-
Velocity Envelope duration
I’ve looked at a lot of posts regarding Velocity Envelopes but I don’t understand how it works. In Vegas help it states:
“Each video event in your project has a specific duration that is not changed by velocity envelopes. Therefore, if you decrease the speed of a ten-second video event by 50%, only five seconds of video will be shown. On the other hand, if the speed is increased 200%, the ten seconds of video will play in only five seconds. The remaining five seconds of the event will be filled either with a freeze of the last frame or with ten additional seconds of video content from the media file.I want to slow mo the entire clip but when I apply the velocity envelop, the duration of the clip, as it states above, does not change. When you slow mo a clip, it should get longer on the timeline. (Rex RT did this easily…)
How do you slow mo the entire clip?Thanks in advance.
-
13 Replies
-
Unfortunately Vegas doesn’t do things like your old NLE.
When you apply a velocity envelope, nothing on the timeline changes as Vegas expects you to know what to do.
If you speed an event up and do nothing, the event will be repeated one or more times.
If you slow a clip down and hit play, you’ll only get a portion of the event.
What you need to do is to stretch or shorten the event (depending on what you did) until you see a tiny little V at the top of the timeline.
That means that you’re at the end of the event.
If you go too far, go back until you’re right on the V.
In the screenshot below, I went past the end of the event so I’d have to drag it backwards.
-
OK, got it. The little “V” is very hard to see but easier when I enlarged the time line and knew what to look for.
Thanks Mike! -
You’re welcome Diane. Always glad to help.
-
Diane,
I had the same question and was just hours away from asking the same thing.
Thanks for asking.
Mac
-
I use the Velocity Envelope in conjunction with clip time compression to get the maximum speed up of 12x. First grab the right side of the clip and hold ctrl while you drag left. That will give you the max of 4x. Then add velocity envelope, move the slider up to the top. Go slow and watch for the little “v”s. When done you will have three Vs.
Here’s an important step. Find the left-most V, and expand the view until you can see each frame. As you move the selection point from the left of the v past to the right, the scene will jump from the end to the start! Split the clip and throw away everything to the right. You can now render the clip to a lossless format which you can use later.
Steve
Win7 Pro X64 on Dell T3400, MultiTB SATA, 8GB RAM Vegas 10e x64 DVDA 5.2(build 133) Sony HDR-CX550V
-
[Stephen Crye] “You can now render the clip to a lossless format which you can use later.”
The other thing you can do is to save it as a veg file and import it as needed.
No render time required 🙂 -
[Mike]”The other thing you can do is to save it as a veg file and import it as needed. No render time required :)”
Good point, Mike.
I should have clarified the reason I typically render the clip at that point, is that when I re-use it, I might end up squeezing (or stretching) it again, in order to get it to match up to a transition in a music track. So, if I want to squeeze it again by a factor of four (for a net time-compression of x48), I need a loss-less intermediate clip.
An example here (please excuse the blurriness in the vid, I foolishly had my project set to 1280×720 while rendering the intermediate clips to 1920×1080 – duh. At least I learned what NOT to do!)
https://www.youtube.com/watch?v=ZnD1Ev6kZlM
Steve
Win7 Pro X64 on Dell T3400, MultiTB SATA, 8GB RAM Vegas 10e x64 DVDA 5.2(build 133) Sony HDR-CX550V
Some contents or functionalities here are not available due to your cookie preferences!This happens because the functionality/content marked as “Google Youtube” uses cookies that you choosed to keep disabled. In order to view this content or use this functionality, please enable cookies: click here to open your cookie preferences.
-
Steve, you treat the imported veg file just like a loss-less intermediate (i.e. shorten or drag it as desired) so there’s no need to render to any format.
-
Steve,
Great example velocity envelope synchronized with music and your video is really beautiful! I watched at 360p, small screen so I didn’t notice any blurriness. Very impressive footage with such a small camera. I couldn’t help wondering toward the end how you kept the lens from fogging when you seemed to be right in the clouds. -
Hi Mike;
I’m confused. If I have already squeezed it by 12x, how can I squeeze it more if I don’t render it to an intermediate? If I grab the edge and try to shorten it, Vegas will not let me.
And, with a bunch of “raw” 12x squeezed clips in the timeline, rendering a long project is suuuuper slow.
I guess I am missing something. Want to learn!
Steve
Win7 Pro X64 on Dell T3400, MultiTB SATA, 8GB RAM Vegas 10e x64 DVDA 5.2(build 133) Sony HDR-CX550V
Reply to this Discussion! Login or Sign Up