How do you handle mixed interlacing?

MKV playback, recompression, remuxing, codec packs, players, howtos, etc.
Post Reply
axymeus
Posts: 4
Joined: Mon Mar 19, 2018 10:19 pm

How do you handle mixed interlacing?

Post by axymeus » Tue May 01, 2018 1:54 pm

Hey, I don't really know how to phrase that question, sorry if the title souds weird... Many of my DVDs present a combination of progressive and interlaced frames in their content. Most of the movie will look progressive (no combing), and then one scene is interlaced; sometimes it's only the transitions between scenes that are. I really don't understand how it can even be, but hey... Running ffmpeg idet determines that the source is progressive (mostly). Here's an example in MacGyver, season 2 episode 20 :

Image
Image

I suppose this may be due to the fact that my DVDs are all PAL, but I don't know if I should deinterlace those videos. The vertical resolution would be divided in half if I do, all for the benefit of a few minutes in the whole season. So, how do you handle that, if you have ever encountered this case?

Woodstock
Posts: 5378
Joined: Sun Jul 24, 2011 11:21 pm

Re: How do you handle mixed interlacing?

Post by Woodstock » Tue May 01, 2018 5:06 pm

Handbrake, filter decomb=BOB.
How to aid in finding the answer to your problem: https://www.makemkv.com/faq/item/8

axymeus
Posts: 4
Joined: Mon Mar 19, 2018 10:19 pm

Re: How do you handle mixed interlacing?

Post by axymeus » Tue May 01, 2018 6:16 pm

Correct me if I'm wrong, doesn't the bob filter works like yadif mode 1 (one frame for each field)? I think it does, and so effectively divides the vertical resolution by 2, but preserves smooth motion.

Woodstock
Posts: 5378
Joined: Sun Jul 24, 2011 11:21 pm

Re: How do you handle mixed interlacing?

Post by Woodstock » Tue May 01, 2018 10:35 pm

I think that's what the handbrake people said.

I've been finding that it works better for my DVD sources than "default".
How to aid in finding the answer to your problem: https://www.makemkv.com/faq/item/8

Post Reply