size:
- Fisheye-aware subsampling in linear YCbCr color space
- 4:3 final aspect ratio with minimal cropping
- 115° horizontal field of view
(best viewed in 4k, puke bags not included)
www.youtube.com/watch?v=9IVe...
#mtb
New method based on physical sensor size:
- Fisheye-aware subsampling in linear YCbCr color space
- 4:3 final aspect ratio with minimal cropping
- 115° horizontal field of view
(best viewed in 4k, puke bags not included)
www.youtube.com/watch?v=9IVe...
#mtb
Got a recalcitrant tire, the Tire Booster fixed it, no Co2, no battery, no power line
September 19, 2025 at 5:02 PM
Got a recalcitrant tire, the Tire Booster fixed it, no Co2, no battery, no power line
I always suspected the field of view provided by GoPro was misleading, so i spent the weekend re-coding my fisheye removal filter, this time based on the sensor physical dimensions and the focal length. I still have to figure out the exact focal length and the frame widening #mtb
September 17, 2025 at 3:47 AM
I always suspected the field of view provided by GoPro was misleading, so i spent the weekend re-coding my fisheye removal filter, this time based on the sensor physical dimensions and the focal length. I still have to figure out the exact focal length and the frame widening #mtb