Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
06-17-2016, 07:00 AM   #1
Pentaxian
eccs19's Avatar

Join Date: Jul 2008
Location: Lisle, Ontario
Photos: Gallery
Posts: 1,458
4K Time Lapse

Quick question. I was playing around with the 4K time lapse feature last night. Took a run of 300 shots. 10 seconds between the shots. I expected about a 10 second video based on 30 fps. Video ended up being about 30+ seconds. Is the 4K feature using some crazy frame rate, or is it adding extra frames to "blend" frames together?

06-17-2016, 07:36 AM   #2
Senior Member
Kennod's Avatar

Join Date: May 2011
Location: Melbourne
Posts: 126
What software are you using to make the timelapse? Check the frame rate setting.
06-17-2016, 07:59 AM - 1 Like   #3
Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 26,187
I think you will find that multiple copies of each frame are part of the final video. That is part of how Pentax does in-camera interval video.


Steve
06-17-2016, 08:22 AM   #4
Pentaxian
eccs19's Avatar

Join Date: Jul 2008
Location: Lisle, Ontario
Photos: Gallery
Posts: 1,458
Original Poster
QuoteOriginally posted by stevebrot Quote
I think you will find that multiple copies of each frame are part of the final video. That is part of how Pentax does in-camera interval video.


Steve
That's the only thing that makes sense. I wonder if that's why it looks choppy, or if I needed a longer shutter speed and shorter pause between shots. All trial and error.

06-17-2016, 08:34 AM   #5
CDW
Veteran Member




Join Date: May 2011
Location: Big Island, Hawaii & Utah
Posts: 346
I've made time lapse videos in the past on a K3 and I never experienced what was described. I think the issue is the frame rate setting. Depending on the subject matter, the interval between frames may contribute to the choppiness. I always used 2-3 second intervals to achieve a smooth flow of cloud movement, etc.
06-17-2016, 08:35 AM   #6
Pentaxian
bobbotron's Avatar

Join Date: Jan 2015
Location: Ottawa, ON
Photos: Gallery
Posts: 1,781
QuoteOriginally posted by eccs19 Quote
That's the only thing that makes sense. I wonder if that's why it looks choppy, or if I needed a longer shutter speed and shorter pause between shots. All trial and error.
Longer shutter speeds definitely help with this kind of thing. To be honest, I find the timelapse output from pentax cameras a good starting point for TL video, like many things, it can deal with some post processing.
06-17-2016, 08:38 AM   #7
Pentaxian
RonHendriks1966's Avatar

Join Date: Jan 2009
Photos: Gallery
Posts: 8,556
Unless it changed...... The camera makes images as you told it and makes two copieus of them. 5 of those make up for one second in the movie clip. So the frame rate is 15 fps, but only 5 different frames are in it.
06-17-2016, 08:49 AM   #8
Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 26,187
QuoteOriginally posted by RonHendriks1966 Quote
Unless it changed...... The camera makes images as you told it and makes two copieus of them. 5 of those make up for one second in the movie clip. So the frame rate is 15 fps, but only 5 different frames are in it.
Yes, something like that. Some time ago there was an extensive discussion of this along with methods to remove the extra frames. I believe that the most viable solution suggested was to do it the old fashioned way and shoot the intervals as stills, crop to 4K in post, and assemble using a video editor.


Steve

06-17-2016, 09:19 AM   #9
Pentaxian
eccs19's Avatar

Join Date: Jul 2008
Location: Lisle, Ontario
Photos: Gallery
Posts: 1,458
Original Poster
All great information. Thanks all.
06-17-2016, 09:51 AM - 1 Like   #10
Pentaxian
bobbotron's Avatar

Join Date: Jan 2015
Location: Ottawa, ON
Photos: Gallery
Posts: 1,781
I decided to skip the timelapse feature all together... now I set it up to shoot intervals and merge the photos afterwards with ffmpeg. This lets you get exactly what kind of results you're looking for. I can find how I do this and post it up if there's interest.

Not a great video, but this is how I generated this timelapse.
06-17-2016, 10:16 AM - 1 Like   #11
Pentaxian
Tjompen1968's Avatar

Join Date: May 2012
Location: Norrköping, Sweden
Photos: Gallery | Albums
Posts: 1,287
The internal time laps video gets choppy due to repeated frames. There is a tutorial somewhere on the K-3 forum...
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
4k, dslr, feature, frames, full frame, full-frame, k-1, k1, lapse, pentax k-1, shots, time, video
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax K-01 Time-lapse in 4K SkipperRi Video and Pentax HDSLRs 2 09-07-2015 07:35 AM
Time Lapse enquiry smelliott Troubleshooting and Beginner Help 4 08-04-2015 02:21 PM
Time-lapse and hyper-lapse using K-3 alasseon Pentax K-3 4 06-14-2015 03:38 AM
DC time-lapse short (and hyper-lapse) using the Pentax K-3 alteredcarbon Pentax K-3 7 05-18-2015 08:04 PM
Nature Aspen Time Lapse GeoJerry Post Your Photos! 14 11-04-2014 10:06 PM



All times are GMT -7. The time now is 09:08 AM. | See also: NikonForums.com, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top