View Full Version : SloMo from an EX1 ??


Andy Nickless
July 23rd, 2008, 11:33 PM
I'd be interested to hear from anyone who's managed to produce SloMo from a Sony EX1. (Using Mac in PAL land in particular).

Cinema Tools doesn't want to know 720p 50 fps (I followed the manual exactly but "Conform" was grayed out in the File menu). So where should I go from here?

I thought I'd cracked it with Compressor but on closer scrutiny, the best result I could get was choppy to say the least.

I've also tried Shake but no luck there either. Maybe I'm doing something wrong.

Any help would be very welcome.

Alister Chapman
July 24th, 2008, 12:58 AM
I've shot loads of footage at 50P and it works fine for me playing back at 25fps in the FCP timeline.

Andy Nickless
July 24th, 2008, 01:23 AM
I've shot loads of footage at 50P and it works fine for me playing back at 25fps in the FCP timeline.

In SLOW MOTION ??

I just changed my Easy Setup to 720p 25 fps, created a new timeline, checked the timeline was 25 fps - the footage simply plays at normal speed.

Paul Kellett
July 24th, 2008, 02:51 AM
I've shot slo-mo, viewed it in vegas and FCP, plays fine in both.
Recorded in 720/25p, frame rate at 60fps.

Paul.

Andy Nickless
July 24th, 2008, 03:16 AM
Thanks Paul and Alister.

Are you saying:
Shoot 720p at 50 (or 60 fps) then drop the QT into a 25 (or 30) fps timeline . . .
and it plays back in Slow Motion?

(Mine just plays at normal speed - unless I'm having a brain failure of some sort).

Paul Kellett
July 24th, 2008, 03:33 AM
Yes.
I record in 720/25p format then in slo-mo put the frame rate up to 60fps.
If you record in 720/50p then jumping up to 60fps isn't much difference, whereas 25 up to 60fps is.

Paul.

Alister Chapman
July 24th, 2008, 03:42 AM
As Paul points out you need to make sure your in the right mode. 720/50P shoots at 720 50fps and plays back at 50fps, so if you drop it in to a 25fps timeline or 50fps timeline it plays back at normal speed.

However if you shoot at HQ 720/25P and then turn on S&Q motion (camera settings page of the menu or press and hold the button on the EX3) and change the frame rate in the S&Q menu then you get slower or quicker than real time playback.

You can use S&Q motion at 1080P up to 30fps.

If you have shot at 720/50P then you can drop the clips into a 25P timeline and slow the clips down by 50% which should then play the clip at 25fps.

Patrick Williams
July 24th, 2008, 03:42 AM
Andy,
It sounds like you want to actually shoot slow-motion with the camera, and there is an easy way to do it. Set the camera to record at 720p HQ 25 frames per second as you would for a normal recording. Then in the camera menu turn on the S&Q setting, and dial in your frame rate up to 60 frames per second. The normal playback of the video will now be slow-motion, and you can drop the clip into a 25fps timeline and it will still be slow-motion. You can't record audio using this method, and you can only overcrank to 30 frames per second if you use 1080p 25. However, most of us think that you can drop a 720p overcranked shot into a 1080p timeline and the video will still look pretty good.
Just noticed that Alister had the posted the answer while I was typing.

Andy Nickless
July 24th, 2008, 03:53 AM
I record in 720/25p format then in slo-mo put the frame rate up to 60fps.

Sorry Paul, I think you've got this wrong.

The idea is to overcrank (record at 50 fps for example) in camera, then play back at the normal speed (25 fps over here) to get the most beautifully smooth slow motion.

With the method you're quoting, FCP does an awful job of interpolating (if there's action in the footage, which of course, there must be). It has to create frames to make the playback slower.

Please watch Michael Mench's tutorial on Slow Motion:
http://library.creativecow.net/articles/mench_michael/slow_motion/video-tutorial.php
It uses Shake but even if you don't have Shake, it's well worth watching the beginning to see what an awful job FCP makes of interpolation.

If you don't have Shake, try this method:
http://www.kenstone.net/fcp_homepage/speed_changes_motion.html

Andy Nickless
July 24th, 2008, 04:01 AM
Set the camera to record at 720p HQ 25 frames per second as you would for a normal recording. Then in the camera menu turn on the S&Q setting, and dial in your frame rate up to 60 frames per second. The normal playback of the video will now be slow-motion, and you can drop the clip into a 25fps timeline and it will still be slow-motion.

Ohhhhh . . ?

Sorry Paul, I think you've got this wrong.
Oh . . . NO!
(I wish I hadn't posted that).

Sincere apologies, Paul - I obviously have the EX1's settings wrong. Patrick's explanation was clearer than yours but I should have asked you what you meant by changing the frame rate - you meant "in camera" right?

I think I know where my mistake is with the camera and slow motion now. I'll check it out and continue my apology when I know more!

Paul Kellett
July 24th, 2008, 04:02 AM
Andy.
I've recorded enough slo-mo and fast-mo with my EX1 to know what i'm doing.
Have a look at

www.vimeo.com/paulkellett

Look at my friends mma class, there's slo-mo on there, recorded in 720/25p format, in camera slo-mo switched on, frame rate at 60fps.

If you've recorded slo-mo in cam, then view it in cam, if you've recorded correctly then it will play back slow on the camera screen, if that same footage plays back wrong on your editing suite then obviously that's set up wrong.

Paul.

Paul Kellett
July 24th, 2008, 04:08 AM
Ha ha.
No worries mate.
You'll get it sorted and then worry what all the fuss was about.
Once you set the slo-mo frame rate to 60fps or whatever else fps, it'll stay at that until you change it .

So if i know that sometime during the shoot i'll be shooting slo-mo, and i need it in a hurry, i leave the menu set at record format so that next time i go into the menu i'll be at "change recording format", i'll quickly change that to 720/25p, then i'll switch on slo-mo and that'll already be at 60fps.
Such a scenario would be when shooting a wedding and i'm in a rush to catch the confetti being thrown so i need to change slo-mo in a hurry.

Hope this helps.

Paul.

Andy Nickless
July 24th, 2008, 04:10 AM
Thanks to all of you for your patience.

When I had a Panasonic HVX200, I could shoot at 50 fps (with sound).
If I remember rightly, it took up twice the space on the cards but it gave me the option in post of normal playback (with sound) or slow motion (with sound - for what it's worth).

Although moving to the EX1 has been one of the best decisions I ever made, I was disappointed to discover I couldn't shoot 50 fps with sound.

I overlooked the fact that the EX1 does slow motion a different way (or at least the setup is different).

So if I want slow motion, I really have to shoot slow motion.
OK - I can live with that. It's a small inconvenience for the huge leap in quality I've taken by going EX1.

George Kroonder
July 24th, 2008, 05:55 AM
Although moving to the EX1 has been one of the best decisions I ever made, I was disappointed to discover I couldn't shoot 50 fps with sound

The EX1 most certainly can shoot 720p50 (or 720p60) with sound. Just not with S&Q Mode enabled.

So you have the choice of using the S&Q function for slow (or quick) motion OR you can set up and record "regular" 720p50 and conform to another timebase in post.

George/

Richard Firnges
July 24th, 2008, 06:10 AM
If You need sound during recording You can also shoot in 720p 50 or 60 fps. To get a 25p slo motion clip You only have to change the frame rate of the clip. Since I am not a Mac user, I can't can give You no specific advice, but there is one workaround which will work in any case:
Render the 60 fps as single frames and reimport these as a new 25 fps clip.

Greetings Richard

Andy Nickless
July 24th, 2008, 06:48 AM
The EX1 most certainly can shoot 720p50 (or 720p60) with sound.
If You need sound during recording You can also shoot in 720p 50 or 60 fps.

Ha Ha!
That's a good joke!
(You'll be telling me it's possible to shoot 1080 progressive with the EX1 next)!
____________________

Seriously, thanks for that info George and Richard - I just tried it and the audio works at 50 fps, of course. I can't believe I overlooked that. It's so important to the project I'm shooting at the moment.

You've really made my day!

Paul Kellett
July 24th, 2008, 06:58 AM
No Sound is recorded in slo-mo or fast-mo recording.

And it IS possible to record in 1080 progressive. 1920x1080 25p .

Paul.

Paul Kellett
July 24th, 2008, 07:00 AM
Andy.

What's the project you're working on ?
Do you need a hand ?
I'm only about an hours drive from you.

Paul.

Andy Nickless
July 24th, 2008, 07:43 AM
And it IS possible to record in 1080 progressive. 1920x1080 25p
(I was joking, Paul)!

Do you need a hand ? I'm only about an hours drive from you.
Do I need a hand . . ?

. . . Only fairly desperately!
My partner Gill can't operate the cam for me (much) as she's changed her job and gets far less time off than she used to. This means I have to be on both sides of the camera. Not easy - especially on the occasions when it's mounted on scaffolding and I have to climb up and down a ladder to switch on and off between takes!

Funds are a problem though and shooting has to be fitted around our routine work, so it's rather haphazard. All outdoors, too, so it depends heavily on the weather.

Go here to get an idea what its about, although the new one is more serious than this:
http://www.workingsheepdog.co.uk/border_collie_DVD.htm

Paul Kellett
July 24th, 2008, 08:59 AM
Andy.
PM sent.

Thanks.
Paul.

Gerald Loidl
July 24th, 2008, 10:03 AM
Hi,
its also pretty easy to confirm footage which was shot with 720/50p with sound.
You only have to use Cinema Tools to confirm it to play back with 25 frames.
The confirm button is greyed out if you use the original file coming from the EX1, as Cinema Tools cant confirm XDCAM material.
If you convert the clip to a different codec like ProRes or uncompressed before you open it in Cinema Tools, you can simply use the confirm command. You then have perfect 25p slowmotion including sound, as Cinema Tools simply changes the frame rate then. With this workflow there is no need to use the S&Q mode for slow motion.

Hope this helps.
Gerald

Andy Nickless
July 24th, 2008, 11:13 AM
If you convert the clip to a different codec like ProRes or uncompressed before you open it in Cinema Tools, you can simply use the confirm command. . . . . . With this workflow there is no need to use the S&Q mode for slow motion.

Gerald, that's music in my ears!
Just what I was hoping to discover - a way of conforming with CT.

Thank you for posting - and thanks to everyone else who's helped me out on this subject.

Matt Davis
July 25th, 2008, 07:41 AM
Gerald, that's music in my ears!

And just when the last chord hits, there's a little pause and then... Ting!

Have you explored Compressor with the Frame Controls turned on?

http://www.vimeo.com/779651

A little demonstration of various modes available to the FCS user who shoots progressive. Note well the various recipes and their effects. Thanks Alex.

Rich Dykmans
July 25th, 2008, 08:02 AM
Nice link Matt, thanks for posting that up.