60p To Interlaced DVD

[Mr.Bean915]

Hello,
I have a video file which is a recording of a PC video game made in-game using screen capture software (Fraps).
The video is DivX and is 60fps.

I have used DVD Flick to convert this file to DVD with no problems, but I would like to know if I could make it better!
DVD Flick converts the file from 60p to 30p which works fine in my DVD player.
But as the source is a video game, framerate is quite important here and you do notice the lack of motion which I assume is quite likely given the fact that the fps is now half.

I would like to know if it's possible to convert the original 60p video into a interlaced (30i) DVD?
Thus retaining the original motion?

[jagabo]

AviSynth:

AviSource("filename.avi")
AssumeTFF()
SeparateFields()
SelectEvery(4, 0, 3)
Weave()

Encode as interlaced 29.97 fps TFF MPEG2 for DVD.

[Mr.Bean915]

Thanks that's just what I needed, DVD looks great now.

Some encoding programs I use only interlace bottom field first.
Is it possible to modify this script to encode a BFF MPEG2?

[FulciLives]

*** EDIT ***

nevermind

[jman98]

Thanks that's just what I needed, DVD looks great now.

Some encoding programs I use only interlace bottom field first.
Is it possible to modify this script to encode a BFF MPEG2?

AssumeTFF means "Assume Top Field First" so one might expect (I don't care enough to do YOUR work - YOU look it up) that something like AssumeBFF might also exist.

[Mr.Bean915]

Yes I do know that AssumeBFF exists and have had a look on the Avisynth website.
I do apologise for my stupidity, and wouldn't expect someone to do my work for me.

I hope this isn't asking for to much:
Does this line: SelectEvery(4, 0, 3)
affect the field-order of the video, and would it need to be changed for bottom field first?

I have done some research and am still confused, but you don't have to answer.

[jagabo]

In this case, if you want BFF output you only have to change AssumeTFF() to AssumeBFF():

AviSource("filename.avi")
AssumeBFF()
SeparateFields()
SelectEvery(4, 0, 3)
Weave()

Since your source is progressive you can treat it as either TFF or BFF. If your source was interlaced it would be a little more complicated.

[manono]

And make sure you then set up your encoder correctly. If you get jerky playback following that script, the encoder was set up wrongly. If you get jerky playback on what was originally an interlaced source, then it could be a faulty script or a faulty setup in the encoder.