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firefox + krpano video = very bad?

localhostroot

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Thursday, April 8th 2021, 5:50pm

firefox + krpano video = very bad?

Tested on a large number of different computers, there is one common problem.

360 video is very slow in the firefox browser. At the same time, it works great in other browsers (chrome, edge, even internet explorer). In firefox, it slows down even on very powerful PCs.

H264 or VP9 - it doesn't matter. It's about 4K (3840*1920).

Even 8K (7680*3840) plays perfectly in chrome, and even 3K (3072*1536) is very slow in firefox.

Is there any hope that the situation will improve?

localhostroot

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Tuesday, April 27th 2021, 4:34pm

Klaus , can you say something about this problem?

klaus.krpano

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Wednesday, April 28th 2021, 1:46pm

Hi,

the webgl video performance depends to 99% on the browser, the system and also the video itself.
The krpanos viewer has no influence on that.

Internally inside a browser it's about how to bring the decoded video frame to a texture that can be used for the rendering. Some browsers are better optimized and have more and faster GPU-to-GPU code-paths and some require a slow GPU-to-CPU-to-GPU code path. It can also depends on the video and color format of a particular video what code path the browser can use, but that's not documented anywhere (except in the browser source code) and can anytime change.

For more detailed information you can search and read in the Firefox bug-tracker, here some related links:
https://bugzilla.mozilla.org/show_bug.cgi?id=1191521
https://bugzilla.mozilla.org/show_bug.cgi?id=1193432
https://bugzilla.mozilla.org/show_bug.cgi?id=1307342
https://bugzilla.mozilla.org/buglist.cgi…rch=WebGL+video

Best regards,
Klaus

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