[Webkit-unassigned] [Bug 105125] New: Safari / HTML5 video no longer perfectly Frame Accurate

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=105125

           Summary: Safari / HTML5 video no longer perfectly Frame
                    Accurate
           Product: WebKit
           Version: 525.x (Safari 3.2)
          Platform: Macintosh Intel
               URL: http://www.youtube.com/watch?v=rsTkYvaqPY8
        OS/Version: Mac OS X 10.8
            Status: UNCONFIRMED
          Severity: Major
          Priority: P2
         Component: Media Elements
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: coenen.rob at gmail.com


I just updated my HTML5 / frame accuracy test ( http://www.rob-coenen.nl/lab/html5/frame_accuracy/ ).

-The H.264 video has been re-encoded using a baseline profile. This was done as Jae Park (cc:) pointed out that MS IE10 only supports proper frame accurateness with the baseline profile (higher profiles shift the SMPTE offset upon initialization to 00:00:00:01 or even 00:00:00:02)

However, this also causes Safari to mis-behave; as show in the screen capture video below

http://www.youtube.com/watch?v=rsTkYvaqPY8

Note how the calculated timecodes are off by 1 frame after I clicked the Jump to 00:00:12:21 button.

Please note that the Javascript that calculates the SMPTE codes have not been changed.

Tested with: 
Safari / Mac / Version 6.0.2 (8536.26.17)
Mac Software  OS X 10.8.2 (12C60)

Same problem with
WebKit Nightly WebKit-SVN-r137808

-- 
Configure bugmail: https://bugs.webkit.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.