Can I use/create progressive scan files?

Phototaker · Post by **Phototaker** » Wed Jul 04, 2007 8:06 am

Does DVDMF5 allow you to have progressive scan files, either imported as MPEG2 or else rendered out by DVDMF5?

etech6355 · Post by **etech6355** » Wed Jul 04, 2007 8:45 pm

Phototaker · Post by **Phototaker** » Thu Jul 05, 2007 3:12 am

I have looked through all of the MPEG2 settings & can't see an option to use progressive scan. Where is it found?

etech6355 · Post by **etech6355** » Thu Jul 05, 2007 3:18 am

"No Fields" or "Frame_Based" is also the term used for encoding progressive, at least with these products.

You may be getting term progressive confused with the progressive scanning used on HDTV's. You would still choose frame_based but what's important is your source video.
If you source video is field based (50/60 pictures per second) then changing it to frame based yields 25/30 pictures per second. To perform this conversion isn't easy to retain the original videos smooth motion.

It's better to explain what you are doing. The source videos properties, playback devices. Standard Definition or HighDefintion video.

Phototaker · Post by **Phototaker** » Thu Jul 05, 2007 3:32 am

I can create MPEG2 files using Vegas video using progressive scan rather than the usual interlaced version that is on most DVD's. Since all my DVD players & 1080P LCD TV screen supports progressive scan it seemed reasonable to encode my DVD's that way.

etech6355 · Post by **etech6355** » Thu Jul 05, 2007 4:27 am

I can create MPEG2 files using Vegas video using progressive scan rather than the usual interlaced version that is on most DVD's. Since all my DVD players & 1080P LCD TV screen supports progressive scan it seemed reasonable to encode my DVD's that way.

No, it doesn't work that way. In Vegas frame_based is progressive scan, it's the same term. The difference is when using Vegas, under your Project Settings you have a selection to blend or interpolate the fields to produce a better frame based video if your source video is interlaced.

You will achieve the best results staying with the original fielding and frame_size. For example a HDV video file from a consumer cam is UFF (upper field first). You would stay with UFF all the way to the end of the project (including the final rendered video file). Doing this your video file will retain it's original fielding information (50/60 pictures per second) & quality thus making it compatible for any HighDefinition Video player to display the video in 480i/480p/720p/1080i/1080p display modes..

It's easy to get the term "Progressive Scanning" confused with the video format of the file. "Progressive Scanning" is a "Display Mode", true line doubling and doubling of the vertical scanning rate of your display device. It's not to be confused with video formats.

To put it simple the makers of the dvd players and HighDefintion players want to see the video(s) in their correct video format so their players can work properly. I playback 1440x1080 Interlaced Videos on interlaced and progressive HDTV displays, in ALL the "Display Modes". The videos look great and retain the original motion.