slowing 24 fps to 18 fps

[DS GFM]

I have some Super 8 footage that I shot at 18fps and had transferred at 24 fps. How do I slow it down without dropping frames?

[lata]

Hi

How long is your video clip, that is how many frames.

You can use the process to create a Ulead Image Sequence file.
That process rips the frames to individual images. You then reconstruct the images to any frame rate you wish.

A little tricky setting the correct frame rate for the project. So may need a bit of testing to get used to the process.

You say the video was recorded as 18 fps then recoded to 24fps, did that not add duplicate frames, 6 frames every minute?

[BrianCee]

I am not quite sure from your question what your problem is - whether it was transferred at 18 or 24 fps how are you intending to play the video ???

Your video player (and VideoStudio) is surely expecting and playing at 30 fps and using 18 fps will make it play faster than 24 fps does - in fact nearly twice normal speed.

*IF* the problem is that your video is playing to fast then why not just put your video in the timeline - double click on it to open the Options panel - then choose "Variable Speed" - then to get a 24fps video to play at normal speed in a 30fps system you need to drop the speed to around 80% - or just experiment until it looks right. It will do that by adding computer generated frames - so nothing will be lost

Or perhaps I have not understood your problem - in which case could you explain why you need a video at 18fps and what you intend to do with it.

[DS GFM]

I used a combination of Speed/Time Lapse set to 75% and Motion Blur effect set to 0 (not sure if that is doing anything, is it?) to get me an acceptable result, but is there a better one possible? I using many different clips from a 26 minute (after slowing down) transfer in various parts of my film. I guess frames were added, not dropped, oops. How do I go about trying this Ulead Image Sequence idea?

[BrianCee]

I would have just gone for the variable speed option myself - without involving stop motion or motion blur

Assuming you are using version X7 - to create a uis

with your video in the timeline change to the "Share" tab at the top.

Choose the top icon - computer screen

choose "Custom"

right under the 'Custom' button change the small drop down (format) to read Ulead Image Sequence (uis)

fill in file name and location then clicking on 'Start' will produce your uis file.

but I can't see how your going to use that to slow a video down - perhaps Trevor will return and explain how he would do it.

[erdna]

It's all a bit confusing to me...How didyou capture yr 24fps video. From a film projector? In this case you will get 3x18=54 flahes/s. Is it because you deleted the black frames that you need to speed-up again?

[lata]

Hi

I am also confused with the 18fps to 24 fps reference.

If you change the speed of the video playback the program will add or remove frames to achieve the new duration, these changes will cause a judder, more noticeable as the video pans.

If you create a UIS file the frames are extracted as individual images along with a UIS file.
You can now add all images to the timeline, set the image duration to 1 frame and render to a different frame rate

For instance a 10 second clip using 30 fps will contain 300 frames
Convert that to 25fps will be 12 seconds long having 300 frames.

If you use “playback speed” or render the video the 25 fps clip will now have 250 frames, loosing 50 frames.

I have to say this works when using standard size frame rates Pal and Ntsc standards but there may be problems in selecting 18 fps

And if your original video files already have duplicate frames then you have a problem. Unfortunately those can be difficult to identify
What version of Video Studio are you using X7 may be more versatile?

Whether the process is worth the effort only you can say, as you can see the results.

[skier-hughes]

I assume the OP has a projector playing at 18fps onto a screen and recorded this with his camcorder at 24fps.
Nothing should need to be done, as the 18fps movie lasted say 3 minutes, the 24fps movie will also last 3 minutes.
The movie should not be fast or slow.
It may have flashes, as the 24 fps new recording will not match the 18fps original. This is something that professional camcorders can get around by making manual settings changes, but consumer cams can't.

[erdna]

I suppose OP deletes the flashes in its recorded video and by doing this the video has to be slowed down afterwars

[DS GFM]

I sent in 450 ft of Super 8 footage which I had shot at 18 fps to a lab for processing and transferring. I had them do this kind of work for me three years ago, in standard definition. They told me over the phone that they still did SD but after I sent it there, I was told that they only did HD transfers now at 30 fps. When I got the files I had to change my entire project from 4:3 to 16:9. However, i've found out that using Variable Speed at 75% is all I need to do. This was proven yesterday when I synched some sound that I had recorded for a certain scene and there were no problems at all.

[erdna]

Ok, this is about a telecine tranfer which normally works for 24 fps film converted to 30fps via 3:2 pulldown. Your film is 18 fps, and I can understand that you have to slowdown the resulting video.