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Post #723708

Author
Harmy
Parent topic
Help with interlaced video in After Effects
Link to post in topic
https://originaltrilogy.com/post/id/723708/action/topic#723708
Date created
23-Aug-2014, 9:19 AM

I've pretty much finished the color correction of Puggo's ROTJ but I'm having some trouble with the interlacing of Puggo's files.

Here's the media nfo of one of the AVIs I got from Puggo:

Format                                   : AVI
Format/Info                              : Audio Video Interleave
Commercial name                          : DVCPRO
Format profile                           : OpenDML
File size                                : 4.15 GiB
Duration                                 : 20mn 36s
Overall bit rate mode                    : Constant
Overall bit rate                         : 28.9 Mbps

Video
ID                                       : 0
Format                                   : DV
Commercial name                          : DVCPRO
Codec ID                                 : dvsd
Codec ID/Hint                            : Sony
Duration                                 : 20mn 36s
Bit rate mode                            : Constant
Bit rate                                 : 24.4 Mbps
Encoded bit rate                         : 28.8 Mbps
Width                                    : 720 pixels
Height                                   : 480 pixels
Display aspect ratio                     : 4:3
Frame rate mode                          : Constant
Frame rate                               : 29.970 fps
Standard                                 : NTSC
Color space                              : YUV
Chroma subsampling                       : 4:1:1
Bit depth                                : 8 bits
Scan type                                : Interlaced
Scan order                               : Bottom Field First
Compression mode                         : Lossy
Bits/(Pixel*Frame)                       : 2.357
Stream size                              : 4.14 GiB (100%)
Encoding settings                        : ae mode=manual / wb mode=one push / white balance= / fcm=manual focus

The only interlacing settings I found in AE were in the Interpret Footage menu for each input file. The default settings were "Lower Field First" but as you can see in picture A) bellow (open link in new panel to see full resolution) this created horrible aliasing, so I tried checking the "Preserve Edges" box, which helped a tiny bit but as you can see in picture C, when setting "Separate Fields" to "Off" the jaggies disappeared completely - I thought then, that I had figured it out, only to find, that the "Off" setting took care of the aliasing, only to introduce typical interlacing artifacts (as seen in picture C2) which in turn disappear, when you set it to "Lower Field First" (B2).

Trying to play with the pulldown settings only introduced even worse interlacing artifacts and I'm quite sure that there is no pulldown in Puggo's files anyway, because when you play them, they do run at 29.97fps (way too fast).

Can anyone please help?