Decombing Interlaced Video

[OmegaWarrior]

I've tried bob(), Telecide() and a few other filters, but none of them can get rid of that damn combing effect on my video, so I end up using the VirtualDub filter, which doesn't really remove the interlaced lines but more like it expands them to create a motion-blurring effect, which I would really prefer not to have. Can anyone tell me either how I can get these filters to work if I'm doing something wrong or point me toward one that I can use?

Also, another thing:
I put video on my computer in 4 steps:
1) capture the video/audio (MJPEG/PCM)
2) edit and process the video stream with filters and compress the sound to MP3 format (MJPEG/MP3)
3) DivX 5.2 compression: first pass
4) DivX 5.2 compression: second pass

here's the thing: despite the fact that the step 2 file has edited out a significant number of frames, the audio is compressed to MP3, the video codec is the same, and the images have less noise (which should make them compress more, I assume), the Step 2 file is a few Gigabytes LARGER than the origional capture! Can anyone explain this to me?


http://www.danasoft.com/sig/Mokushiroku.jpg

[Leak]

Originally posted by OmegaWarrior
I've tried bob(), Telecide() and a few other filters, but none of them can get rid of that damn combing effect on my video, so I end up using the VirtualDub filter, which doesn't really remove the interlaced lines but more like it expands them to create a motion-blurring effect, which I would really prefer not to have. Can anyone tell me either how I can get these filters to work if I'm doing something wrong or point me toward one that I can use?

We'd be better able to help you if you could post a short clip that shows the combing you mention. What kind of video is it? A camcorder recording? Film? Video?

In any case, filters like TomsMoComp, KernelDeint or FieldDeinterlace should be able to get rid of the combing - provided you didn't do things like resizing the video or something like that before deinterlacing.

Also, another thing:
I put video on my computer in 4 steps:
1) capture the video/audio (MJPEG/PCM)
2) edit and process the video stream with filters and compress the sound to MP3 format (MJPEG/MP3)
3) DivX 5.2 compression: first pass
4) DivX 5.2 compression: second pass

here's the thing: despite the fact that the step 2 file has edited out a significant number of frames, the audio is compressed to MP3, the video codec is the same, and the images have less noise (which should make them compress more, I assume), the Step 2 file is a few Gigabytes LARGER than the origional capture! Can anyone explain this to me?

Well, unless you re-compress the video produced in step 2 (what are you using for this?), you'll end up with uncompressed frames, as you can't process compressed video without uncompressing it - and of course uncompressed frames are a lot larger than the source.

[OmegaWarrior]

The input and output video use the same codec; yes I did re-compress it in step two.

I tried fieldDeinterlace, but it didn't fix it, I'll see if I can't post a small clip later this weekend. It's easiest to notice when I do animated video (BTW: I'm recording shows off of my DVR (it's like a TiVo), just FYI.) So I'll put up a small clip of ATHF that demonstrates the problem.

http://www.danasoft.com/sig/Mokushiroku.jpg