Velocity Envelopes

lgh529 wrote on 6/15/2005, 1:08 AM

I think there is something that I'm missing about using velocity envelopes. The problem that I am always running into is that I am guessing how long the clip needs to be after I reduce playback speed.

For example, I was editing a video of my son playing soccer. I split one event so that as he kicked the ball, the clip ends with the ball almost off the screen. I then put in a velocity envelpe to reduce the playback to about 50% for the last few seconds, then move the rate to 0% just as the ball has been kicked, leaving a still frame with the ball in midair. Understand? The problem is that when I reduce playback to 50%, the clip becomes longer, so getting the right ending point is trial and error.

So I guess what I'm asking is this: Can you define the end of the clip where you want a still frame, and then adjust playback prior to that point without changing the end?

Comments

jaegersing wrote on 6/15/2005, 3:45 AM

If you right-click on the clip after splitting, you can "create subclip". Apply the velocity envelope to the subclip and see if this does what you want.

Richard Hunter

Grazie wrote on 6/15/2005, 4:07 AM

( as sung to the tune of same name -Supremes: er . .. 1965? )

"STOP ! . . . in the name of love?!"

Try this SPLENDIFORUS method too! Dead easy and lodsa control too!

http://www.sonymediasoftware.com/forums/ShowMessage.asp?MessageID=331809&Replies=12&Page=0

Have fun!

Grazie

Richard, nice one .. but do have a look at the thread ..

GG wrote on 6/15/2005, 1:26 PM

lgh529,

It's very easy in Vegas. You don't need to do any splits or renders. Place your clip on the timeline trimmed for the start of acrion. Apply the Velocity Envelope to the event and drag the cursor to find the area where you want the video to slow down and freeze. Add two nodes (keyframes) in the area on the green Velocity Envelope line by double clicking for each one. Right click on the second node and use "Set To" from the pop up menu and enter zero which makes the freeze frame from that point on to the end of the event. Now use Alt along with dragging for those two nodes, one at a time, to fine tune when you want it to slow down and precisely freeze. After that, you can easily drag the right edge of the event out to the right to extend that freeze frame for as long as you need it.

After you do it once and know the procedure, it is very easy. And you can cahnge it as needed at anytime without any extra setup work or rendering.

I have a tutorial on Velocity Envelopes I wrote a long time ago that still applies to all versions of Vegas. I gave all my tutorials and veg files to Spot to use on his VASST website.

Have fun,
GG

lgh529 wrote on 6/15/2005, 8:03 PM

Thanks for all the suggestions.

GG's method was exactly what I was looking for.

kkolbo wrote on 6/15/2005, 8:23 PM

Gary,

I have been using Vegas for so long and I use the envelopes all of the time. I had never caught the set to... in the right click. Thanks! It just goes to show that you can never learn it all.