scenarist Problem

[anders@dac.se]

I've made a DVD from a DV-camera...

I've used TMPGenc to encode the m2v and mp2. The m2v clip runs smoth and fine.

But if i author it in scenarist the clip is very jerky. I've both tried to run the vob files dirtely on drive and to burn it down on DVD, same result..

Anyone have any ideas?

/Anders

[guns1inger]

What field arrangement did you use when you ran it through tmpgenc ? It sounds like the fields have been reversed. It should the lower (or bottom) field first for DV.

[anders@dac.se]

Thanks for a promt reply...

Yea, it was set to bottom, and its not jerky all the time.. Just at some points.

/Anders

[anders@dac.se]

I've just come up with something.... I have some 3ds max footages in the clip. Those scenes are not interlace, tmpgenc encodes the entire clip as it was interlaced (bottom field first). Can this be the problem?


/Anders

[guns1inger]

Could be. You have two choices. Either

1. Run the 3dsmax scenes through VirtualDub and output interlaced footage and edit it back in,

or

2. Rerender the 3dsmax clips as interlaced footage.

Option 2 is the best option, however it is probably the most time consuming and least practical.

[anders@dac.se]

Thanks will try

3rd option deinterlace DV footaqe?


I have some captions over the interlaced DV clip. Those captions are not interlaced, that can not create problems right?


/Anders

[guns1inger]

You may compromise the quality of your DV footage if you deinterlace it. The problem you have is that the two fields do not match up exactly to make a frame. They are a fractions of a second apart in time (1/50th for PAL, almost 1/60th for NTSC). Deinterlacing will require a decision on your part. Do you a) throw away one field (and if so, which one ?) and stretch the remaining field to full height ?, or b) blend the fields together and hope they match up reasonably well ?

If the project in your editor is set to interlaced, then the output will be interlaced, regardless of the source. The 3D will look more jerky because it does not have 50 (or 60) fields, but rather 25 (or 30), each shown twice.

You could try applying a subtle motion blur to the 3d footage in the editor. It may help cover it up.

[anders@dac.se]

Even the sound is out of sync to the from the picture in these shots. can that also be a result from this? It looks like the sound only is out of sync in the none interlace parts (3ds clips)

/Anders