rerendering after small change

DWALLYN wrote on 8/16/2004, 2:23 PM
I have just finished a 110 minute wedding DVD. I rendered it to an avi file, and watched it on windows media. Saw I needed to make a small change on the audio (too loud in one part), do I have to render the whole file again. It took over 3 hours to render on a 3.08 P4 computer. Is there a way to only render the changed portion?

Comments

jetdv wrote on 8/16/2004, 2:25 PM
Place the entire rendered file on the timeline ABOVE your current tracks. Just create a new video track on top and add only the video to that track. Now, cut out the small section that needs to be modified from the new track. Only that one small section will be re-rendered - the rest will be copied if you do a full render.
DWALLYN wrote on 8/16/2004, 2:30 PM
I don't know if I understand you. I have the veg file opened that needs changing right. Then I insert a video track above the top track. I then import the rendered avi file into the new track. Then what?
Liam_Vegas wrote on 8/16/2004, 3:00 PM
Hmm.. well if you follow what was told to you... you will have your problems fixed. It sounds like you don;t quite understand what is being asked.

Here goes.

Have you put the rendered video onto a track above your existing tracks? Yes? When you have done that the rendered video will be the "active" video track and everything below it will be ignored. Do you get that bit?

Now you want to make a change to just a very small section of the video right? So you go to the part of the video that contains the bit you want to change.. You make a time-line selection of JUST that part of the rendered video (the top track) and you delete JUST that bit. The result is that now your existing timeline and all those tracks will be active within that small section.

You can then make your change and when you re-render you will find that all the unchaged stuff will simply be duplicated into a new AVI file (it will not take any time to re-render those bits because nothing is changing) along with the tiny bit that you have altered.

I don't know how else to describe this. It is pretty easy once you understand what is going on.
JasonMurray wrote on 8/16/2004, 5:10 PM
All good techniques guys (wish I'd thought of them the other day when I'd forgotten to add a title to one area of a 2 hour video :)), but he's looking to change *AUDIO*, not *VIDEO* ............
musman wrote on 8/16/2004, 5:27 PM
I'm a little confused. Couldn't you just render the whole veg file and when the rendering options come up, chose the video tab, deselect the "Include video" box, and then render as normal?
As it's just audio, it shouldn't take very long, and unless I'm wrong- everything should stay in sync.
jetdv wrote on 8/16/2004, 6:57 PM
Missed the "audio" part. What I said before will still work. However, an alternate solution would be to just change the audio as needed and render to a new WAV file. Then start a new project using the rendered AVI video (ignore the audio portion) and then add that new WAV file.

There are LOTS of approaches that could be taken for this. This is but two of them.
apit34356 wrote on 8/16/2004, 9:10 PM
Dwallyn, are you going to use the AVi for DVD rendering, if so, just load the AVI file into vegas as a new project. Put an audio envelope on the audio track, add points for volume adjustment in the areas where needed. Then use this project file to render to Mpg2.


AJP
DWALLYN wrote on 8/17/2004, 8:05 AM
Thanks, but it won't let me render to mpeg. Says I need to license the plug-in for mpeg? Anyway, I would just rerender to avi, then I use Ulead Workshop 2 for making my DVD. It takes quite a while to convert the video files before it writes to DVD. Maybe if I was able to write to mpeg-2 first it wouldn't take as long to write to DVD, right? But another question. Does the sound stay in sync when I make these changes to the rendered file in vegas. I don't understand how the sound can stay in sync, unless the sound track below takes over the cout out spot and plays, but it has to be right in sync with the avi file. Is that how it works? Thanks
DWALLYN wrote on 8/17/2004, 8:07 AM
I really appreciate your help. I've only been working with Vegas for about a month. One other question. Does the sound stay in sync when I do this cut out? It's a weding, so I can't have the sound sync off any.
apit34356 wrote on 8/17/2004, 8:30 AM
if you loaded the avi file back in vegas, the audio well remain syn., if you do not move the track timeline. adding an audio envelope does not effect syn or timelime, only volume control. If your adding another audio track, that does not effect the main track timing. for output,(for speed), you can frameserve from vegas into tmpgne(mpg2, free trial) or another encoder(permitting frameserving for input).

AJP