Ok I figured it out, copy the clip and snap it to the original then set the velocity to -100!
Thanks!

I couldn't, for the life of me, figure out what you were asking.

I thought you wanted to make a clip move around on the screen like a paddle in an old pong video game :-0

I think you want to have your video play forward and backward, which is called "having the video cha-cha" (just kidding). You can do this entirely with one clip with a velocity envelope applied. Positive numbers play forward, negative play backwards.

Gary

Ping Pong = reverse the video?

Wow.... now I would not ever have figured that one out. Sometimes it helps to be a detective to be able to figure out what someone is really asking for.

"Sometimes it helps to be a detective to be able to figure out what someone is really asking for. LV . . aint THAT the truth !

Tell you the truth, I've learnt a whole load in attempting - often failing - in trying to get my head around what people are asking . .only to be totally banjaxed by the "actual" answer they were given AND it was the answer they were after . . I sit back quietly and think ooohh yess .. .

I would just wish people asked for things in a straight way! Why aren't people as clear as I ? Hmmm... will somebody please answer me that one? Hmm Hmmm - makes soooo angry . . I could, I could, I could use . . .capital letters . ... < BIG wink> ;-)

Regards,

Grazie

Banjaxed?

Is that an Aussie-ism?

Brings to mind one of my favorite language-experiences: back in the Early Days of the Beatles, John Lennon put out a book called "A Spaniard In The Works". On the cover, he was dressed in a Zorro-like outfit. I found the title weird, but figured it was just a Lennon personal joke of some kind.
Many years later, when I began dating the AussieLady who is now my wife, she said of something that it "...really threw a spanner in the works."

BANG!!! An "unexploded pun" I had been mentally carrying around for years, suddenly went off...

earthrisers - Banjaxed? Is that an Aussie-ism?

Nah . . Bit more Irish than Aussie .. . check this out . . .:

http://pub122.ezboard.com/fwordoriginsorgfrm6.showMessage?topicID=266.topic

Grazie

Hehe! Well, at least the term drew you to look at what the thread is about! But really, I can't figure a way to ask the question proper in that wee topic space!

Ping-pong is a video term that has been around for years. I think since before "Daves Targa animator" (DOS, I'm old :-)), to describe the the frame flow of an animation that plays to the last frame and then seemlessly reverses play backwards to the first frame. I guess the term might be a little obscure because it's not done much.

Gary, I am not sure how you could do this with a single clip as the velocity envelope would seem to have to double back on itself. once at 100 then at -100.

The only way I have found to do this is render out the section I want, then load this clip, copy and paste it into another track, then set the velocity envelope on the second clip to -100. Then render the result.

It would be nice to do this and select the exact reversing frame points and then render only once. At least theres got to be a better way than I describe?

Thanks everyone for your input, and time!

It's quite easy to do with the velocity envelope. Set the envelope to run at +100% speed until you get to the point where you want it to reverse. Add a node there, and another one after it. Drag the second node so that it is directly beneath the first and set it to -100%. At that point, the video will begin playing backwards. Drag the right end out as far as needed (actually you can drag it out far enough for as many repetiions as you wish). Find the spot where you want the video to start playing forwards again, insert two nodes as before except that you will go from -100% to +100% this time. Etc.

Just What I was looking for! Thanks Chienworks!

Gary K, How do you do that on one clip, play reverse and backward with one velocity envelope using one clip?

cervana,

Have you tried it? It has been described here pretty well.

Don't try and wrap your mind around how the actual line of the velocity envelope looks on the timeline or your head will explode, but it does work.