They're here! More Muvipix.com Guides by Steve Grisetti!
The Muvipix.com Guides to Premiere & Photoshop Elements 2024
As well as The Muvipix.com Guide to CyberLink PowerDirector 21
Because there are stories to tell
muvipix.com

Scrub vs Shuttle

Specific to Premiere Elements version 14

Scrub vs Shuttle

Postby mikecox » Sun Apr 10, 2016 1:06 am

I was checking "keyboard customization" and noted that J and L are supposed to "Shuttle" left and right, and holding Shift is supposed to slow the action, but it doesn't seem to have any effect when I try it.

I'm trying to figure out what advantage L and J have over the left/right arrow keys where adding the shift key speeds things up but the arrows alone move the CTI slower.

Is "shuttle" aka "Scrub"?

btw I have found that the Shift arrow key combination doesn't always work. There are time when Shift-arrow speeds things but, more often than not, the Shift key doesn't effect the speed. :mad:
Michael :cool:
Pr Pro, Ps and Lr CC, Canon Cameras: 60D and 70D
WIN10 Pro, Surface Book,
i7-6600U CPU@2.6GHz 2.81, 16GB RAM,475 GB SSD, 211 Free
Intel HD Graphics 520, NVIDIA GeForce GPU
User avatar
mikecox
Frequent Contributor
Frequent Contributor
 
Posts: 209
Joined: Wed Dec 23, 2009 12:02 pm
Location: San Diego

Re: Scrub vs Shuttle

Postby Bob » Sun Apr 10, 2016 4:03 am

The J and L keys do something entirely different than the left and right arrow keys. They aren't the same thing at all.

The left and right arrow keys are "jog" controls. Press the right arrow key and the CTI moves 1 and only 1 frame to the right. Add the shift key modifier and the right arrow key moves 5 frames to the right. The movement you see when you hold the down the arrow key has nothing to do with Premiere Elements. What you are seeing is the keyboard repeat key function built into the operating system. When you press and hold a key, there is a pause before the repeat function kicks in and then the key repeats until you release the key. The pause and the repeat rate are settings that you can adjust in the keyboard properties of the OS. You see the cti move because the OS is repeatedly sending the key press to the application. It's the same as if you kept pressing the arrow key over and over.

The J and L keys, on the other hand, are shuttle controls. They don't just move the cti one frame, they initiate playback of the timeline. This is not the same as "Play". You can play forwards (L) or reverse (J). And, you can change the playback speed. Each time you press the shuttle key, the playback speed will increase. Sometimes, you need to play back at less than real time. Adding the shift modifier to the first shuttle key press will begin playback at 1/10 speed.

Scrubbing is a click and drag technique. Click on the cti playhead and drag left or right to quickly scrub left or right in the timeline. The monitor will attempt to display what's under the cti, but it will drop frames if the system can't keep up with the movement. It's not the same as playback.

Jogging is good when you only need to move the cti a relatively short distance for precision movements. For example, when you are precisely determining the exact location of a cut. The shuttle is good when you want to review a short section of video to assess your work at that point -- For example, how well do the cuts work, are the key frames working as intended, etc..
User avatar
Bob
Moderator
Moderator
 
Posts: 5925
Joined: Wed Feb 21, 2007 4:49 am
Location: Southern California, USA

Re: Scrub vs Shuttle

Postby mikecox » Sun Apr 10, 2016 4:14 pm

Bob wrote:The J and L keys do something entirely different than the left and right arrow keys. They aren't the same thing at all.

The left and right arrow keys are "jog" controls. Press the right arrow key and the CTI moves 1 and only 1 frame to the right. Add the shift key modifier and the right arrow key moves 5 frames to the right. The movement you see when you hold the down the arrow key has nothing to do with Premiere Elements. What you are seeing is the keyboard repeat key function built into the operating system. When you press and hold a key, there is a pause before the repeat function kicks in and then the key repeats until you release the key. The pause and the repeat rate are settings that you can adjust in the keyboard properties of the OS. You see the cti move because the OS is repeatedly sending the key press to the application. It's the same as if you kept pressing the arrow key over and over.

The J and L keys, on the other hand, are shuttle controls. They don't just move the cti one frame, they initiate playback of the timeline. This is not the same as "Play". You can play forwards (L) or reverse (J). And, you can change the playback speed. Each time you press the shuttle key, the playback speed will increase. Sometimes, you need to play back at less than real time. Adding the shift modifier to the first shuttle key press will begin playback at 1/10 speed.

Scrubbing is a click and drag technique. Click on the cti playhead and drag left or right to quickly scrub left or right in the timeline. The monitor will attempt to display what's under the cti, but it will drop frames if the system can't keep up with the movement. It's not the same as playback.

Jogging is good when you only need to move the cti a relatively short distance for precision movements. For example, when you are precisely determining the exact location of a cut. The shuttle is good when you want to review a short section of video to assess your work at that point -- For example, how well do the cuts work, are the key frames working as intended, etc..
That's what I would call a truly "definitive answer", thanks so much. It's all very clear now. :TU:
Michael :cool:
Pr Pro, Ps and Lr CC, Canon Cameras: 60D and 70D
WIN10 Pro, Surface Book,
i7-6600U CPU@2.6GHz 2.81, 16GB RAM,475 GB SSD, 211 Free
Intel HD Graphics 520, NVIDIA GeForce GPU
User avatar
mikecox
Frequent Contributor
Frequent Contributor
 
Posts: 209
Joined: Wed Dec 23, 2009 12:02 pm
Location: San Diego


Return to PRE Version 14 


Similar topics


Who is online

Users browsing this forum: No registered users and 4 guests

cron