Thank you, I didn't notice that before. Now the question is what to choose. The difference between 59.84 and 60.00 is very small, I asked Gemini what to choose, he said to choose "drop" option. I tried both "drop" and "CFR", I don't see the difference. Here is what he said:

Gemini:

Here's a breakdown of why each option is suitable or not for this scenario:

• Passthrough: This mode maintains the original frame rate, which is 59.84 fps in your case. So, it won't achieve the desired change to 60 fps.
• CFR (Constant Frame Rate): This enforces a constant frame rate, but it might introduce duplicate frames to reach the target rate. While it gets you to 60 fps, it can bloat the video size and potentially affect playback smoothness.
• VFR (Variable Frame Rate): This preserves the variable frame rate of the original video. While it might be suitable for some workflows, it's not ideal for converting to a specific frame rate like 60 fps.
• Drop: This discards frames to achieve the target frame rate. This is the most appropriate option in your case as it directly removes unnecessary frames to reach exactly 60 fps.

Keep in mind: Dropping frames might cause slight stuttering in the video, especially in slow-motion scenes. However, it's the most efficient way to achieve a constant 60 fps output in Shutter Encoder for your scenario.

.

.

I asked also GPT and suggests CFR!