GH4 video judder/strobing - a solution

left eye wrote:

The majority of inbuilt laptop screens are fixed at 60Hz, the processor driving them has to resort to 3:2 pulldown to make the maths work, 24 into 60 doesn't go. The result will be judder.

External monitors that have a maximum refresh rate of 60Hz, are usually flexible, and can run at lower refresh rates - controlled by the computer's graphic processor. I suspect your 60Hz monitor is running at 48Hz when being fed a 24fps signal.

The point is not all 60Hz monitors (or greater rates) are flexible enough to run at all lower rates, usually they can handle 50Hz to display the European standard of 25fps broadcast - used for many many decades. 24fps although having been widely used in the film industry wasn't a 'household' standard until relatively recently - in the past few years many more monitors are able to reduce their refresh down to 48Hz - but not all, especially in the 4k realm.

Out of interest, what is the make/model of your monitor?

This is so true. I can confirm right here. PotPlayer absolutely does nothing to help with judder on my BENQ G2420HD 24" monitor. However, every single video player plays my 24p videos judder free on my Phillips LCD 244E one which has variable framerate. So PotPlayer won't fix your judder problem if you don't already have monitor of this kind.

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GH4, Vario 14-42mm, Sigma 30mm f/2.8, Rokinon 85mm f/1.4, Rokinon 14mm f/2.8, Lens Turbo II (Mark II) focal reducer