Time Stretch / Slow Motion Percentages

When doing slo-mo (aka Time Stretch), are there "magic" percentages that will give you better results?
For example, if I have a 2 second clip, will stretching it to an "even" multiple like 4 seconds give me a better result than, say, stretching it to something random like 3.75 or 5.32 seconds?

Ed.Mache
From what I have heard there are "magic" numbers that most instructors advise their students to use in this regard. The following is an exerpt of how I answered a similar question elsewhere:
"Advised Slow Motion Speed" sets are given as:
50%, 33.33%, 25%, 20%, 16.67%
"Advised Fast Motion Speed" set are given as:
100%, 200%, 300%, 400%, 500%
What is looked at is the even manner in which the frames are added or removed. And, the decision is based on the speed change percentage. In the case of the 50% speed set, the ratio would be 1:2, reflecting that every one frame ends up as two; 33.33% speed set, the ratio would be 1:3, reflecting that every one frame ends up as three, etc. In the case of 200%, the ratio would be 2:1, reflecting that every 2 frames become 1, etc.
It all goes to the smoothness of the motion.
ATR

Similar Messages

Time remapping / slow motion extremely jumpy with nested sequence!

I have just finished the rough-cut of a ceremony when I went back to add effects-- slow motion, color correct, etc. only to find that ANY time-change is jittery-- extremely jittery, like it's skipping frames.
For trial purposes I created a new timeline with only one video clip placed multiple times. I reduced one to 50% with frame-blending, the other 50% with NO frame-blending and the final using time re-mapping with frame-blending. At 50% I don't expect fluid movement, but they are all acceptable... Until I put a different timeline in the timeline (I think it's a "nested sequence").
When speed is slowed on ANY nested sequence it is jittery. Whether it is a single nested sequence or a multi-camera sequence, it jumps.
Has anyone else had this problem?! Is this a bug? I never noticed it until this wedding. I am using CS3 and I cannot afford the time to re-edit this ceremony with 2.0.... Unless I have no choice.

Hi Wil,
I have tried using both. Time remapping on the clip (not nested) works fine, so does 'speed change.' But both time remapping and speed change result in jumpy frames when applied to a nested sequenced clip.
I tried this on another (much lower system) and have found the same results. I am begining to think it is the footage but it seems odd that it is perfect when applied to a clip in the timeline but NOT to a timeline in the timeline (nested).
I am on vacation and do not have access to a faster machine until next late next week but for now I will try the export again to be sure Encore sees the same thing.
I am dumbfounded because I had been using 1.5, then 2.0 and now CS3 for weddings for years and have never noticed this. I have noticed it on the both the last project and now this current one.
I thought it could have been the original footage (or a camera problem except that the problems are not there until a nested sequence comes along. I will try moving the footage to my internal drive now and see what happens...
Thank you so far for giving me ideas.

Time stretch to slow down motion

I am using Adobe Premiere Elements 7. When I use the time stretch to slow the motion down, my final motion is very "jerky". Any way to smooth that out a bit better?
Thanks,
Bruce

How does the Slo-mo footage look in Preview?
Also remember that you are basically doubling the number of Frames.
This might also be of use for improving the results:
Set field options for imported interlaced video
In most video, each frame consists of two fields. One field contains the odd‑numbered lines in the frame, and the other contains the even‑numbered lines. The fields are interlaced, or combined, to create the complete image. Adobe Photoshop Elements includes a reverse field order preset for video imported from a hard disk or Flash memory camcorder that uses upper fields first. If your footage was captured with reverse order fields (upper fields first), make sure your project uses either the Standard or Widescreen preset from the Hard Disk, Flash Memory Camcorders presets folder. (See Create or change project presets.)
Ordinarily, interlacing isn’t apparent to a viewer. But because each field captures the subject at a slightly different moment in time, playing a clip in slow-motion, creating a freeze frame, or exporting a frame as a still image makes the two fields discernible. To avoid this, you can deinterlace the image. Deinterlacing eliminates one field and either duplicates or interpolates the lines of the remaining field.
Reversing the field dominance, the order in which the fields are recorded and displayed, may also cause playback problems. When the field dominance is reversed, motion appears jerky because the fields no longer appear in chronological order. Fields can become reversed when the field dominance of the original videotape is the opposite of the field dominance of either the video‑capture card used to capture the clip or the video‑editing or animation software that last rendered the clip. Reversing can also happen when you set an interlaced clip to play backward.
To avoid these complications, you can deinterlace the image. Deinterlacing eliminates one field and either duplicates or interpolates the lines of the remaining field. You can also set field options for an interlaced clip so that the clip’s picture and motion quality are preserved in situations such as changing the clip speed, exporting a filmstrip, playing a clip backward, or freezing a video frame.
Select a clip in the Timeline, and choose Clip > Video Options > Field Options.
Select Reverse Field Dominance to change the order in which the clip’s fields appear. This option is useful when the field dominance of the clip doesn’t match your equipment or when you play a clip backward.
For Processing Options, select one of the following choices, and click OK.
None
Does not process the clip’s fields.
Interlace Consecutive Frames
Converts pairs of consecutive progressive‑scan (noninterlaced) frames into interlaced fields. This option is useful for converting 60‑fps progressive‑scan animations into 30‑fps interlaced video because many animation applications don’t create interlaced frames.
Always Deinterlace
Converts interlaced fields into whole progressive‑scan frames. Adobe Premiere Elements deinterlaces by discarding one field and interpolating a new field based on the lines of the remaining field. It keeps the field specified in the Field Settings option in the Project Settings. If you specified No Fields, Adobe Premiere Elements keeps the upper field unless you selected Reverse Field Dominance, in which case it keeps the lower field. This option is useful when freezing a frame in the clip.
Flicker Removal
Prevents thin horizontal details in an image from flickering by slightly blurring the two fields together. An object as thin as one scan line flickers because it can appear only in every other field.
Good luck,
Hunt

Time stretch percentage is greyed out

I'm trying to adjust the speed of a clip using the time stretch tool, but when I click on time stretch, the percentage is greyed out and I'm not able to modify it. I'm using Premiere Elements 10. Is this not a feature of Premiere Elements and is only available in Premiere Pro?

Time Stretch, by the way, can not be applied to titles any more than it can be applied to stills. Because, technically, they don't have "time". They're still graphics (even if you've applied animations to them).
Extending the clip should very much slow down the animation. But I guess it depends on which animation you've applied.
Is it roll/crawl animation? Or is it one of the Text Animations in the Title workspace? Or is it from somewhere else?
If it's one of the Text Animations, try going back into the Title workspace (after you've lengthened the clip's duration), select the text block and remove the animation -- then re-apply the animation.

IMovie 11 quick time movie is in slow motion. why?

Sharing using Quick Time to make HD movie. Movie comes out in slow motion, but audio sounds okay. Followed online suggestions for settings. Settings are as follows: PLEASE HELP!

You don't say how the file was created for youtube. When you export a video from Flash you have a lot of options available to you. You can change the image area size, the frame rate, you can choose one of many video and audio compressors.
As a start, you should keep the image area and the frame rate the same for the video as it was in the original Flash file. When the Adobe Media Encoder opens, your file will show up in the Queue section with a compressor and a preset selected. You can select the format and change it to anything that you want. Since the default format has given you a poor result, select a different format or customize the existing one. There are many, many, options available. Take a look at the Media Encoder documentation for more information on those options.

Question about Slow Motion and Running Times

I am using iMovie '08 to help my boss make a video of the pump and suction cup assembly he has created. He asked me if I knew how to slow it down to a frame by frame type of shot. He also asked if there is any way to have a running time on the video both in real time and the slow motion shot. Can anyone help me?
At work I am using a Mac Pro with 4 G of RAM and 2x2.8 GHz Quad-Core Intel processor.

iMovie 08 was primarily designed for SIMPLE editing.
iMovie 06 is a free download to iLife 08 owners. (THEY WANT YOU TO HAVE IT!)
Much has been written about the differences between iMovie 06 and iMovie 08. I have found the below link to be helpful.
http://www.geethree.com/slick/imovie8.html

Slow motion and time measurement

Hi I have a problem and im wondering can someone here help me with it. Im trying to measure time in my .mov file. I wish to slow down the movie and measure time in the movie. Is there anyway of doing this. Im hoping to measure it quite accurately

Hi -
The short answer is yes, this is possible by using iMovie, Final Cut Express or Final Cut Pro to slow the movie down.
The problem is the precision of the time intervals displayed will be based on the original frame rate of the video - slowing the video down does not add temporal resolution, on the other hand, it demonstrates the relatively low temporal resolution of video at nominal rates of 30 fps - effectively 30 samples per second.
The only method you have of counting time between the start point of the action and the end point of the action is to count the frames that occur between those two points and divide them by the frame rate used to shoot the video. This might be easier to do with the movie running in slow motion, but it will not increase the accuracy - you just see the frames go by, each frame individually held for display in longer intervals.
There are high-speed cameras that shoot at 1000 fps available for rental which when you slowed down will allow you much greater precision in seeing action unfold in slow motion - but the rental charges can be staggering:
http://www.visionresearch.com/Products/High-Speed-Cameras/Phantom-HDGOLD/
Hope this helps.
MtD
Message was edited by: Meg The Dog to fix typo

How do I play slow motion video in real time?

I accidentally recorded video on my iPhone 5s in slow motion, and now I want to import it into iPhoto and play it in real-time. How can I do that?

Thank you for taking the time to contribute. Unfortunately, you are referring to the dekstop version of iMovie - my question specifies iMovie for iPhone (and I asked in the iMovie for iOS forum).
I would find it hard to believe that Apple included a way to record slow-motion but not be able to get that footage into iMove (iOS App version).
Thanks.

Create Slow Motion WIth A Timer?

I had asked in another forum if it was possible to have 2
different FPS's in a movie. And the answer was no. What i wanted to
do was have some slow motion parts in my movie. The same person who
answered said that it is possible with a timer. I have never used a
timer. And all the research i do on it comes up with Countdown
timers, and clocks, everything but what i would assume i need. Can
anyone help or clarify this for me?
I am making a sprite movie ( i know learn how to draw). I
think there fun. And mine are a bit more creative than most as far
as story and things in it. But there are some parts of the action
that i would like to slow down.
Let me know if you need anymore info.
Thanks.

I think WOWZA (
http://www.wowzamedia.com/)
has examples of it running
from their server. Not sure if the demo is online, but it
comes with the
server install. Developer versions are free. Maybe it'll give
you an
idea how.
Manno
eLearningDeveloper wrote:
> seeking clarification - it appears there is no such
thing as slow motion with
> FLV, though it can be sort-of emulated using a timer. Is
this correct?
>
> Looking at the AS3 specfication for netstream seek(),
and the discussion of
> so-called I-frames and P-frames, it would appear that,
with the correct
> settings on the server (EnhancedSeek), and video of a
certain quality (I-frames
> every 10 frames, with a high fps rate in the FLV) an
actual real slow motion
> could be attained.
>
> Are there any experts who know?
>

Slow motion / fast motion in Premiere Elements 13

I read that in Premiere Elements 13 fast motion (and I think also slow motion) ist removed. Is that correct. And if yes: Is there any workaround available?

rr
Thanks for the reply.
Great information. If you have been using Ctrl+R, that is the keyboard shortcut that brings up the Time Stretch dialog.
Time Stretch (use of the Ctrl+R) has not been removed from Premiere Elements 13 Expert workspace.
Like Premiere Elements 11, Time Stretch is found in the Expert workspace and not in the Quick workspace.
When you use the keyboard shortcut Ctrl+R, I get Time Stretch dialog from where I can create the slow or fast motion effect in the selected clip.
The following relates to Premiere Elements Timelapse Capture (Stop Motion) which has been removed from
Premiere Elements 13 as a specific feature that you see in Premiere Elements 11 and 12.
Adobe Premiere Elements 11 * Capture stop-motion and time-lapse video
Please let me know if you are OK with the above information.
Thank you.
ATR

Question about Camera/Premiere Settings for Slow Motion Video

I'm new to shooting video with cameras that have manual options, so I'm not exactly sure how I should set up the camera settings. It's a Canon 60D. Basically in the video I want to make, I'd like to have a lot of normal speed to slow motion transitions. Some of the video footage will be very fast paced, so I'd like to slow it down as much as possible without making the video appear jumpy. I assume I should change the frame rate on the camera to 60 fps. Is there anything else I should adjust within the settings?
I will be editing with premiere elements if you know of any additional tips for that.
Thank you in advance!

The speed of your camcorder doesn't matter. You can apply Time Stretch to any video clip.
There's a limit to how much you can slow it, of course. With that camera and Premiere Elements, you're not going to be able to slow down a water spray so you an see the individual droplets or anything like that. But, if you combine TimeStretch and Frame Blend, you should get very good results slowing your footage down a certain amount.
How much you can slow it and still be satisfied with the results is kind of a judgment call. So I encourage you to experiment and see what your tolerance is.

Tried to shoot 60 FPS for slow motion, but ...

I have a DVCPro HD clip, 720P, 59.94 frames per second. I was hoping to get a medium slow-motion effect in FCP. So I imported it and put it in a 23.97 frames per second sequence. It shows at regular speed. Hmmm...
I looked at the clip in the Viewer. I found a part of the action that lasts one second, and I counted 60 frames for that second. But in the Sequence, that same action shows only 24 frames.
Then I got a brilliant idea! I used Modify - Speed to slow it down to 40%. I hoped I would see all 60 frames of that one-second bit of action. But instead of showing all 60 frames, FCP uses only about 24 frames, and copies each frame once or twice to stretch out the action. So the action looks jumpy instead of smooth.
A friend last last month shot something with the Panasonic HVX200 at DVCProHD 59.54 FPS, and he got a smooth slow motion effect in FCP. But he moved out and isn't answering his phone.
Any suggestions would be greatly appreciated!

I owe everyone an apology, because I gave the wrong information about the video file. As you will recall, I was frustrated that it appeared to play at only 23.97 frames per second in Final Cut Pro, even though I thought I had shot it at 60 fps. Yesterday I discovered why it appeared to play at a different frame rate, but the reason was so bizarre, so unbelievable, that I began to doubt my own sanity.
Friends, the video clip changes frame rate in the middle! Yes, it does. You see, I had been looking at a portion of the shot with the lower frame rate; later in the same shot, the frame rate increased to 60 fps. You may ask, how is this possible? I do not know. I only know that I shot it with the little Sanyo HD1000 camcorder, which records as AVCHD (h.264), and the clip changed to a slower frame rate when the shot got darker, then back to 60 fps when the shot got brighter. Apparently the camcorder reacted to the lack of light by decreasing the frame rate, in order to have time to gather more light for each frame.

Slow Motion on Multiple Clips

Ok so I'm newish to Premier and starting to get frustrated by how slow it is to edit in this software. Surely there must be an easy way to make a whole sequence of clips run in slow motion at 50% speed. I've copied down the clips to the timeline but it seems I have to time remap on a clip by clip basis and moreover there's no easy way to stretch the new longer clip in the timeline without moving it first to its own track and then inserting it back into the original.
Please tell me there's an easy way to do this!!!!

Hi Craig - totally understand why you are a little confused as to why I'd want to apply a job lot action but as a wedding videographer, I end the film with a slow motion film sequence of their day. Although each clip does need fine tuning to fit both to the music and to the general feel of the clip as well as fine tuning the in and out points, I do generally use a 50% slow mo as a rule of thumb and work from there. If this facility was available I could then do all the work from the timeline to fine tune which would be so much faster.
I had a look at the frame rate interpretation and while this does allow me to make a multiple quick change in the way that using a nested sequence would also allow me to do the job, the same restriction seems to still be there, in the fact that any fine tuning of the clip thereafter would be either difficult, impossible or quality would be compromised.
I've got to say though - I am impressed with these forums, in less than 24 hours I have had three or four suggestions all of which may work in a different scenario which I may be able to use, so thank you very much again.

Does the duration of the video change after putting a slow motion effect?

Hi, I'm new with this After Effect software, and through researches and youtube videos, i learned how to make a slow motion clip, but i found a problem just after i was so happy to learn something new. Because I was so excited to try it out, i took a quick 3secs clip and edited it, after all the successful application of the slow motions, the clip suddenly stop without finishing the whole video, the duration of the clip remains 3 seconds after i applied the slow motion, i was hoping that the duration would go over 3 seconds because the slow motioned part was only at 5% the original speed.
So my question is, is the duration really supposed to stay the same after the slow motion is applied or should it expand finishing the whole video.? Then what should I do if the duration doesn't expand?
Pls give me a respond, thx.:))

Nah, that's just not how it works. AE will only extend layers if you use the native time-stretch/ time-remapping. If you use the Timewarp, you will have to pre-compose the source clip to a comp with longer duration and then apply the slow motion.
Mylenium

Slow motion Adobe Premere Elements

I am new
at this, and am not good with computers. After asking for a user friendly video editing program, the guy in the store handed me this Adobe Premere Elements program. I don't understand much of the lingo in this forum, and the tutorials are mumbo jumbo to me. Let's say that I am very challanged here.
I am able to make a simple video and add music, this I'm happy with. Now I want to add a short scene to a new video,and make that scene be in slow motion . I found the time stretch button to click on (it looks like a clock), but can't seem to get it to do anything. I drag the scene that I want to stretch, but it does not stretch.

The forum where you've posted this is for the picture-editing Photoshop Elements.
There is a separate forum for Photoshop Premier Elements you could have gotten to by using the dropdown list on the main forums jump page which isn't that obvious.
http://forums.adobe.com/community/premiere_elements

Time Stretch / Slow Motion Percentages

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