NTSC to PAL stutter

SteveK51 wrote on 8/12/2015, 10:12 PM
Hello,

I'm trying to mix a little NTSC footage with a mostly PAL project in Vegas Pro 12. So a little 30i in with 25i.

When I render the NTSC segments, it appears the frames are getting the field order reversed every 5th or 6th frame, in line with the 50/60 fps change. So most of the frames are fluid, but then it stutter-steps consistently.

Any thoughts on what would be causing this or how I can get around it, other than rendering my NTSC to 60p to lock in the frame sequence before introducing it into Vegas.

Comments

musicvid10 wrote on 8/12/2015, 10:43 PM
We need to see screenshots of your project and render settings.
Vegas will never eliminate the 4/5 cadence completely.
For that you need Twixtor, which is $$.
ritsmer wrote on 8/13/2015, 1:34 AM
If you have not done it - then switch off the "Smart resample" function.
SteveK51 wrote on 8/13/2015, 7:08 AM
Settings:

http://i104.photobucket.com/albums/m177/SteveK51/PAL2NTSC.jpg

Video sample illustrating the stutter (in slow motion with VLC).



musicvid10 wrote on 8/13/2015, 8:05 AM
Yep, field order is all messed up.
Hard to tell if it's the captured source or something happening in Vegas.
Upload the original capture somewhere and let us have a look.
SteveK51 wrote on 8/13/2015, 8:39 AM
Here's 80 mb of video. Just a minute of VHS > DVD in NTSC format, nothing really special about it. And I did confirm that this snippet exhibits the same stutter upon converting it to a PAL format.

http://expirebox.com/download/09e3025b5789715e2d6ace1436afc95b.html
musicvid10 wrote on 8/13/2015, 11:03 AM
Right-click and "View Image" to see full size.
I tried this and it works fine on Vegas Pro 8.


SteveK51 wrote on 8/13/2015, 9:54 PM
I'm still getting the same results, even with those changes. Even the same test file. I've tried it a number of times and it's still having issues with reversing the field order.

I do appreciate the help though.
wwaag wrote on 8/14/2015, 10:01 AM
@SteveK51

I downloaded your clip and imported it into V13. Although most NTSC DV files are lower field first, Vegas reported it as Upper Field First. This was confirmed in a field order test within Vegasaur. I set the project properties to PAL DV and rendered a simple MPEG-2 using the Program Sream PAL template. I did not Disable Resampling, although you might want to try that as well. The resulting file seems to play fine. I uploaded it to Dropbox. Here is the link https://www.dropbox.com/s/e2whgduc01k6ykr/ntsc%20test_converted.mpg?dl=0. Hopefully, you will get the same result.

wwaag

AKA the HappyOtter at https://tools4vegas.com/. System 1: Intel i7-8700k with HD 630 graphics plus an Nvidia RTX4070 graphics card. System 2: Intel i7-3770k with HD 4000 graphics plus an AMD RX550 graphics card. System 3: Laptop. Dell Inspiron Plus 16. Intel i7-11800H, Intel Graphics. Current cameras include Panasonic FZ2500, GoPro Hero11 and Hero8 Black plus a myriad of smartPhone, pocket cameras, video cameras and film cameras going back to the original Nikon S.

musicvid10 wrote on 8/14/2015, 2:14 PM
In Media Properties, set the field order to lower.
Sounds like its being misreported, for whatever reason.
Former user wrote on 8/14/2015, 3:31 PM
MV10, see wwag's response. I also checked it using Vegasauer and it appears to be upper field.
musicvid10 wrote on 8/14/2015, 6:02 PM
My Vegas Pro 8 sees his mpeg-2 as Lower field first, and it works fine that way.
I didn't know of any difference in the decoder in later Vegas versions.

wwaag wrote on 8/14/2015, 8:01 PM
I have opened this file in V9, V10, V12, and V13 and they all say Upper Field First. Mediainfo also says upper field first. The test in Vegasaur indicates its UFF. The bottom line is that it's Upper Field First, at least in more recent versions of Vegas. In any case, treating it as upper field first solves the OP's original problem and now it renders properly. Remember, he is using V12. That's the important thing.

wwaag

AKA the HappyOtter at https://tools4vegas.com/. System 1: Intel i7-8700k with HD 630 graphics plus an Nvidia RTX4070 graphics card. System 2: Intel i7-3770k with HD 4000 graphics plus an AMD RX550 graphics card. System 3: Laptop. Dell Inspiron Plus 16. Intel i7-11800H, Intel Graphics. Current cameras include Panasonic FZ2500, GoPro Hero11 and Hero8 Black plus a myriad of smartPhone, pocket cameras, video cameras and film cameras going back to the original Nikon S.

Former user wrote on 8/14/2015, 9:05 PM
Reads upper field in V12, mediainfo and Vegasaur on my system as well.