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Starred by 2 users

Issue metadata

Status: WontFix
Owner:
Closed: Mar 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Mac
Pri: 2
Type: Bug-Regression



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MP4 replay is blurry with Media Source API

Reported by henryzha...@gmail.com, Oct 28 2016

Issue description

UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.71 Safari/537.36

Steps to reproduce the problem:
1.  Drag the vnc5.mp4 to Chrome Browser
2.  Watch the screen quality and you find the blurry screen. 

What is the expected behavior?
The  quality of screen should be good. 

What went wrong?
Screen is blurry.
I  create the screen shot for comparison.
The image file name ending with "WITHOUT_H264" shows the normal case.
But ending with "WITH_H264" shows the blurry case.

Did this work before? Yes Chrome 49.

Does this work in other browsers? Yes

Chrome version: 54.0.2840.71  Channel: stable
OS Version: OS X 10.11.4
Flash Version: Shockwave Flash 23.0 r0
 
vnc5.MP4
5.5 MB View Download
Chrome_50_With_H264.PNG
69.6 KB View Download
Chrome_50_Without_H264.PNG
28.8 KB View Download
Components: Internals>Media
Cc: rbasuvula@chromium.org
Labels: Needs-Feedback
Tested the issue in chrome #54.0.2840.71 on MAC 10.11.6 and 10.12 and not able to reproduce the issue.Could you please provide the more information(Like:URL/HTML file) which you have faced the problem which would help us to triage the issue further.

Thanks in Advance. 
I am going to post a HTML page by the end of this week. Keep tuned.
It is not reproducible on all the Chrome browser but on some.
@rbasuvula

I can share you a project that include a small web server to serve and parse the MP4 data.
But it is too big to attache it here.
What is the best way to share with you.
I am also seeing this problem in a Windows environment:

Chrome version: 54.0.2840.71  Channel: stable
OS Version: 10.0.14393 Build 14393

Project Member

Comment 6 by sheriffbot@chromium.org, Nov 12 2016

Labels: -Needs-Feedback Needs-Review
Owner: rbasuvula@chromium.org
Thank you for providing more feedback. Adding requester "rbasuvula@chromium.org" for another review and adding "Needs-Review" label for tracking.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Comment 7 by rbyers@chromium.org, Nov 14 2016

Cc: rbyers@chromium.org
Labels: -Needs-Review Needs-Feedback
Owner: ----
I tried the original repro instructions on Mac Chrome 54.0.2840.71 but don't see an obvious issue - the video looks sharp to me (though there's no calculator in the video so I can't compare it directly to the screenshots).

henryzhang86@ can you still reproduce this in current Chrome builds on Mac?  And can you reproduce simply by opening that video instead of Chrome (i.e. the server components you mentioned aren't necessary)?


Hi,
I'd like to send you a simple project to reproduce it. I do believe Chrome handles it differently between dragging a MP4 to Chrome and using MediaSource API to display it.

The project is around 200M to 300M since it includes a big MP4 files. Could you let me know the best way to send it to you.
Project Member

Comment 9 by sheriffbot@chromium.org, Nov 29 2016

Labels: -Needs-Feedback Needs-Review
Owner: rbyers@chromium.org
Thank you for providing more feedback. Adding requester "rbyers@chromium.org" for another review and adding "Needs-Review" label for tracking.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
Status: Assigned (was: Unconfirmed)
Mac triage marking assigned to rbyers@
Owner: ----
Status: Untriaged (was: Assigned)
Sorry I was just the blink bug triager.  If it's non-trivial to reproduce this then an expert from the media team should take a look.  I suggest you share the project on Google Drive or a similar service and include a link here (or if it cannot be public, whoever picks this up from the media team can give you their e-mail address).
Labels: Needs-Feedback
Owner: sande...@chromium.org
Status: Assigned (was: Untriaged)
Labels: -Needs-Review
Cleaning up sheriffbot label "Needs-Review" label as a part of modified "Needs-Feedback" sheriffbot rule. [ref bug for cleanup 684919]
Status: WontFix (was: Assigned)
Closing due to no reproduction case. Please re-open if you can provide reproduction materials.

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