Comments

jaegersing wrote on 10/6/2004, 5:21 PM
Hi Thomas. I normally just leave this set to whatever the default is, and the results are very good.

Sometimes there is some variation, depending on the movement in the video and the exact scale factor, i.e. how much you slow down the clip. If you have doubts whether you are using the best settings for a particular case, I suggest you render a short section with and without resampling enabled. Then you can do a comparison and see for yourself which one is better.

If your video is normal interlaced DV, remember to use a TV monitor to view the results, because you won't get the true story from a PC monitor.

Richard Hunter
johnmeyer wrote on 10/6/2004, 8:26 PM
Earlier versions of Vegas (before 4.0) required you to set it. From 4.0 onward, Vegas has "Smart Resample" as the default, and this feature automatically forces resampling when the playback rate is slowed.

Here's some more info on settings for slow motion:

Slow Motion Quality

Most people want to create slow motion like they see on sports programs. Unfortunately, that quality cannot be duplicated because commercial cameras used for sports take far more than 30 frames per second. To create slow motion when Vegas only has 30 fps to start with (or 25 fps for PAL), it must create new frames of video to fill in the time between each original frame of video. Vegas does this by blending the adjacent frames. The result gives the illusion of fairly smooth slow motion, although, because the intermediate frames are the combination of adjacent frames, they are somewhat fuzzy. Thus, you can get smooth, but slightly blurry video.

If you want crystal sharp slow motion, you can right-click on the video event that has been slowed down, select “Properties,” and then click on the “Disable Resample” setting. This will tell Vegas to simply play back the original frames, but at a much slower rate. The effect is identical to what you get when you slow down a movie projector. As you make the playback slower and slower, you begin to see just a series of still images, one after another. Each frame is exactly as sharp as the original, but it gets very “jerky” as the motion is slowed.

For most slow motion situations, you should not change the default resample setting (which is "Smart Resample").

There has been much discussion of other settings, such as supersampling, best mode rendering, and setting project properties to “interpolate frames” instead of “blend fields.” These don’t make the motion look any smoother. If you find that your slow motion exhibits flicker, you can enable the Video Bus track (in the View menu), add a Motion Blur envelope, and set it to somewhere between 2-4. You can also try right-clicking on the event, select Properties, and click on reduce interlace flicker. Don’t do either of these things if you don’t have to, because they both can slightly degrade the video’s crispness, and Motion Blur substantially increases rendering time.