Topic: Setting the correct refresh rate on my TV

I'm a bit confuse after reading some posts here on the forum, so, I have two questions:

1 - When setting the refresh rate of my TV, I need to consider the original frame rate of the video source (23.976 hz), or the refresh rate that SVP is converting (47.952, 59.940, etc)?

2 - My TV have a refresh rate of 120 hz. Considering 23.976 hz or 59.940 hz, I can easily set my TV to 23.976, 59.940 or even 119.88, to have the same or the exact multiple. The problem is with 47.952, because I can only set my TV 47 or 48 hz. With 23.976, for example, setting the refresh rate to 23 hz makes it run at 23.976, but with 47 hz it is not going to 47.952. How could I correctly watch when on 47.952 hz?

I have a RTX 3070 Ti.

2 Reply by UHD (edited by UHD 16-09-2021 11:33:12)

  • UHD
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Re: Setting the correct refresh rate on my TV

1. The second one - the refresh rate that SVP is converting.

2A. If you are using TV then check if the internal TV interpolation does not give better results (less artifacts) than SVP. If not, see 2B.

2B. If you are using SVP with TV check if TV has Adaptive-Sync. If not then see 2C.

2C. If your video source is 23.976 hz and TV allows 119.88 hz then use x5 interpolation in SVP (23.976 hz x 5 = 119.88 hz).

Re: Setting the correct refresh rate on my TV

UHD wrote:

1. The second one - the refresh rate that SVP is converting.

2A. If you are using TV then check if the internal TV interpolation does not give better results (less artifacts) than SVP. If not, see 2B.

2B. If you are using SVP with TV check if TV has Adaptive-Sync. If not then see 2C.

2C. If your video source is 23.976 hz and TV allows 119.88 hz then use x5 interpolation in SVP (23.976 hz x 5 = 119.88 hz).

2A - I don't like my TV's interpolation, because it has more artefacts than SVP.

2B - My TV (LG OLED C9) is g-sync compatible, but even with g-sync enabled for fullscreen and windowed, it doesnt seens to be working with video.

2C - I use 60hz at maximum, because I use interpolation only to reduce stutter on panning imagens. Using 59.940 fits on 119.88, but 47.952 don't.

  • UHD
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Re: Setting the correct refresh rate on my TV

I can't help you with g-sync, but if you manage to use it, you will get the best possible sync and you can use x3 or x5 interpolation in SVP.

If you fail with g-sync, then if you want to reduce stuttering on panning images to a minimum, then as I wrote x5 in SVP and 119.88 Hz in TV.

Re: Setting the correct refresh rate on my TV

UHD wrote:

I can't help you with g-sync, but if you manage to use it, you will get the best possible sync and you can use x3 or x5 interpolation in SVP.

If you fail with g-sync, then if you want to reduce stuttering on panning images to a minimum, then as I wrote x5 in SVP and 119.88 Hz in TV.

I want to reduce OLED stutter without changing too much the original feeling of the movie or adding too much fluidity to it. This is why I don't want to use 119.88 and prefer to use 47.952 or at maximum 59.940.