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Issue 676621 link

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Issue metadata

Status: Duplicate
Merged: issue 33099
Owner: ----
Closed: Dec 2016
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Windows , Mac
Pri: 2
Type: Bug



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VIDEO REVERSE SUPPORT

Reported by jasonvil...@gmail.com, Dec 22 2016

Issue description

Chrome Version       : ALL
URLs (if applicable) :
Other browsers tested:
  Add OK or FAIL, along with the version, after other browsers where you
have tested this issue:
     Safari: FAIL
    Firefox: FAIL
         IE: FAIL

What steps will reproduce the problem?
(1) Try to play a video in reverse at any speed. (-0.5, -1 etc)

What is the expected result?
Video should play back in reverse. (Like Apple Safari browsers)


What happens instead?
Nothing


Please provide any additional information below. Attach a screenshot if
possible.
This is a pretty powerful feature. Apple Safari has this feature.

 
Safari should read: OK
- Villmer
Cc: krajshree@chromium.org
Components: Internals>Media>Video
Labels: Needs-Feedback
Tried testing this issue in Mac 10.12.2, Win-10 and Ubuntu 14.04 using latest canary #57.0.2962.0.

Following are the steps followed to reproduce the issue.
------------
1. Navigated to youtube.com
2. Played a video.
3. Did not find any reverse play option.

jasonvillmer@ - Could you please be more elaborate on the reverse play option by providing a screen cast if possible.

This will help us in triaging the issue further....!!

Thanks...!!

I'm tremendously surprised that this issue has gone unresolved for such a long time. So,let me first thank you for taking the time to examine the issue. Second, to expedite a possible solutions, I have created a page demonstrating the issue. 


Demo page: http://www.villmer.com/playbackrate

If this page is viewed in Safari (MacOS or iOS), the negative (reverse) playback values will function properly. Meaning, the playbackRate of the video element will be set to a negative value and will play in reverse at that value. 

What should happen in Chrome: Video should play in reverse at the negative playbackRate value set.
What happens: NOTHING
Safari browsers, however, implement the negative playbackRate values properly.
For more information on the playbackRate rate, see http://www.w3schools.com/TAgs/av_prop_playbackrate.asp

The W3 Schools page indicates Chrome supports the negative values, however, ALL negative values do not work in Chrome.

Thanks,
Mr. Villmer
www.villmer.com

By the way, you can take a look at the source code to see how things are implemented.

- Mr. Villmer
Labels: -Pri-3 -Needs-Feedback M-57 OS-Linux OS-Mac OS-Windows Pri-2
Status: Untriaged (was: Unconfirmed)
jasonvillmer@ - Thanks a lot for your clarification...!!

Able to reproduce this issue on Mac 10.12.2, Win-10 and Ubuntu 14.04 using  latest canary #57.0.2963.0.

This is a non-regression issue as it is observed from M30 old builds. 

Hence, marking it as untriaged to get more inputs from dev team.

Thanks...!!
I'm glad you were able to see the issue. Look forward to seeing this fixed. 

Comment 7 by w...@chromium.org, Dec 27 2016

Mergedinto: 33099
Status: Duplicate (was: Untriaged)
Sorry, we're not planning to add support for negative playbackrate. See the linked bug for more details.
That's just stupid.

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