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Create progressive scan DVD w/o rerendering
My question is about project properties. If I choose under project properties, under field order, none will this ensure that the rendered file will be progressive scan?
The reason that I ask is if I set a project this way & then proceed to render it if I see that its defaulted to DVD architect video stream which seems correct. But it I then go further but alter nothing & select custom settings I see that field order is set to lower field first which is interlaced video.
In other words if I definitely want a progressive scan DVD produced by DVDA that won’t be re rendered by DVDA what is the correct way to go? I’m using Vegas 6 & DVDA3 just in case this makes a difference.
Thanks in advance
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5 Replies
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> My question is about project properties. If I choose under project properties, under field order, none will this ensure that the rendered file will be progressive scan?
No. Your project properties really have nothing to do with rendering. It is recommended that you keep them the same but if you are rendering to multiple formats that isn’t possible.
You are on the right path. If I know my output will be progressive, I would start with a progressive project. This way there are no surprises because you will be editing in the same format as you will be rendering. Just make sure you choose progressive in your MPEG-2 template. The 24p templates default to progressive but the NTSC and PAL would need to be changed.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
Thanks for that information. I have tried rendering out files before to progressive scan & indeed if I were to then bring the back into the Vegas time line it says that the field order is none. The problem then is once I have taken the same file into DVDA3 it tells me that it needs to be re compressed even though the file size easily fits onto selected media size. How do I stop the re rendering?
Thanks in advance
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DVD Architect will only recompress if your stream is not DVD compliant. I believe that the only compliant stream that is progressive is 24p. So if your media is flagged as being 24p DVD Architect will not re-encode but if you are creating a 30p or 25p stream, DVD Architect will make them 60i and 50i respectively because this is what the DVD specification calls for. This is obviously for compatibility reasons with existing DVD players.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
If I understand you correctly if I render out using 24P in Vegas then DVDA won’t re render. If this is the case then I’m still probably no better off doing this since the file imported into DVDA is probably poorer in quality, since Vegas would have had to convert my original 25FS PAL to 24P which I assume entails a quality loss. Is this correct?
Thanks in advance
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Yup. DVD’s don’t support 25p and if you convert in Vegas you may loose quality (I’ve never done this) but I would try and sample and see if you can tell the difference. There are tools like CineForm Connect HD, Neo HDV, etc. that will convert 25p to 24p by slowing the video by 4% (which is the difference in frame rate) and re-encoding. You really can’t detect a 4% slow down.
~jr
http://www.johnrofrano.com
http://www.vasst.com
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