Tagged with lapse - Personal View Talks

GoPro Hero 2 - Time laspe at Sand Dunes National Park, CO.

solarwnz — Mon, 07 Jan 2013 12:24:07 +0000

Hello all!

This past September I took a trip out to Colorado to visit my friend June. We drove down from Boulder to Salida to hike at the Sand Dunes National park. The Sand Dunes are deceptively big. They don't look it but once you get up close you see that they are HUGE! Before hiking up (which was the most difficult and fun hike I ever experienced) I set my GoPro Hero 2 on a small Joby Gorrillapod by our camp site and set the time lapse feature to take a photo every 2 seconds. This very short video of the sunset is all 2700 plus pictures - which was about an hour and half. You'll me in the last few frames. :-)

Last month I purchased the newest GoPro Hero 3 which sports much better low light. I am going to do another time lapse around my town to see how the new model handles sunsets.

Anyway, I thought I would share this Sand Dune Sunset video with everyone. Enjoy!

A Wild Year

QuinEtiam — Tue, 20 Nov 2012 20:08:02 +0000

Motion time lapse vid with GH2

ed_lee83 — Wed, 14 Nov 2012 21:09:17 +0000

Hello all! Wanted to share this time lapse video I shot exclusively on the GH2 in my home town of Hong Kong. It's become my spare camera after one year of heavy usage, but it's still alive and kicking! Mainly shot on 14-42mm lens with circular polarizer. Powered with a generic DC coupler + Sony F battery adapter.

AVCHD 1080p time lapse

balazer — Sat, 26 Nov 2011 04:10:11 +0000

You can shoot video in any mode and use software post-processing to apply any speed-up that you want. I shoot with a wide shutter angle and use frame blending to make the motion look smooth. This simulates severe undercranking with a 360-degree shutter.

This particular example was shot on a hacked GH2 in AVCHD 1080p 24-fps mode with the shutter speed set to 1/2 s. That makes the recorded video have 13 frames for each picture taken, for an effective frame rate of 23.976/13, or about 1.84 fps. You can set the GOP length to 13 frames, which will give you one I-frame for each picture taken, and then use just the I-frames in decoding. That increases compression efficiency and gives you longer recording times. The shutter angle here is 332 degrees, or 92%, which isn't bad, but ideally you want to get closer to 360 degrees so that you don't have discontinuities in the motion trails. If I did this again, I would have shot 8-fps in 300% variable mode with a 1/8 s shutter speed. Using a lower frame rate of course means there is less video data that needs to be processed.

Here's the video data flow:
camera MTS -> Haali Media Splitter -> ffdshow tryouts decoder -> Avisynth -> makeAVIS -> Sony Vegas

Here's my Avisynth script for doing 65x speed-up: 16.25x from undercranking and 4x from frame blending:
DirectshowSource("input.MTS")
SelectEvery(13)
c1=selectevery(last, 4, 0)
c2=selectevery(last, 4, 1)
c3=selectevery(last, 4, 2)
c4=selectevery(last, 4, 3)
blend1 = Overlay(c1, c2, mode="blend", opacity=0.5)
blend2 = overlay(c3, c4, mode="blend", opacity=0.5)
Overlay(blend1, blend2, mode="blend", opacity=0.5)
AssumeFPS("ntsc_video")

Time lapse photography has practical applications. Say you are filming a car driving by at 10 miles per hour, but you want to make it look like it's going 60 miles per hour. If your target format is 24 fps with a 180-degree shutter, you can shoot 24-fps with a 1/25 s shutter, and then blend the first three frames of every six into one output frame. Or you can shoot 8-fps in 300% variable mode with a 1/8 s shutter, and drop every other frame. If the car is going straight down a road with no bumps or curves, the effect will be totally convincing. :)

Time Lapse Soft for GH2

jacogh — Tue, 28 Feb 2012 12:37:29 +0000

Is some one working on soft solution for time lapse? I am not talking about 2 fps mode. Some kind of time interval that let do separate photos.

GH2 slower timelapse with intervalled stills, how ?

robbie75vr — Tue, 27 Dec 2011 20:35:13 +0000

Is it possible to make a timelapse slower than 300% with intervalled stills in the gh2?

Thanks