[Webkit-unassigned] [Bug 260798] New: mediaTime reported using requestVideoFrameCallback is not accurate on iOS

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=260798

            Bug ID: 260798
           Summary: mediaTime reported using requestVideoFrameCallback is
                    not accurate on iOS
           Product: WebKit
           Version: Safari 16
          Hardware: iPhone / iPad
                OS: iOS 16
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: kevin.dorion at gmail.com

Created attachment 467458

  --> https://bugs.webkit.org/attachment.cgi?id=467458&action=review

Side-by-side comparison of the mediaTime precision (MacOS Chrome vs iOS Safari)

On iOS devices, the mediaTime reported when listening to requestVideoFrameCallback is not accurate (floating point issue).
On desktops and other devices, the mediaTime is exactly accurate with what is reported by ffmpeg.
Please see the attachment for a side-by-side comparison of the same frame on Chrome Version 116.0.5845.110 and iPhone 16.2
Reproducible on https://web.dev/requestvideoframecallback-rvfc/

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