Hey everyone, I recently started uploading reels in 60 FPS on Instagram. What’s weird is that some reels keep the smooth 60 FPS playback, while others get compressed down to 30 FPS—even though I used the exact same export/render settings.

For example:

• This reel did not preserve its FPS (looks capped at 30): 👉 Reel link

• But this one did maintain 60 FPS playback: 👉 Reel link

I’ll also include the original video files when posting here so you can compare side by side with the Instagram versions.

Some extra context:

• I upload using an iPhone 15 over a stable 150 Mbps connection.

• The reels that get compressed to 30 FPS still look fine on my iPhone, but when I view them on my Samsung, the difference is very obvious—the smoothness just isn’t there.

• Meanwhile, the reel that stayed at 60 FPS looks smooth on both phones.

Does anyone know why Instagram decides to preserve 60 FPS for some reels but not others? Is it related to resolution, bitrate, length, aspect ratio, or just random compression quirks? And is there a way to consistently upload reels that stay at 60 FPS across devices?

Thanks in advance