By anna greve (3dgirl) (210.54.89.62) on Wednesday, January 29, 2003 - 01:17 am:

has anyone come accross this problem before when dealing with PAL in lightwave:

i have some 25fps PAL video (upper field first- which i guess is the same as odd first) which is texture mapped onto an object in layout.

when i do a field render i get this weird pulldown thing happening (ie a doubling up of frames every so often}. i am rendering at 25fps and the clips are at 25 fps so i don't see how this could be happening unless LW somewhere is set to a default of interpreting everything as 30fps. the "frame rate" option in the image editor is greyed out so i can't manually tell it what it should be.

when i rendered the movies out as Targa sequences from after effects and brought them into LW like that (where the frame rate option was not greyed out and was automatically at 25fps), the pulldown effect did not happen and it rendered as it should, which leads me to believe that LW was definitly interpreting my avi movies as 3ofps NTSC, rather than PAL.

also, i always assumed that odd first was equal to upper field first but when i render in this manner i get reversed fields happening!!

so the only way i can get it to import correctly into my 25fps upper field first after effects project is to:

1- pre-render all movies as image sequences

2- interpret the footage as "odd first" in the image editor

3- render as "even first"

now even though this works i can't for the life of me see why- and don't want to have to pre-render my movies all the time. i have been absolutely tearing my hair out over this- can anyone help????

anna

By Arnie Cachelin (Arnie) (65.164.224.3) on Wednesday, January 29, 2003 - 01:15 pm:

The fields start at field 0, by convention, and 0 is evn, so the top field is even...
Also, there is bug in 7.5 animation import with keeping the correct fps from imported movies.

By RichA (Richa) (66.162.5.88) on Wednesday, January 29, 2003 - 04:47 pm:

Arnie is correct, Odd first is lower fields and Even is upper fields.

By anna greve (3dgirl) (210.54.89.62) on Wednesday, January 29, 2003 - 07:51 pm:

oh ok- i was thinking that the first frame was 1 (in which case odd first) didn't realise it was 0- ok that makes sense now thanks!

yeah i figured it HAD to be a bug or i was missing something very big! Is there a patch out for that yet?

figured out also that if your timeline is below 0 then your fields get reversed on the negative part of the timeline (for the imported movies)! was tearing my hair out as to why my movie went along fine and then suddenly the fields flipped for no apparent reason- finally figured out to make my timeline start at 0 and it all worked out. phew! that was a late night (deadline today)

thanks, anna