Vegas Video discussions from 2004 (Q3Q4)

[Simon Wyndham]

Actually I've noticed this phenomenon today working with 25fps PAL footage. I had to turn off Quantise to frames to be able to line everything up again.

[Glen Elliott]

Are you sure that cut is placed exactly on the end of the previous frame- do you have quantize to frames enabled?

[Barry Schmetter]

Michael,

I'm not clear on your exact problem--are you losing sync between your audio and video tracks--is it gradual drift out of sync or just a constant shift? Or is it that both the audio and video shift on the timeline as you edit? In any case, you can right click on events and lock them so they don't shift--regardless of additional edits.

[Marcia Janine Galles]

What settings are best for Vegas, when scanning in old photos (resolution, bit depth, etc.)? I've seen mention on this board of the "Ken Burns" effect and Edward's nifty script (on my "to buy" list), but not any discussion of optimal scanner settings to get the pictures into the PC in the first place.

Anyone?

[Edward Troxel]

Marcia, I just scan everything at 300 dpi at whatever size the image actually is. Once you add it to the timeline, open Pan/Crop, right-click the image on the Pan/Crop screen, and choose "Match Output Aspect" (there's a script that will do this to a bunch of images at once). Then you can adjust the Pan/Crop settings as desired to create the movement. The PBS Wizard is great if you want to add movement to a LOT of images quickly.

[Michael Best]

It's not due to any drifting, what I'm saying is that the audio
is not edited, the video is so it is slowing in the preview window
as more editing is done. When you watch playback it gets more
and more out of sync (because it has not been rendered yet).
This is really a function of computer speed but I need to be able
to watch accurately what I've edited from a timing stand point.

[Michael Morlan]

John, the footage was captured with the Vegas 5 VidCap program from a MiniDV tape. Some of the clips have been processed through deinterlace and sharpening digital intermediates, all with Vegas.

Glen, the sample I showed is end of the first cut of the timeline.

The thing of note, here, is that the symptom consistently appears on .veg projects that have been "used" but not within brand new .veg projects. I'm not sure of the amount of "use" that results in the symptom.

Michael

[Marcia Janine Galles]

Thanks Edward! I'd better take a moment and go grab a couple of your plug-ins now, while I'm thinking about it. I'm a bit distracted these days. I go to sleep, wake up, even dream about what I'm editing...

Marcia

[Andre De Clercq]

I am not familiar with Vegas details, but does this not relate to the drop frame concept? A 29,...fps frame period is somewhat longer than a 30 fps frame duration. The timecode allways counts in 30 frame units. In order to make this framecounter representative for the real time (duration) it now and then drops a timecode number (not a frame!). If yr Vegas outputs (renders) and inserts a new 30fps timecode you will get the difference between the framenumber and the timeline if you enter that rendered footage again and the timeline is set for 29,...fps

[Simon Wyndham]

I don't think this is a drop frame thing as mine does it with PAL footage.

[Michael Morlan]

Note, too, what I wrote about the cursor and markers/regions. They also end up snapping off-frame along with the video clip.

Why would they be affected by an off-frame length of a video clip?

[Randall Campbell]

Michael,

Vegas Preview goes as fast as it can on your computer, but as you add more video effects, etc. it will not be in real time and you will see the actual frame rate (in red at the bottom of the preview window after Display:) slow down. There are a few things that you can do to get a real time preview:

1. Use Draft preview mode. This will speed things up, but will result is a loss of quality.

2. Prerender to disk using Tools/Selectively Prerender Video (Shift-M).

3. Prerender to RAM using Tools/Build Dynamic RAM preview (Shift-B). To use this option, you need to set a RAM buffer via Options/Preferences/Video tab, set the Dynamic RAM preview buffer to as big of a value as you can.

If you use option 3, the amount of time that you can prerender is based upon the amount of RAM that you allocate. This is the fastest option for testing short sections of video.

If you need a longer section, then option 2 is the best bet. It will prerender to disk.

Obviously the faster the computer and especially the hard disk, the more effects you can add before the preview frame rate slows down.

Randall

[Charley Gallagher]

Thanks, Ed. Sorry for the delay with the reply. It was unavoidable however you did solve my problem with your reply. I just dropped the files in media player and of of many that were loading was corrupted and therefor the .veg file didn't work.

Now I am back dealing with just why my files get corrupted.

In any event, it was great to know the .veg files are all intackt.

[Michael Best]

Thanks for the info, kinda what I was thinking, can prerendered
stuff be edited though? I want to render a piece to see it but
be able to 'leave it be' in the timeline for additional editing.

Thanks so much

[Edward Troxel]

If you PRE-RENDER, yes, you can still edit just fine. As soon as you make a change in that area the pre-render will simply be discarded.

If you RENDER TO NEW TRACK, you can still edit that section, you just have to manually delete the rendered video from the upper tracks.