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Why would DVDA want to re render?
I was making a project that was made up 100 % of digital photographs where most of them had the pan/crop tool used for movement. When I went to set the project details I noticed that I had 2 choices one for the regular 4×3 PAL DV of 720×576 or for square pixels as 4×3 PAL DV of 768×576. Since these were digtital photos I chose the latter. Before rendering the 2 files I checked that the interlace flicker filter was turned on. The sound was rendered as AC3.
Once I imported the MPEG2 & AC3 file into DVDA I created a simple menu. When I came to make the DVD I was astonished to see that it said that my MPEG2 file would be re rendered. Why should this happen? I was under the impression that if you imported a compliant MPEG2 file it would not need to be re rendered. Am I wrong? Has this anything to do with the fact that it was rendered as 768X576 instead of 720×576? If so what would have happened if I had left it as 720×576? I was more concerned about any loss in quality re the rendering again rather than the extra time this took.
I wanted to see the results before I did a final burn so I used a R/W disk. I’m getting a lot of shimmer in the picture which I suspect comes from the interlacing of the picture. Again would this have happened if I hadn’t been required to re render the project?
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3 Replies
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If your media doesn’t match your settings in Project Properties, it’s going to re-render. If you want to check what DVDA considers conformed, use File>Optomize DVD.
BTW, I would just go with the regular aspect ratio.
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Is doing that likely to also to help with the shimmering?
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Let’s put it this way: Compressing your video twice is not helping the image quality.
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