1809251 - With Desktop mode YouTube videos go beyond the screen

Status: NEW

(Firefox for Android :: Media, defect, P3)

Description

[Christian Sadilek [:csadilek]]

From github: https://github.com/mozilla-mobile/fenix/issues/21119.

Steps to reproduce

1. open tab to desktop mode
2. go to YouTube and select any video on Android for mobile device.
3. select full screen

Expected behaviour

Video should play at full screen and fit to the screen size

Actual behaviour

YouTube video maximizes but it goes beyond the borders of the screen, accessing play controls involves scrolling down in the video while it is Fullscreened

Device name

Samsung Galaxy 10E and LG G Pad

Android version

Android 11 on Samsung, Android 7 on LG G Pad X 8.0

Firefox release type

Firefox 91.4 on both devices

Firefox version

Android 11 on Samsung Galaxy s10e Android 7 on LG tablet

Device logs

No response

Additional information

No response

┆Issue is synchronized with this Jira Task

Change performed by the Move to Bugzilla add-on.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:cpeterson, could you have a look please?

For more information, please visit auto_nag documentation.

Comment 2

[eclaudiu64]

Attachment: mobizen_20230603_145828.mp4

This issue also affects launching in Picture-in-Picture PIP, the video is not displayed. May also be related to this ticket: https://bugzilla.mozilla.org/show_bug.cgi?id=1828611

Comment 3

[eclaudiu64]

(In reply to eclaudiu64 from comment #2)

Created attachment 9337675 [details]
mobizen_20230603_145828.mp4

This issue also affects launching in Picture-in-Picture PIP, the video is not displayed. May also be related to this ticket: https://bugzilla.mozilla.org/show_bug.cgi?id=1828611

Comment 4

[Makoto Kato [:m_kato]]

When using dekstop mode, viewport isn't same as physical screen. So when using fullscreen, I guess that it will use dekstop mode's viewport, not physical device. This issue is same as Chrome (stable and Canary) as long as I test. We need to be design for this situation....

Comment 5

[Makoto Kato [:m_kato]]

This isn't high priority since we can resolve this by turning off desktop mode.

Comment 6

[eclaudiu64]

Attachment: mobizen_20230630_082725_001.mp4

(In reply to eclaudiu64 from comment #2)

Created attachment 9337675 [details]
mobizen_20230603_145828.mp4

This issue also affects launching in Picture-in-Picture PIP, the video is not displayed. May also be related to this ticket: https://bugzilla.mozilla.org/show_bug.cgi?id=1828611

(In reply to Makoto Kato [:m_kato] from comment #4)

When using dekstop mode, viewport isn't same as physical screen. So when using fullscreen, I guess that it will use dekstop mode's viewport, not physical device. This issue is same as Chrome (stable and Canary) as long as I test. We need to be design for this situation....

I have attached video showing that the video is streaming correctly in PIP in Chrome Stable, in the desktop version of Youtube, but in Firefox, the video is not displaying correctly in PIP, it can be seen in the video capture previously attached.

Comment 7

[Makoto Kato [:m_kato]]

I have attached video showing that the video is streaming correctly in PIP in Chrome Stable

I don't say PiP. Firefox's PiP mode depends on fullscreen. So we have to consider about fullscreen mode at first.

Comment 8

[djdisodo]

i think this is caused by https://bugzilla.mozilla.org/show_bug.cgi?id=1834184

this is a bug that makes webpage to have scale of mobile mode even if it's in desktop mode when using full screen

setting layout.css.devPixelsPerPx to some smaller value fixes this issue
(but this also affects scale of mobile mode)