Interpolating fields for slow motion effect

Avene wrote on 2/9/2005, 5:14 PM
Does anybody know how or if this can be done in Vegas 5? Basically you take some normal interlaced video, set it to interpolate fields and then it should playback at half the speed with each of the 2 separate fields appearing as a separate frame. Well, that's how it's done in other programs like Commotion and After Effects. Of course I'd rather be able to do this in Vegas to save trouble rerendering files.

Now deinterlacing in Vegas has an 'interpolate fields' option. Unfortunately this doesn't work at half speed it appears. At half speed, I still see the same field every 2 frames.

Any info on whether or not this can be done would be much appreciated. Otherwise, I guess I better start converting a whole load of clips in Commotion and then making a new feature request on this website.

Comments

taliesin wrote on 2/10/2005, 12:12 AM
It is a great Vegas feature that it produces VERY smooth playback when using a slomo which is done by creating new interpolated frames which keeps the field structure. What some other NLE do when creation slomos - throwing the fields away - is just a quick and dirty way. Vegas behaviour by keeping the fields is superiour to most other NLEs slomos and something Vegas users highly appreciate.

Deinterlacing is quite another feature - independent from slomos.
If you wanna get rid of the field structure in Vegas - slomo or not - you have to separately render to deinterlaced video by choosing "Field order: None (progressive scan)" in the render settings. Interpolating or Blending must be chosen in the project properties for the render process.

Marco
Avene wrote on 2/10/2005, 1:00 AM
It's ok, I've figured it out and it does work after all. The playback rate of the clip needs to be set to 0.5 by right clicking on it in the properties. The reason I didn't think that it worked was because when I'd highlight individual frames on the timeline, there'd be 2 the same and the next 2 the same and so one. Where as each should have shown a different field per frame. But it DOES work when you render it out. I did this, played back the footage and every frame DID display a different field. Why they're not visible from the timeline I don't know.

Although I must say, the quality in Vegas when you do this is not quite as good as Commotion with it's bicubic antialiasing.