Open Bug 2038120 Opened 1 month ago Updated 1 month ago

vms-mg.ucanr.edu - "No video with supported format and MIME type found" error is displayed

Categories

(Web Compatibility :: Site Reports, defect, P3)

Product:
Web Compatibility
Component:
Site Reports
Platform:
Desktop
Windows 10
Type:
defect

Tracking

(Webcompat Priority:P3, Webcompat Score:2, firefox150 affected, firefox151 affected, firefox152 affected)

Project Flags:
Webcompat Priority P3
Webcompat Score 2
Tracking Flags:
Tracking Status
firefox150 --- affected
firefox151 --- affected
firefox152 --- affected

People

(Reporter: bfarkas, Unassigned)

References

(Depends on 1 open bug,
URL
)

Details

(Keywords: webcompat:platform-bug, webcompat:site-report, Whiteboard: [webcompat-source:web-bugs])

User Story

platform:windows
impact:content-missing
configuration:common
affects:all
branch:release
diagnosis-team:media
user-impact-score:10.5

Attachments

(1 file)

No supported video Nightly vs Chrome
264.93 KB, video/mp4
Details

Environment:
Operating system: Windows 10
Firefox version: Firefox 150.0 / Firefox Nightly 152.0a1 (2026-05-07)

Steps to reproduce:

  1. Access: https://vms-mg.ucanr.edu/files/mg/documents/6135PCMG_ONLY_-_VMS-_Categories,_Event_Form,_Tutorial,_etc.109349.mp4
  2. Observe the page

Expected Behavior:
The page is displayed accordingly and the video can be played

Actual Behavior:
"No video with supported format and MIME type found" error message is displayed instead of the media player with the video

Notes:

  • Reproduces regardless of the status of ETP
  • Reproduces in firefox-nightly, and firefox-release
  • Does not reproduce in chrome

Created from https://github.com/webcompat/web-bugs/issues/219619

Since nightly and release are affected, beta will likely be affected too.
For more information, please visit BugBot documentation.

status-firefox151: --- → affected
Severity: -- → S4
User Story: (updated)
Webcompat Priority: --- → P3
Webcompat Score: --- → 2
Keywords: webcompat:needs-diagnosis
Priority: -- → P3
User Story: (updated)
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