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deinterlace 50i to 25p with smooth motion

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Zsolt Koppányi
deinterlace 50i to 25p with smooth motion
on Nov 20, 2016 at 4:45:05 pm


I sent this post to Premiere Pro forum but I use both programs, and could an AE expert here who knows the answer.

My original footage (.mts) setting is 1920x1080 50i (this cam can't record progressive frames)
and I'd like to export them as 25p from the timeline of AE or PPro 2015.

In the beginning, I made a composition matching my footage settings and changed Field Order to Progressive in AME. However the quality of the output (H.264) was worse than my original AVCHD source watching on both WinMediaPlayer and VLC. Artifacts (combs) doesn't occured but "stuttering" (frame skipping) appeared in the movements.

After a lot of tests, I found a solution: rendering with double frame rate

In PPro: my sequence match the original footage settings (50i) and render to 50p.
In AE: I also have to double the Comp's frame rate (50fps) and render to 50p

The result is perfect, movements got smooth like the original.
I'm aware it's not an elegant solution, but works. However I'm looking for a method how to convert 50i to only 25p without jerkyness?
I applied Fieldskit Deinterlace tryout on the footage (interpreted to progressive) with a lot of adjustments but after rendering to 25p I didn't experienced any improvement in the stuttering. Is there anyone who can achieve perfect results using such plug-ins?

Every time I use "Mercury Playback Engine Software Only", because OpenCL often interrupt rendering.

Thank you

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