Comments

FadeToBlack wrote on 10/24/2002, 3:06 AM
jerryd wrote on 10/24/2002, 5:15 AM
Why should it be left on for editing?
Thomas wrote on 10/24/2002, 5:26 AM
Hi there,
I cut a really nice video along the rythmn of a piece of music. To get the beats exactly, I disabled quantize to frames. This looked fine in preview, but after rendering and watching on the tv set, there was a lot of jerkyness. I have redone the whole project with quantize to frames enabled. The offset between the beats and the frame borders aren't significant and eventually the final render looked best on tv.
Regards,
Thomas
Chienworks wrote on 10/24/2002, 10:00 AM
Quantizing to frames assures that all your video edits will have the frames in the source videos starting at frame boundries on the timeline. This can help prevent lots of problems such as jerkiness in renders (allthough it ain't supposed to matter; Vegas is suppose to be smart enough to deal with it). If you need to adjust A/V sync at sub-frame levels, turn off quantizing and then move the audio track, not the video track. Then turn quantizing back on.
wcoxe1 wrote on 10/24/2002, 10:22 AM
Cool. Thanks, guys. You just saved me a lot of time, again.
Erk wrote on 10/24/2002, 10:55 AM
I'm curious, when would it be useful to edit video without "quantize to frames"? Perhaps when working with interlaced -?

G
Tyler.Durden wrote on 10/24/2002, 12:45 PM
Sub-frame edits are regularly used in audio editing, where events occur in the millisecond domain.

BTW, Interlace is one of the main reasons to *use* Quantize-to-frames... is is the mismatch of fields at edits that can cause jitters and jerks. Quantize helps ensure that each frame of video starts on field-one.

HTH, MPH

SonyDennis wrote on 10/24/2002, 3:40 PM
Marty, QTF should have no bearing on how interlaced footage is handled. It's impossible to slip interlaced footage half a frame (one field) and have Vegas get confused. If you're seeing jitter or other artifacts, I'd like to see the project.
///d@
jerryd wrote on 10/25/2002, 6:28 AM
If I have already edited a project with QTF off, would it be beneficial to turn it on before rendering or printing to tape?
Tyler.Durden wrote on 10/25/2002, 7:20 AM
Jerry, I believe QTF might only effect editing/placement, not rendering or PTT.


DM,

>>>>"If you're seeing jitter or other artifacts, I'd like to see the project."<<<

I haven't run a test on my problem footage since my upgrade to 3.0c... I'll look into it again and check back.

Thanks, MPH

SonyEPM wrote on 10/25/2002, 8:36 AM
1) For video projects, you are advised to keep QTF on at all times.

2)Turning QTF on will not "fix" (re-quantize) events that are already on the timeline, unless you move them.

3)For audio-only projects, you can turn it off.