What are you trying to achieve?

i can do it fine using sf but i want to do it in time with the video velocity envelope, does this just mean skills int matching audio with video or is there a way i can lock them together?

Just a try: you can't render the video file as you wish it to be then import rendered file in Sound Forge to synch sound on it ?

Im trying to acheive this type of effect: http://www.snowpics.net/media/re-calum.mov

It looks to me as if that clip does not have the sound and video on the same velocity curve. The video slows and then stays at a constant slow rate while the sound continues to get slower and then both spring back to full speed.

As others have said, if you have Sound Forge just process the audio with pitch bend and be done with it. If you need the video as a reference, render just that section of video with the velocity envelope applied and bring it into Sound Forge. You should be able to get a very accurate and convincing slowdown.

~jr

JR, I agree.

There is also a subtle "underwater" "submarine" kinda water in the ear effect. Maybe from slowdown audio .. but I would be tempted to get "nasty" with SF or play with the Vegas non realtime FXs - betcha there will be an effect that you could play around with. Make it Key framabel within Vegas and you've got your audio FX keyed to the slowed down motion. Now I understand! Intersting project though .. interesting!

Who ever said video/film was about reality anyway?

Grazie

whilst previewing the 'sound envelope' in sf i cannot see a preview window for video?

I can get the video streaming along the top . . .which SF you got? You need to allow SF to "see" it through the Video Device setup - bit like Vegas? - G

Sound Forge 7.0

Me too! - You should be seeing video too? - G

Grazie, correct! But, that's only in the main timeline window. When you bring up Effects / Pitch / Bend, all you see is the audio waveform. There's no way to tweak while watching the video play along with.