Playing with the EX3 and reading many posts about DVD-downconvert from HD, I try several renders to check quality for SD-DVDs.
The clip was shoot in 1080 30p with the following render options in Vegas 8.0c (no FX plugins added) once importing mxf file from clip browser 2 (see attached image):
1- HD1080p timeline
2- NTSC DV wide timeline with nested HD project
3- NTSC DV wide timeline with 1080p clip
4- clip downconverted with clip browser 2 (DV-AVI) on NTSC DV wide
The results from the 3 first options are almost the same (1st photo), all 4 renders to std.(no changes) DVD arch NTSC-wide template.
Photos taken from DVD played on powerDVD (capture option).
The differences are evident; working with the HD clip (on either 3 options) result on a more sharper DVD image BUT with "jagged" edges artifacts on lines... on the other side, downconverting the same HD clip (with clip browser 2) gives a more "fuzzy" image (without the "jagged" problem).
Testing on a std. TV set also reveals (altough with less details) the problems... I will check the same DVD on a HDTV later...
Don't know the scaler suggested by Perrone but I find that BitVice does a very good downscale whilst encoding the MPEG 2 file. No jagged edges but panning down a rock face or shrubbery does produce some noise - this seems unavoidable with the MPEG 2 codec.
After some tests I find a practical solution to minimize (almost avoid) the "jagged edges" problem of my clip ..... maybe some other EX users want to try.
Just render the mxf file (1080p) in Vegas to mpeg2 DVD arch NTSC-wide template, BUT make sure you render at BEST seetings (the same I always use when working with hi-res photos) and PROGRESSIVE scan in the custom settings.... I will make more testing rendering the HD clip on a NTSC-DVwide template, but for me this is a very good solution using only Vegas....