More > JRiver Media Center 29 for Windows
Frame Interpolation
Smack:
I need the FI because when playing 4K videos the internal FI from Epson doesn’t work.
I really would like to play the movies in 60fps.
There is a program called SVP which does this. Maybe it will work with JRVR?
JimH:
Could you see if you can solve this by setting up two profiles? Use Zones and ZoneSwitch. The wiki has topics.
jmone:
--- Quote from: JimH on February 16, 2022, 07:04:44 am ---Could you see if you can solve this by setting up two profiles? Use Zones and ZoneSwitch. The wiki has topics.
--- End quote ---
This will not work for what Smack is wanting to do. FI on his Epson only works with 1080p/24 material and is disabled on UHD material. Looks like for those that want FI, it should be done at the HTPC's Renderers end.
--- Quote from: DocCharky on February 16, 2022, 02:54:07 am ---Well, many people (including myself) can't stand the chopiness of raw unprocessed 23p/24p.
I like to use a tad of frame interpolation on my displays (think 3 or 4 on a scale of 10). Enough to make things look a bit smoother, but not enough to introduce soap opera effect.
--- End quote ---
Thanks - I have the same issue with my own footage. I normally shoot in 50fps @ 360 degree shutter and find that traditional 25fps @ 180 degree shutter looks comparably poor due to the lack of motion blur (but that is normally due to consumer devices running at too high of a shutter speed and my own poor technique with panning speed). I can add some motion blur in post when increasing the temporal resolution on 25fps material on a 50fps timeline (eg similar to FI), and while it works it can produce some artefacts. While I absolutely understand and hate the judder issue with low temporal resolution footage (eg 24/25fps), I (personally) find it less of an issue with commercial content as film studios absolutely understand the issue and how to minimise it both when shooting and in post processing their material accordingly.
jmone:
FYI - the underlying library's to JRVR does support FI but I don't know how well it works (or how compute intensive they are) as the notes say:
--- Quote ---This allows libplacebo to perform rudimentary frame mixing / interpolation, in order to eliminate judder artifacts typically associated with source/display frame rate mismatch.
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It is also aimed at the situation where "frame rate <> refresh rate" rather than what I presume would be the desired "frame rate x Integer = refresh rate". One issue, is that out of the box most GPUs and Displays will not do a 48hz (ish) style refresh rate. Some HDMI 2.1 equipment will do 72 or 120hz which may work very well for such material. I'm not sure FI from 23.976 to a non integer multiple (say to 50/59.94/60) will look very good as you would have an unequal # of frame timing over a second.
Anyway, this is all just thinking outloud as you would need to convince Hendrik that the development of the feature is even worthwhile.
Hendrik:
--- Quote from: jmone on February 16, 2022, 02:48:36 pm ---FYI - the underlying library's to JRVR does support FI but I don't know how well it works (or how compute intensive they are) as the notes say:
--- End quote ---
It does not, it supports a SmoothMotion type feature. But there are a bunch of technical complications in using it, and the value has always been a bit on the questionable side to me, so I'm not sure yet.
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