Firefox YouTube HDR mode works in Full Screen Mode, Picture in Picture, but not in normal Windowed mode
Hello,
Firefox YouTube HDR mode works in Full Screen Mode (FSM), Picture in Picture (PiP), but not in normal Windowed mode (WiM). This bug appeared in around Q3-Q4 2023, before that the YouTube HDR mode was available in FSM, PiP and WiM mode.
In Safari the YouTube HDR content works in FSM, PiP and WiM mode.
Firefox 115.7.0esr (64-bit) macOS Sonoma 14.3 ( I updated the system from macOS 13 in the last 2 weeks ) MacBook Pro 14", 2021 w/ Apple M1 Pro (1000 nits sustained full screen, 1600 nits peak)
This issue exists in all HDR videos what I tested on YouTube.
Video ID / sCPN DNL0IDYKzZs / R0TW 6WC7 574W Viewport / Frames 958x539*2.00 / 1 dropped of 1912 Current / Optimal Res 1920x1080@30 / 1920x1080@30 Volume / Normalized 100% / 100% (content loudness -7.1dB) Codecs vp09.02.51.10.01.09.18.09.00 (335) / opus (251) Color arib-std-b67 (HLG) / bt2020 Connection Speed 13936 Kbps Network Activity 0 KB Buffer Health 41.00 s Mystery Text s:4 t:1039.96 b:972.800-1080.966 P L pbs:3824 Date Fri Feb 02 2024 08:17:38 GMT+0100 (Central European Standard Time)
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Thank you in advance for your help and support.
Réti Gergő said
This bug appeared in around Q3-Q4 2023
You can use mozregression to find the day it first appeared which can help identify the change responsible.
Hello,
I tried to launch Firefox ESR 115.7.0esr (64-bit) in troubleshoot mode (hold Option key on startup), but this not resolved the issue, which appeared for me in Q3/Q4 2024. :/
I installed the Firefox ESR editions used in the last 1.5 years, but the video is not HDR in normal mode either (only when switching to full screen and picture-in-picture mode, the picture will actually be HDR). In normal mode, it appears that the HDR content is displayed, because the image is very dull, but when switching to full screen, the HDR image is perfectly beautiful. In the Safari browser, however, the image is HDR even in normal mode.
Are there any tool available to fix this issue?
Thank you in advance for your help and support.
I also have the same question.
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