1319687 - Fire 'canplaythrough' aggressively after loading first frame

Status: NEW

(Core :: Audio/Video: Playback, defect, P3)

Description

[JW Wang [:jwwang] [:jw_wang]]

Some sites expect 'canplaythrough' to start playback. We should switch readyState to HAVE_ENOUGH_DATA after loading first frame to fire 'canplaythrough'.

Comment 1

[JW Wang [:jwwang] [:jw_wang]]

This also reduce the chance that some sites work on Chrome but look broken on FireFox.

Comment 2

[Jean-Yves Avenard [:jya]]

Which site would to that?

sounds more like a evangelism to me...

always switching to HAVE_ENOUGH_DATA when we won't be able to play without interruption would be breaking the specs.

Comment 3

[JW Wang [:jwwang] [:jw_wang]]

https://cs.chromium.org/chromium/src/content/renderer/media/webmediaplayer_ms.cc?rcl=0&l=609

This is what Chrome does which doesn't seem to worry about breaking specs.

Comment 4

[JW Wang [:jwwang] [:jw_wang]]

(In reply to Jean-Yves Avenard [:jya] from comment #2)
> Which site would to that?

Bug 1299609 comment 12.
Bug 1308717 comment 1.

Comment 5

[Jean-Yves Avenard [:jya]]

seems to me that it's the behaviour of preload=metadata we should change...

Having said that, those sites were not spec compliant... not sure this is something we want to fix

Comment 6

[JW Wang [:jwwang] [:jw_wang]]

Be pedantic when we can and be pragmatic when we have to. Sometimes those sites just conclude FF is broken and turn to Chrome before evangelism prevails.

Comment 7

[Dennis Schubert [:denschub]]

Ksenia, is the site linked still showing that issue?

Comment 8

[Ksenia Berezina [:ksenia]]

Yeah, this is still an issue. Setting webcompat priority as P3 for now as we've only got one report.