Comments

farss wrote on 4/30/2010, 1:29 AM
I suspect the motion blur is from Vegas interpolating (blending) frames.
Best method is to change the playback rate and the method I have always used in the one recommended by the guys who write Vegas.
Set your project frame rate to match the frame rate your video was shot at, in this case 60fps. Set your ruler to absolute frames and take note of the length of your video in exact frames.
Now change your project frame rate to what you want it to playback at. Use Ctl + Drag to drag the end of your video so it is the exact same number of frames as before. Render out at the project frame rate, job done.

Note that at 24fps some motion blur can be a very good thing to avoid judder however in your YouTube video the amount of MB varies and there is variable motion judder as 24 does not divide into 60 so there's 'harmonics' in the motion rendition. The technique I outlined above will avoid this.

For YouTube uploads I use the Sony AVC codec, 720p at 8Mbps.

Bob.
Jeff_Smith wrote on 4/30/2010, 12:30 PM
Bob, thanks for the suggestions. I tried your suggestion, used the sony avc internet 16:9 30p 1280x720 29.970 fps template, modified to 8Mbs. Motion blur looks about the same to me. Would super sampling help? Here is the result:


Andy_L wrote on 4/30/2010, 12:56 PM
Have you tried disabling resampling in clip properties?
Jeff_Smith wrote on 4/30/2010, 1:09 PM
I had not, I just re-rendered it, I would say it looks a bit better when I freeze on a blurry frame, but not very noticeable during playback. I will upload that to YT, thanks.
farss wrote on 4/30/2010, 3:22 PM
That looks much better to me, the judder / cogging of the motion has gone and theMB looks reduced.
Using this technique Vegas will not resample as it's rendering frames one to one. Supersampling ONLY works for motion created by Vegas, period!
At the end of the day 60fps is not fast, no different really to shooting 60i, the temporal resolution is the same. The slomo of sports and general natural movement 150fps is the minimum for usable slomo. 60fps is OK for overcranking i.e. just making things look slower rather than anything ocertly "slow".
What you need to do is look at the original footage frame by frame, the amount of MB depends on the shutter speed of the camera and how fast something is moving. A typical shutter setting of 180 deg at 60fps gives a shutter speed of 1/120th of a second which not a fast shutter at all. If you want to eliminate all MB increase your camera's shutter speed, assuming it lets you control it. For subjects that I know I'll be doing things like deshaking I'd go to 1/250 to 1/500th shutter speeds and even then will still get MB if something moves fast enough or you shake the camera.

There is a way to attempt to get slow motion without using a high speed camera but you need something like After Effects to do pixel by pixel tracking. Huge render times and the process is not foolproof. Probably would work OK for your dogs. Example here:

http://www.vimeo.com/2866915


That was shot at 60fps then slowed to 1/4 of that speed. Here it works OK.
Example of how it can go wrong when really pushed:




Bob.
FrigidNDEditing wrote on 4/30/2010, 5:46 PM
I just hit properties on the piece of media I'm using, and set playback rate to .5 if I'm working in 29.97 project or .4 of I'm working in 23.976. Then I slip the clip and trim as desired.

Dave
Jeff_Smith wrote on 4/30/2010, 6:53 PM
hey dave, I figured that was doing the same thing as ctl drag, and it is faster and accurate. I noticed that using bob's suggestion that not only did vegas render a lot faster, but youtube processed to an HD version much faster. I am not at my camera, but I don't think I can adjust shutter speed, maybe shooting at a sports scene mode for video to be slowed down in vegas? Thanks everyone for the feedback.
Jeff