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Deinterlace, or not?
Hi!
Some of the video footage I have to handle is 1080i 50 fields per second (it is called fields per second right?). When I am using this video footage for publishing to computers, say end user video, youtube etc I don’t want it to be interlaced. I’m not used to handling interlaced material so I have a few questions here:
1. Do I need to deinterlace at all? Just rendering to a progressive format might be enough?
2. If interlacing, which mode of deinterlacing is best suited? Vegas has 2.
3. What progressive frame rate should I render to, 25P seems the logical choice here, but maybe this isn’t correct?The end video usually is renderd in 720p but vga 640×480 aswell as 1080p does happen.
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5 Replies
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[Kristian Tigersjäl] “Some of the video footage I have to handle is 1080i 50 fields per second (it is called fields per second right?)”
Yes, fields per second… that’s right.
[Kristian Tigersjäl] “1. Do I need to deinterlace at all? Just rendering to a progressive format might be enough?”
Just rendering to a progressive format is enough. No need to deinterlace anywhere else.
[Kristian Tigersjäl] “2. If interlacing, which mode of deinterlacing is best suited? Vegas has 2.”
Use Blend fields. If that looks bad, try Interpolate. Blend will give you more resolution but if the motion is really fast between fields you may have no choice but to use interpolation which will throw half of the fields away.
[Kristian Tigersjäl] “3. What progressive frame rate should I render to, 25P seems the logical choice here, but maybe this isn’t correct?”
25p sounds right if you started with 50i.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
Thanks for the ultrafast answer 😉
Seems that I understood most of this correctly then. So Blend for everything if the motion isn’t very fast where interpolate may be better. Great.
Thanks again.
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If you use a program such as Autodesk Cleaner, Anystream etc.. you would use ADAPTIVE deinterlacing which simply deinterlaces only what needs to be deinterlaced and not the whole picture.
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Oh I wasn’t aware such a thing existed since I’ve not worked much with interlaced material before, good to know!
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