Tried testing this issue on Ubuntu 14.04 using chrome stable #54.0.2840.100. The tool used in this case is chromeVox extension. 

I was unable to get any talkback related tool from accessibility of Ubuntu 14.04 and also i was unable to unmute the video at URL: https://output.jsbin.com/woqazehapo/quiet using chromeVox extension.

aghassemi@ - Could you please let us know the source to get the talkback tool?

This will help us in triaging the issue further.

Thanks...!!

TalkBack is the stock Screen Reader on Android (Settings->Accessibility). I do not believe there is desktop or emulator version of it.

The issue here is that the UI controls for the HTML5 video player hide after a second or two and become inaccessible by screen-readers. 

Please also note that TalkBack and VoiceOver (iOS stock screenreader) behave very differently when it comes to activating buttons/links than desktop SRs like ChromeVox or JAWS. For instance the common approach of putting DOM elements off-screen (e.g. left:-10000px, top:-10000px) does not work for buttons/links with TalkBack as TalkBack is unable to "click" off-screen buttons.

Thank you for providing more feedback. Adding requester "krajshree@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

aghassemi@ - As per comment #4, is it possible to check this issue on any HTML5 video player?
Is there any tool apart from talkbalk (as it is specific to android) to check this issue?

Thanks...!!

well, desktop Chrome displays the Controls when user tabs to them, so this may not be an issue with desktop screen-readers. With mobile Chrome, the controls are not displayed when the accessibility focus is moved to the element (a11y focus != DOM focus), so this becomes a big issue on mobile.

Thank you for providing more feedback. Adding requester "krajshree@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

As per comment #8, this issue seems to be related to android.

Could anyone from android team plz have a look into this issue.

Accessibility: Video Controls hide too fast due to that reason user can't know where the control bar is located. User need to double tap below the video screen to see the controls and then Immediately double click on unmute button to unmute the video. 
Here we observe one more issue after some time of video play it stop playing the video. This issue also repro on latest M58 chrome apk. 

Expected results: the video control bar should be visible to user to control the video.

Tested on Pixel XL / NOF27B

Please find the logcat, bugreport & video @ http://go/chrome-androidlogs1/7/667833

dmazzoni@ Could you please look into once. Thanks 

qinmin@ can you please provide an update? 

I no longer work on video, reassigning to liberato@

over to mlamouri@, who handles media ux these days.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a5439425dd127207c2fec3f358d1f329428d0b71

commit a5439425dd127207c2fec3f358d1f329428d0b71
Author: Mounir Lamouri <mlamouri@chromium.org>
Date: Wed Apr 11 05:29:15 2018

Media Controls: allow navigation with accessibility tools.

The media controls auto-hide mechanism breaks accessibility tools. This
prevents the controls from fully hiding when navigated with
accessibility tools. Instead of marking themselves as `display:none;`,
this only mark the controls as hidden and will show them again if the
user navigates trough them again. Similar to using a mouse.

Bug:  667833 
Change-Id: I7c2dbfd4b047e2955f6ffa9fb1a5f3bbe37878fd
Reviewed-on: https://chromium-review.googlesource.com/999637
Reviewed-by: Tommy Steimel <steimel@chromium.org>
Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Commit-Queue: Mounir Lamouri <mlamouri@chromium.org>
Cr-Commit-Position: refs/heads/master@{#549774}
[modify] https://crrev.com/a5439425dd127207c2fec3f358d1f329428d0b71/third_party/blink/renderer/modules/accessibility/ax_media_controls.cc
[modify] https://crrev.com/a5439425dd127207c2fec3f358d1f329428d0b71/third_party/blink/renderer/modules/accessibility/ax_media_controls.h
[modify] https://crrev.com/a5439425dd127207c2fec3f358d1f329428d0b71/third_party/blink/renderer/modules/media_controls/elements/media_control_elements_helper.cc
[modify] https://crrev.com/a5439425dd127207c2fec3f358d1f329428d0b71/third_party/blink/renderer/modules/media_controls/elements/media_control_elements_helper.h
[modify] https://crrev.com/a5439425dd127207c2fec3f358d1f329428d0b71/third_party/blink/renderer/modules/media_controls/elements/media_control_panel_element.cc
[modify] https://crrev.com/a5439425dd127207c2fec3f358d1f329428d0b71/third_party/blink/renderer/modules/media_controls/elements/media_control_panel_element.h
[modify] https://crrev.com/a5439425dd127207c2fec3f358d1f329428d0b71/third_party/blink/renderer/modules/media_controls/media_controls_impl.cc
[modify] https://crrev.com/a5439425dd127207c2fec3f358d1f329428d0b71/third_party/blink/renderer/modules/media_controls/media_controls_impl.h
[modify] https://crrev.com/a5439425dd127207c2fec3f358d1f329428d0b71/third_party/blink/renderer/modules/media_controls/media_controls_impl_test.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/30f4ec64291d1c7057dcd91b07f9f77a118dacda

commit 30f4ec64291d1c7057dcd91b07f9f77a118dacda
Author: Findit <findit-for-me@appspot.gserviceaccount.com>
Date: Wed Apr 11 06:48:08 2018

Revert "Media Controls: allow navigation with accessibility tools."

This reverts commit a5439425dd127207c2fec3f358d1f329428d0b71.

Reason for revert:

Findit (https://goo.gl/kROfz5) identified CL at revision 549774 as the
culprit for failures in the build cycles as shown on:
https://findit-for-me.appspot.com/waterfall/culprit?key=ag9zfmZpbmRpdC1mb3ItbWVyRAsSDVdmU3VzcGVjdGVkQ0wiMWNocm9taXVtL2E1NDM5NDI1ZGQxMjcyMDdjMmZlYzNmMzU4ZDFmMzI5NDI4ZDBiNzEM

Sample Failed Build: https://ci.chromium.org/buildbot/chromium.win/Win%207%20Tests%20x64%20%281%29/36918

Sample Failed Step: webkit_unit_tests

Original change's description:
> Media Controls: allow navigation with accessibility tools.
> 
> The media controls auto-hide mechanism breaks accessibility tools. This
> prevents the controls from fully hiding when navigated with
> accessibility tools. Instead of marking themselves as `display:none;`,
> this only mark the controls as hidden and will show them again if the
> user navigates trough them again. Similar to using a mouse.
> 
> Bug:  667833 
> Change-Id: I7c2dbfd4b047e2955f6ffa9fb1a5f3bbe37878fd
> Reviewed-on: https://chromium-review.googlesource.com/999637
> Reviewed-by: Tommy Steimel <steimel@chromium.org>
> Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
> Commit-Queue: Mounir Lamouri <mlamouri@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#549774}

Change-Id: I24ff5ad8f2320562ad566b944d0126b8d2cf0c21
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug:  667833 
Reviewed-on: https://chromium-review.googlesource.com/1006535
Cr-Commit-Position: refs/heads/master@{#549795}
[modify] https://crrev.com/30f4ec64291d1c7057dcd91b07f9f77a118dacda/third_party/blink/renderer/modules/accessibility/ax_media_controls.cc
[modify] https://crrev.com/30f4ec64291d1c7057dcd91b07f9f77a118dacda/third_party/blink/renderer/modules/accessibility/ax_media_controls.h
[modify] https://crrev.com/30f4ec64291d1c7057dcd91b07f9f77a118dacda/third_party/blink/renderer/modules/media_controls/elements/media_control_elements_helper.cc
[modify] https://crrev.com/30f4ec64291d1c7057dcd91b07f9f77a118dacda/third_party/blink/renderer/modules/media_controls/elements/media_control_elements_helper.h
[modify] https://crrev.com/30f4ec64291d1c7057dcd91b07f9f77a118dacda/third_party/blink/renderer/modules/media_controls/elements/media_control_panel_element.cc
[modify] https://crrev.com/30f4ec64291d1c7057dcd91b07f9f77a118dacda/third_party/blink/renderer/modules/media_controls/elements/media_control_panel_element.h
[modify] https://crrev.com/30f4ec64291d1c7057dcd91b07f9f77a118dacda/third_party/blink/renderer/modules/media_controls/media_controls_impl.cc
[modify] https://crrev.com/30f4ec64291d1c7057dcd91b07f9f77a118dacda/third_party/blink/renderer/modules/media_controls/media_controls_impl.h
[modify] https://crrev.com/30f4ec64291d1c7057dcd91b07f9f77a118dacda/third_party/blink/renderer/modules/media_controls/media_controls_impl_test.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/c32bb93471e5b7e8f7ca85590ee54991d40a8a82

commit c32bb93471e5b7e8f7ca85590ee54991d40a8a82
Author: Mounir Lamouri <mlamouri@chromium.org>
Date: Thu Apr 12 08:13:03 2018

Reland "Media Controls: allow navigation with accessibility tools."

This is a reland of a5439425dd127207c2fec3f358d1f329428d0b71

The CL failed after CQ because another CL that landed a couple of
commits prior broke some assumptions made in the unit tests.

Original change's description:
> Media Controls: allow navigation with accessibility tools.
>
> The media controls auto-hide mechanism breaks accessibility tools. This
> prevents the controls from fully hiding when navigated with
> accessibility tools. Instead of marking themselves as `display:none;`,
> this only mark the controls as hidden and will show them again if the
> user navigates trough them again. Similar to using a mouse.
>
> Bug:  667833 
> Change-Id: I7c2dbfd4b047e2955f6ffa9fb1a5f3bbe37878fd
> Reviewed-on: https://chromium-review.googlesource.com/999637
> Reviewed-by: Tommy Steimel <steimel@chromium.org>
> Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
> Commit-Queue: Mounir Lamouri <mlamouri@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#549774}

TBR=dmazzoni@chromium.org, pfeldman@chromium.org

Bug:  667833 
Change-Id: I03bbe4858d456a9131b257ca709f7d8728e712f7
Reviewed-on: https://chromium-review.googlesource.com/1007075
Reviewed-by: Mounir Lamouri <mlamouri@chromium.org>
Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Commit-Queue: Mounir Lamouri <mlamouri@chromium.org>
Cr-Commit-Position: refs/heads/master@{#550096}
[modify] https://crrev.com/c32bb93471e5b7e8f7ca85590ee54991d40a8a82/third_party/blink/renderer/modules/accessibility/ax_media_controls.cc
[modify] https://crrev.com/c32bb93471e5b7e8f7ca85590ee54991d40a8a82/third_party/blink/renderer/modules/accessibility/ax_media_controls.h
[modify] https://crrev.com/c32bb93471e5b7e8f7ca85590ee54991d40a8a82/third_party/blink/renderer/modules/media_controls/elements/media_control_elements_helper.cc
[modify] https://crrev.com/c32bb93471e5b7e8f7ca85590ee54991d40a8a82/third_party/blink/renderer/modules/media_controls/elements/media_control_elements_helper.h
[modify] https://crrev.com/c32bb93471e5b7e8f7ca85590ee54991d40a8a82/third_party/blink/renderer/modules/media_controls/elements/media_control_panel_element.cc
[modify] https://crrev.com/c32bb93471e5b7e8f7ca85590ee54991d40a8a82/third_party/blink/renderer/modules/media_controls/elements/media_control_panel_element.h
[modify] https://crrev.com/c32bb93471e5b7e8f7ca85590ee54991d40a8a82/third_party/blink/renderer/modules/media_controls/media_controls_impl.cc
[modify] https://crrev.com/c32bb93471e5b7e8f7ca85590ee54991d40a8a82/third_party/blink/renderer/modules/media_controls/media_controls_impl.h
[modify] https://crrev.com/c32bb93471e5b7e8f7ca85590ee54991d40a8a82/third_party/blink/renderer/modules/media_controls/media_controls_impl_test.cc