System and IINA version:

• macOS 12?
• IINA 1.3.0

Expected behavior:
When playing HDR video taken on iPhone in IINA on a MacBook 16 2021 (M1 Max) the picture matches what is seen with Quicktime.

Actual behavior:
The luminance is inappropriate, resulting in a catastrophic loss of details.

Quicktime:

IINA:

Steps to reproduce:
Take a video with an iPhone 13 Pro and play the video in IINA.

The issue is more noticeable in indoor clips and/or at higher brightness levels.

This issue was reported by @jesec in discussions about PR #3701, the commit that added HDR playback support in 1.3.0. This was also reported in the IINA Telegram Group.

• MPV does not have this problem.

How often does this happen?
Everytime.