From Newsgroup: alt.comp.software.firefox

When I visit this site:

https://openai.com/gpt-5/

a video starts playing, and the process 'RDD Process' appears in 'top'
(linux command line) and the usage goes up from 90% to over 100%. Also,
when I click the try gpt-5, it does not launch gpt-5, but instead stays
on 4. I don't see these problems with Brave.

According to Chat-gpt this process is a sandbox video playing
process. But when I pause the video it still uses over 100% cpu.

I set media.autoplay.blocking_policy = 2 but the video still plays
without asking.

The only way I know to check which version of chat-gpt is in use is to
ask it. Version 5 confirms itself.

Debian GNU/Linux 12
Debian 6.1.140-1 (2025-05-22) x86_64 GNU/Linux
Mozilla Firefox 128.13.0esr
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From Newsgroup: alt.comp.software.firefox

Richmond wrote:

video starts playing, and the process 'RDD Process' appears

Remote Data Decoder, keeps the video codec sandboxed from the main
firefox process.

<https://wiki.mozilla.org/Security/Sandbox/Process_model#Remote_Data_Decoder_(RDD)>
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From Newsgroup: alt.comp.software.firefox

Richmond <dnomhcir@gmx.com> wrote:

When I visit this site:

https://openai.com/gpt-5/

a video starts playing, and the process 'RDD Process' appears in 'top'
(linux command line) and the usage goes up from 90% to over 100%. Also,
when I click the try gpt-5, it does not launch gpt-5, but instead stays
on 4. I don't see these problems with Brave.

According to Chat-gpt this process is a sandbox video playing
process. But when I pause the video it still uses over 100% cpu.

I set media.autoplay.blocking_policy = 2 but the video still plays
without asking.

The only way I know to check which version of chat-gpt is in use is to
ask it. Version 5 confirms itself.

Debian GNU/Linux 12
Debian 6.1.140-1 (2025-05-22) x86_64 GNU/Linux
Mozilla Firefox 128.13.0esr

From a search on "rdd process", I found:

https://askubuntu.com/questions/1483112/high-cpu-usage-by-a-firefox-subprocess-called-rdd-process

Go into about:config and set media.rdd = false. Without the media
getting funneled through the sandboxed RDD process, if the video process crashes then so does the web browser.

https://www.reddit.com/r/linux/comments/xcikym/tutorial_how_to_enable_hardware_video/

That mentions VA-API, and checking if hardware (GPU) acceleration is
enabled in about:config, but also mentions nVidia GPU's don't have
VA-API. You didn't mention your video card. RDD uses the GPU for
hardware acceleration.

https://en.wikipedia.org/wiki/Video_Acceleration_API

RDD uses the GPU for hardware acceleration. I found an article that
mentions how to ensure it is enabled in FF at:

https://discourse.ubuntu.com/t/enabling-accelerated-video-decoding-in-firefox-on-ubuntu-21-04/22081
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From Newsgroup: alt.comp.software.firefox

VanguardLH <V@nguard.LH> writes:

Richmond <dnomhcir@gmx.com> wrote:

When I visit this site:

https://openai.com/gpt-5/

a video starts playing, and the process 'RDD Process' appears in 'top'
(linux command line) and the usage goes up from 90% to over 100%. Also,
when I click the try gpt-5, it does not launch gpt-5, but instead stays
on 4. I don't see these problems with Brave.

According to Chat-gpt this process is a sandbox video playing
process. But when I pause the video it still uses over 100% cpu.

I set media.autoplay.blocking_policy = 2 but the video still plays
without asking.

The only way I know to check which version of chat-gpt is in use is to
ask it. Version 5 confirms itself.

Debian GNU/Linux 12
Debian 6.1.140-1 (2025-05-22) x86_64 GNU/Linux
Mozilla Firefox 128.13.0esr

From a search on "rdd process", I found:

https://askubuntu.com/questions/1483112/high-cpu-usage-by-a-firefox-subprocess-called-rdd-process

Go into about:config and set media.rdd = false. Without the media
getting funneled through the sandboxed RDD process, if the video process crashes then so does the web browser.

https://www.reddit.com/r/linux/comments/xcikym/tutorial_how_to_enable_hardware_video/

That mentions VA-API, and checking if hardware (GPU) acceleration is
enabled in about:config, but also mentions nVidia GPU's don't have
VA-API. You didn't mention your video card. RDD uses the GPU for
hardware acceleration.

https://en.wikipedia.org/wiki/Video_Acceleration_API

RDD uses the GPU for hardware acceleration. I found an article that
mentions how to ensure it is enabled in FF at:

https://discourse.ubuntu.com/t/enabling-accelerated-video-decoding-in-firefox-on-ubuntu-21-04/22081

Thanks, that (about:config webrender) has reduced the processing. What's puzzling though is in Firefox settings it has:

[x] Use recommended performance settings
Learn more
These settings are tailored to your computerrCOs hardware and operating system.

And when I uncheck the box, it shows hardware acceleration enabled. So I
wonder if it is enabled when I don't uncheck the box, a bit like
wondering if the light is on in the fridge when the door is shut.

My GPU is:

00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT
Integrated Graphics Controller (rev 0b)

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From Newsgroup: alt.comp.software.firefox

On 08/08/2025 12:06, Richmond wrote:

When I visit this site:

https://openai.com/gpt-5/

Did you try watching the video on YouTube?

<https://www.youtube.com/live/0Uu_VJeVVfo>


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