Skip to main content
J
jamesh70782044
Participant
August 15, 2017
Question

Deinterlace and Optical Flow

  • August 15, 2017
  • 1 reply
  • 694 views

Hi everyone,

I am converting 29.97 interlaced footage to 24 progressive and have noticed that the deinterlacer is doing some weird things when combined with optical flow. Has anyone else noticed this happening or is it something particular to my setup? I am using CUDA and Maximum render quality.

Cheers,

James

This topic has been closed for replies.

1 reply

chrisw44157881
chrisw44157881
Inspiring
August 15, 2017

if its 3:2 pulldown 29.97, premiere will remove it automatically if you place it in a 23.976 sequence. if its pure 29.97i, you will always get better quality if you deinterlace with a better deinterlacer before optical frame changing as adobe uses an old bob and weave deinterlacer, ie. no motion estimation.

what do you mean by "weird things"?

try:

1. turning off maximum quality

2. delete media cache

3. turn off cuda

4. disable h.264 acceleration

5. nesting the deinterlaced footage before optical retiming

J
jamesh70782044Author
Participant
August 15, 2017

thanks for your reply, I wasn't aware it only did bob and weave.

The 'weird' artifact I saw was one a static logo overlaid on the film that was flickering once de-interlaced. This didn't flicker when Premiere was set to ONLY deinterlace and not use optical flow. The two in combination caused it to happen.

I will try those solutions and see where it gets me

Terms & ConditionsAccessibility statement
Using the community Terms of use Privacy Cookie preferences Do not sell or share my personal information ad choicesAdChoices