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Help with speed change anyone?
HI there.
Another in my series of “I just don’t get how this works…” questions.
I want a clip which starts at 100% speed to drop down to 10% speed by the middle, then 0 by the end. I’ve tried going through the motion and time-remap tab, but it ain’t working!
Either a) The clip runs backwards very fast, or it pushes the entire edit along by 10 minutes as it extends the entire clip it was edited in from.
Even if it was just a straight drop from 100 – 10% what I though I’d be able to do is just have a keframe at the beginning, and a keyframe at the end. Set one to 100 and the other to 10, and it’d keep the clip the same duration as it has been set on the time-line – but uses a lot less footage (ie – the clip is up for 5 secs, but in reality, it only uses about 2 secs of the source).
The length of the clip is a bit of an additional question here – but still just as important. I need to go back into the sequence and put in these Timewarps – and every time I even breath on the keyboard the hint of a motion effect – all clips that follow it get shunted along by the time extension – throwing all the lip-sync for the music video out.
I hope I’ve given enough information here for someone to be able to help. God knows I need help… Every time I’ve looked into doing any kind of time manipulatoion , I’ve always found I can’t get it to do what I know it can.
Have a nice day.
John
John
Success is merely a failiure to imagine more…G5 2.7Ghz, 4.5Gb ram, Blackmagic Decklink/multibridge, 5.6Tb Infortrend storage, FCP Studio 5.02, Makie MCU control, Yahama 5.1 surround, JVC DTV multi-format monitor, 2x23inch Apple monitors – and a partirdge on a pear tree.
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2 Replies
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It sounds like you have two problems:
a) Taming the behavior of Time Remapping
b) Taming the behavior of Constant Speeda) ALL frames in a clip MUST be played back in Time Remapping, so get your mind wrapped around that. To tame the problem you are having, It is helpful to have a clip with a lot of extra handle on the tail end, so you can do the remapping with time remap keyframes, then just trim the area that “goes nuts”. I like to use the Speed Tool with the Keyframe Editor in the timeline fully expanded with Clip Keyframes to see what is going on in the Keyframe Editor’s Time Graph in the Timeline (NOT the Viewer). The feedback given by the Speed Tool’s tool tip is helpful to see as I adjust the time remap keyframe.
1. If you click and drag the speed tool left and right, the keyframe is constrained to move vertically, which spools through the available frames of the clip.
2. If you Option + drag the speed tool, the keyframe representing the frame you choose to an earlier or later place in real time.
Doing either will “remap” (either stretch or compress) the timing of the other frames that playback. Try to think of your clip as a “elastic” where if you slow down one area, the other MUST speed up. Use the Speed Tool with its tool tips and the time graph found within the keyframe editor on the timeline and NOT the time graph in the Motion Tab, where it’s harder to constrain horizontal and vertical movement of the time remap keyframe (which is NOT a normal keyframe by any means.).
b) Constant speed will mess with the position of other clips on the timeline, so you’ve actually got to do the speed change in the Viewer.
1. Apple + Option + F to load a copy of the clip into the Viewer
2. CMD + J to do the constant speed effect.
3. Replace Edit the speed affected clip back into the timeline.With that method, the position of the surrounding clips won’t change.
Suggest you get my book for a deeper explanation of these FX. I have a whole chapter which delves into these topics. Other resources include an article on my website. There is also one on kenstone.net.
Kevin Monahan
Take My FCP Master’s Seminar!
fcpworld.com -
Wow – thanks for that. A lot of info to take in I guess, but I’ll try it out. I’ll take a look at your book too.
Thanks again.
John
John
Success is merely a failiure to imagine more…G5 2.7Ghz, 4.5Gb ram, Blackmagic Decklink/multibridge, 5.6Tb Infortrend storage, FCP Studio 5.02, Makie MCU control, Yahama 5.1 surround, JVC DTV multi-format monitor, 2x23inch Apple monitors – and a partirdge on a pear tree.
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