Timelapse Help needed

Shelster

Shelster

Shelster

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I was never any good at maths, so have managed to confuse myself reet proper atm.

I am trying to attemp to timelapse video a 24 hour period, but want it covered in 10 mins when finished.

If shooting at 25fps, what inetrval between shots do i need to achieve this.

Is probably very easy to sort out, I know, but as i said, am not that good with numbers (unless its a Kronenbourg 1664 ;-)

Cheers

Paul
 
A 10 minute video at 25 fps gives you 15000 frames you need to fill. There are 86400 seconds in a day so you need to take a photo ever 5.76 seconds.
 
Panzerbjorn said:
I also hope he's either using a video camera or he's prepared to seriously shorten the life-span of the shutter on his SLR!

Panzer
Click to expand...

15,000 images won't really make a dent in the modern SLR mean shutter failure rate.

The 30D for example is rated at 100,000 while my 1D MKII is around 200-250k.

I'd say fire away mate and I'm looking forward to the clip.

Blackvault
 
I guess it depends what camera you're shooting with, not everyone is using a 1D MKII ;)

If it was a 30D for example, 15% of it's life is going to be used in a single 24 hour period.

That means you would only get a weeks worth of time-laps out of it before you were on the margins of shutter failure.

Even with your 1D you're only looking at a fortnight.

It might not be a problem if this is a one-off but it would take a very long time for a 'normal' tog to reach 15k shots - definitely a lot longer than 24 hours. :o

I see your point but I still think it's worth bearing in mind.

I do like time-laps and I'm also looking forward to seeing the clip.

Panzer
 
Panzerbjorn said:
I guess it depends what camera you're shooting with, not everyone is using a 1D MKII ;)

If it was a 30D for example, 15% of it's life is going to be used in a single 24 hour period.

That means you would only get a weeks worth of time-laps out of it before you were on the margins of shutter failure.

Even with your 1D you're only looking at a fortnight.

It might not be a problem if this is a one-off but it would take a very long time for a 'normal' tog to reach 15k shots - definitely a lot longer than 24 hours. :o

I see your point but I still think it's worth bearing in mind.

I do like time-laps and I'm also looking forward to seeing the clip.

Panzer
Click to expand...

On reflection 15k shots is a lot. I have looked and I have shot around 12k images in 3 years of owning a SLR! Maybe its best to shorten the film length considerable to a few minutes instead of the 10mins mentioned in the OP.

Blackvault
 
U think there are other ways to get a time lapse result. You don't actually need 25 different frames each second, put a second's worth of footage with the same frame. Then move on and do the same for the next "Frame".

That should cut your frame count down by a factor of 25.

Obviously your final film won't be quite as smooth, but you could play with the number of actual frames per image until you get a result you like.
 
You can use Vdub to alter the fps to get the desired length, then convert that into 25fps, it'll skip some frames to get it back to 25fps but always looks clean, unless you've been taking frames in really long intervals then it might not look so smooth.

PS. I just broke my shutter doing timelapses, 450D, costs £135 to replace, I'll have insurance next time.
 
I find that something along the lines of around 5 fps is good enough for most time lapses (star trails in my case), so I would aim for something like that and then convert it to 25fps.

With that example a 10 minute video would be 10x60x5= 3000 frames, still a lot but nowhere near as bad as 15,000 frames!
 
What's the use of it? Only reason I ask is because 10 minutes is long for any video clip, let alone a timelapse. Personally I'd aim for a 30 sec - 1 min clip for a timelapse: it'll look better and people will actually watch it without getting bored.
 
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