Slow Motion is choppy...anything to do with XL1s? at DVinfo.net

Stan Szeto · February 4th, 2005, 06:51 PM

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.

Jack Smith · February 6th, 2005, 01:41 AM

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?
smitty

Rob Lohman · February 6th, 2005, 06:13 AM

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.

Stan Szeto · February 6th, 2005, 01:43 PM

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?

Daniel Kohl · February 6th, 2005, 03:28 PM

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.

Stan Szeto · February 6th, 2005, 03:51 PM

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.

Daniel Kohl · February 6th, 2005, 03:55 PM

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!

Rob Lohman · February 8th, 2005, 04:23 AM

<<<-- 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).

February 4th, 2005, 06:51 PM	#1
Stan Szeto New Boot Join Date: Feb 2004 Location: Central Valley, CA Posts: 11	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.

February 6th, 2005, 06:13 AM	#3
Rob Lohman RED Code Chef Join Date: Oct 2001 Location: Holland Posts: 12,514	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. __________________ Rob Lohman, visuar@iname.com DV Info Wrangler & RED Code Chef Join the DV Challenge \| Lady X Search DVinfo.net for quick answers \| Buy from the best: DVinfo.net sponsors

February 6th, 2005, 03:28 PM	#5
Daniel Kohl Contributor Join Date: Dec 2001 Location: Frankfurt, Germany Posts: 571	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. __________________ Daniel Kohl Frankenstein meets XL1

February 6th, 2005, 03:55 PM	#7
Daniel Kohl Contributor Join Date: Dec 2001 Location: Frankfurt, Germany Posts: 571	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! __________________ Daniel Kohl Frankenstein meets XL1

February 8th, 2005, 04:23 AM	#8
Rob Lohman RED Code Chef Join Date: Oct 2001 Location: Holland Posts: 12,514	<<<-- 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). __________________ Rob Lohman, visuar@iname.com DV Info Wrangler & RED Code Chef Join the DV Challenge \| Lady X Search DVinfo.net for quick answers \| Buy from the best: DVinfo.net sponsors

February 6th, 2005, 01:41 AM	#2
Jack Smith Major Player Join Date: Nov 2003 Location: ontario Posts: 445	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? smitty

February 6th, 2005, 01:43 PM	#4
Stan Szeto New Boot Join Date: Feb 2004 Location: Central Valley, CA Posts: 11	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?

February 6th, 2005, 03:51 PM	#6
Stan Szeto New Boot Join Date: Feb 2004 Location: Central Valley, CA Posts: 11	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.