- a blog by markus nolf

posts tagged "gopro"

[posted: Wednesday, 2015-08-19] [category: computers & technology] [tags: , , ]

[updated & simplified] how to convert an .avi file for use in gopro studio, using only freeware more than a year ago, i published the article how to convert an .avi file for use in gopro studio, using only freeware, which has apparently seen quite some interest. recently, the article has accumulated more and more comments about problems following the tutorial. after a fresh install of Windows and GoPro Studio, the Cineform HD codec is indeed no longer available in MPEG Streamclip.

here’s an easier method of converting non-GoPro videos for compatibility with GoPro Studio, which has worked for me. [more...]

[posted: Saturday, 2014-09-27] [category: general] [tags: , , , ]

not too long ago, we came across a small patch of squirting cucumbers (ecballium elaterium) in spain, and wanted to see their rather spectacular mode of seed propagation in action:

using hygroballochory, the species can expel its seeds into distances of up to 12 meters.

footage was recorded with a gopro hero 3 black at 120 fps, 720p. clips are in real-time, 4x slow motion, and (last sequence) 8x slow motion (i.e.15 fps), respectively.

[posted: Tuesday, 2014-01-21] [category: computers & technology, general, time lapse] [tags: , , ]

i’ve been searching for an affordable standalone time-lapse solution to document the upcoming construction of a house. since there isn’t much hands-on information around, i thought i’d share the results of my extensive market research (which has taken up far too much time).

construction time-lapse options: ip cameras vs. gopro hero 3+ vs. brinno

firstly, here are the camera features i was looking for:

  • standalone system (no pc connection)
  • wide-angle lens
  • time lapse capability (interval recording)
  • external power supply
  • high resolution
  • wifi access
  • (ideally) automatic ftp upload
  • continuous operation for 6+ months
  • relative outdoor suitability (to be mounted under a roof)

the camera is going to be mounted on the neighbour’s house, and the distance/height situation requires a horizontal field of view of at least 110 degrees – hence the wide-angle requirement. wifi is available on site, as is a relatively protected camera position under the roof. the construction phase with most outside changes is estimated at several months, so i’m aiming for an interval between 10 and 30 minutes. [more...]

[posted: Thursday, 2013-01-31] [category: computers & technology] [tags: , ]

setting a gopro hero3 camera to time lapse mode and a very short interval (0.5 or 1 second) will lock the entire time-series’ exposure to that of the first frame.

example: a recent sunrise time lapse attempt

gopro hero3 auto exposure problem in time lapse mode: customer support explains cause, promises solution depending on the situation, the result may be an SD card full of overexposed/washed out or drastically underexposed pictures. this is obviously problematic for time-lapse recording of relatively fast-changing scenes (esp. with changes in lighting), but even more so if you just want to do action photography and not think about pressing the shutter button manually (i.e. while whitewater rafting or skydiving).

Sorry for the inconvenience, would you believe that’s a feature rather than a bug?

gopro customer support just explained in a response that the problem is not actually a software bug: “the skydiving community requested the feature”. they are, however, working on making it an option in the settings menu: [more...]