Does rendering twice in the same format cause loss of quality?

[Edward Troxel]

A “new instance” simply means opening/starting Vegas again. You can start Vegas multiple times allowing you to work on multiple timelines at once.

Edward Troxel

[Sameer Chemmala]

download file cutter&joiner (software) to avoid rendering in two times.rename (x).mpg(s) extensions as 01.0001,01.0002…..etc.open the software,click join tab&join.then rename the finished file as 01.mpg and get ur video without any loss of quality.in this way many music and video formats can be joined without any loss of quality, taking an attension upon the ‘extensions’.

[Michael Uribe]

I’m actually exploring options dealing with the same problem indicated in your post (i.e., timeline segments with multiple layers, need to render in various orders into final timeline without rearranging actual timeline elements.)

I’ve explored this and have come up with a description of the desired task – Render Multiple Timeline Segments – as designated by ?? perhaps regions?

Thus, this desired rendering task is (following are named regions ontop of your timeline):
[Open Title][Interview 1][Interview 2][More stuf x][End Credits]

Now, when you hit the “Render As” option I would like the following options (and not just the “render looped region only” – which is very mickey mouse).

Render as:
1. Looped region
2. Region specific
– Select Regions
– Specify Order of Regions (up, down, etc.)

Then, when you click region specific, it gives you the option to then “click” on a box for each reason to include in the final rendered clip.

Walla, the final rendered once video was then assembled using the “region specific” option – which is not available in Vegas 8.1.

So, what do we do?

I’ve played with the option of using the tools – batch – regions.
This, however, simply cuts up the rendering into region specific clips. Good/bad – bad if as in other responses, if you then take those freshly rendered regions and assemble the into another new timeline and then place them in what ever order you want. Then, you render (unfortunately) again in the identical format you selected to make the region clips.

Now, as the other posters have said, mpeg2 re-rendering, is a lossy process. However, other formats perhaps are not lossy. I am using MainConcepts MP4 at a custom format. Not sure if it is tremendously lossy, at first glance I don’t see it.

So, arrange your timeline where each region has a little black at each end, and at the begin of each new region. That way, each region is rendered with a complete black ending to it, so when the next region is added next to it, the final video will not show a jump in the screen.

I’ve also just added the script below this post to explore whether it will add region specific rendering functionality to the game.

If not, I’m lucky to use the currently available tools/batch/regions/ option on the system and then re-rendering the clips after that. Sure, multiple rendering sucks.

Another Option:

If you feel comfortable or if your project is not that specific, you can then incorporate all the rendered regions (using the tools/batch/regions option) into dVD ARchitect. Then, create a playlist that will play them in the order you want.

Problem with this is that your repeat title will only repeat the segment in the playlist vs. looping your entire timeline as concieved in vegas.

Another problem is that you’ll need to add a good 4-5 seconds black screen at the end of each segment. For some reason, the playlist hopping from one segment to the other seems to loose the end and intros to some stuff I’ve played with using this option.

Like for example, the end credits. Instead of including them in each video segment, use the playlist feature in DVDArch, and then just have each playlist end with that clip. Again, worked, but a little jumpy, and lost the nice fade in because I lost a couple of seconds during the jump, resolved by adding extra black space. But, that “black time” can also be annoying and disrupt the pace of your piece – and that does matter when it matters.

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[Edward Troxel]

Tools – Scripting – Batch Render will let you render the regions separately but in one step.

Edward Troxel

[Michael Uribe]

Perhaps I wasn’t clear.

Scenario begin:
A master timeline exists, where the production will be finalized as one entire feature. However, there are certain venues where the production needs to be broken apart into pieces (the car chase, the love scene, the murder scene, the crash scene, etc.). However, to simply chop out a segment, without having it be bookended with titles/endcredis, is simply too half ass. So the chopped out segments need the original intro, or recreated intros, title screen, and final end credit screens for information and copyright purposes, etc.
Scenario end.

I do discuss the tool you mention, but as I said, that only renders “any and all” regions labeled in a timeline. Then, those rendered Regions are then separately stored as individual video files on the harddrive. So it breaks the timeline apart by Regions.

What I’m looking for, and the previous poster would benefit from, is to have control of which Regions are rendered (that is to select specific Regions, which have been already labeled in the timeline, and then specify the program to then render those regions, in a specific order, and into one final file onto the hard drive.

So Vegas needs to add the following render option to the user:

Render as / by region / specify to join/separate those regions / if joining, then specify order to join those regions / give it a file name.

Heck why not be able to designate output format as well as the user already can do with the simple Render as feature already in the program.

As it is now, I’m rendering the regions on my timeline. (Intro, event 1, event 2, event 3 (modified), event x, end credits, and then re-rendering those clips in another vegas instance, in an order of my choice.

When there are complicated layers in a Region, the idea of cuting, pasting, ripple editing (hoping the audio envelopes, event keys, etc all follow that ripple edit) is just not worth it.

That means one has to then specifically watch each clip, verify nothing was lost, and then drag the freshly rendered Regions onto another time line, in the order preferred, and then, once again, re-render again to simply join them.

Not a very efficient workflow- and I’m not inclined to research a good joiner application. Those seem to be limited to certain video formats (avi, etc). And agin, one has to re-render for that joining process to complete (degrades quality, and increases productino time).

Maybe I’ll create an animation of what the goal is here.

AS it stands now, the Tools – Scripts – Batch – Region option simply finds any and all regions, and individually renders those regions into a bunch of separate files on the hard drive.

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