Slow motion: stretching clip vs. velocity envelope

[GHKAM]

I shot 60p HD footage @ 125 shutter, placed in a 30p Vegas timeline/disabled resample on the clip.

If I stretch the clip using the mouse it looks pretty good.

If, instead of stretch I change the clip playback rate to slow it down, the clip becomes incomplete and the part I want to make slow-mo is then inaccessible. If I record a 60p clip while purposefully adding a couple minutes of record time before and after the event to be slow-mo'd, it still won't let me get to the part/whether changing playback rate or using a velocity envelope.

My questions are:
1) Is the stretch method comparable quality and should I even be bothering with the velocity for (just) slow-mo?
2) If velocity is worth it, why is it making parts of the clip inaccessible and is there a fix?

Thanks.

 

[clang]

When you change the playback rate, Vegas _doesn't_ move the end point on the time line, even though the effective length of the clip as changed. So you should then be able to move the clip's end point to show the bits you want.

 

[GHKAM]

When you change the playback rate, Vegas _doesn't_ move the end point on the time line, even though the effective length of the clip as changed. So you should then be able to move the clip's end point to show the bits you want.

Thanks a lot for that, it worked. I changed the playback rate to .25 and then just dragged the clip out/without holding down ctrl...and was able to edit as needed.

I just ran some tests and see that stretching the clip (mouse+ctrl) actually seems to have less motion blur/looks better than adjusting the playback rate. I'm not sure if one is technically supposed to be better than the other, but I think I will stay with the stretch method.

Thanks again, much appreciated.

 

[deltoidjohn]

With 60p footage, anything slower than 50% (on a 30p timeline) or 40% (on a 24p timeline) will give you either stuttering or blended frames.

This might be ok for some needs but personally I'd recommend to never go slower than the original frame rate allows when conformed to the timeline frame rate, with either method.