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Old February 4th, 2005, 06:51 PM   #1
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Slow Motion is choppy...anything to do with XL1s?

I'm new to the videography arena and I must say, it's a lot more fun than I had thought. I don't know if this has been answered in this forum but I couldn't find the answer to it.

I recently filmed a large project with the XL1s and I edited the video footage. I noticed that some of the footage that I made slow motion, were very choppy.

Why is that? Is it a frame rate issue on the XL1s or is it the editing software? How can I adjust it on the camcorder since I can't seem to find it.
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Old February 6th, 2005, 01:41 AM   #2
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If the scene was fast movement across the screen you may get a more "choppy " slomo.What nle are you using and what type of file are you creating and what are you viewing it on? NTSC or computer monitor?
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Old February 6th, 2005, 06:13 AM   #3
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Welcome aboard DVInfo.net Stan! With all due respect you haven't
searched enough. Slowmotion has been often talked about here
and it boils down to two things:

1. yes your fps is one of the problems. Best (in case of DV) is 60i (interlaced, then 30p (progressive/frame mode) and finally 24p.

2. some programs produce far better results than others

Always shoot stuff that is to be slow motioned in 60i.

I entered the word "slowmotion" into our search engine, and the
first page with results already included such threads as:

http://www.dvinfo.net/conf/showthrea...threadid=35298
http://www.dvinfo.net/conf/showthrea...threadid=33916
http://www.dvinfo.net/conf/showthrea...threadid=35552
http://www.dvinfo.net/conf/showthrea...threadid=34442
http://www.dvinfo.net/conf/showthrea...threadid=34632

This already talks about basically everything you need to know
about slow motion and our camera's. Make sure you check the
"remove/reduce interlace flicker" option in your NLE of choice as
well.
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Old February 6th, 2005, 01:43 PM   #4
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I guess I probably don't understand too much of the video terminology yet, which is why I probably thought the search results made no sense to me. In any case, it seems as though increasing the frame rate is the key.

How would I do that on the XL1s?
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Old February 6th, 2005, 03:28 PM   #5
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Hi Stan,

I hate to tell you this, but you should check the Handbook, this is a very basic function of your XL-1s and there are illustrations to show you exactly where these functions are on the camera. But just to give you a hand - you will find the shutter up and down button on the surface facing the back end of the camera on the manual iris/select protrusion. It is marked "shutter" and the buttons have a + and a - on them.

You can get a fake progressive scan by changing the camera menu settings in CAM. SET UP to "Frame" mode.

I hope that this helps. But really read the manual, there is some stuff about clear scan you should know about as well.
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Old February 6th, 2005, 03:51 PM   #6
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Daniel

Thanks. When I initially read the manual about the shutter, I had thought it talked about the picture aspect of the camera, not the video. The term shutter reminds me of a camera and I don't reference that with video. I reference "frames per second" with video.
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Old February 6th, 2005, 03:55 PM   #7
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No problem, I see what you mean, that is confusing. Canon mixed some strange photo camera functions into the XL-1s, which I agree, can lead to confusion.

Good luck!
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Old February 8th, 2005, 04:23 AM   #8
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<<<-- Originally posted by Stan Szeto : In any case, it seems as though increasing the frame rate is the key.

How would I do that on the XL1s? -->>>

That is correct. To do good slow motion you need more frames
per second. However, no con/pro-sumer camera has multiple
framerates (one HD camera had 60 fps I believe), so you are
stuck with either 24p/30p or 60 interlaced (which is the best to
use to kinda fake it).
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