Bug 175521 – Playing YouTube videos keeps stalling

• Component: WebKit Misc.
• Status: NEW

[John Tsombakos]

When trying to play any video on YouTube, at some point it will just stall, with YouTube then showing an spinner on the video. Trying to stop and start the video has no affect. Reloading the page will continue the video, but it will eventually stall again.

[Brady Eidson]

I cannot reproduce this.

Can you attach a brief screen recording from loading a YouTube URL until the spinner comes up?
Do you see anything in the inspector console?

[Alexey Proskuryakov]

This bug currently says that this is Safari Technology Preview on OS X 10.10, which doesn't exist.

Please clarify which OS version and Safari/WebKit you can reproduce this with.

[John Tsombakos]

whoops my bad - it's 10.12.6 (16G29)

And I'm still working on catching a screen recording.

Thanks

[John Tsombakos]

I'm still seeing this issue on the latest MacOS (High Sierra) and Safari Tech Preview (Release 43 (Safari 11.1, WebKit 13605.1.12)

YouTube videos will stall with just a spinner, with errors in the console. ("Failed to load resource" over and over)

Also, trying to watch a pre-recorded Twitch video will play for a few seconds to a few minutes, then the page will reload and the video player will just be black. Have to reload the page to start it again.

To reproduce, open any YouTube video and click play. It will stall eventually.

[Jer Noble]

(In reply to johnt519 from comment #4)
> I'm still seeing this issue on the latest MacOS (High Sierra) and Safari
> Tech Preview (Release 43 (Safari 11.1, WebKit 13605.1.12)
> 
> YouTube videos will stall with just a spinner, with errors in the console.
> ("Failed to load resource" over and over)
> 
> Also, trying to watch a pre-recorded Twitch video will play for a few
> seconds to a few minutes, then the page will reload and the video player
> will just be black. Have to reload the page to start it again.
> 
> To reproduce, open any YouTube video and click play. It will stall
> eventually.

I cannot reproduce this locally either, though we have a very fast internet connection here, so if this stalling issue is related to your own network speed and/or setup, we will never be able to reproduce this.

To re-iterate Brady's request, would you please post a screen recording and screenshot of the inspector network tab while reproducing?

[John Tsombakos]

Created attachment 326901 [details]
youtube screenshot

[John Tsombakos]

Created attachment 326902 [details]
youtube screenshot 2

[John Tsombakos]

Created attachment 326903 [details]
youtube screenshot 3

[John Tsombakos]

Created attachment 326904 [details]
Playing video screenshot

Here's one when I try to play a video

[John Tsombakos]

Here's what in the console when I tried to play the video (https://www.youtube.com/watch?v=onIsJLkcMVY&pbjreload=10). I cleared it right before I clicked from the youtube home page.

[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] XMLHttpRequest cannot load https://www.youtube.com/youtubei/v1/log_event?alt=json&key=AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8 due to access control checks.
	Hh (desktop_polymer.js:912:326)
	Fh (desktop_polymer.js:899)
	Mh (desktop_polymer.js:910)
	ti (desktop_polymer.js:945:358)
	qi (desktop_polymer.js:930:333)
	onUnload_ (desktop_polymer.js:5662:92)
	onUnload_
[Error] XMLHttpRequest cannot load https://www.youtube.com/youtubei/v1/log_event?alt=json&key=AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8 due to access control checks.
	Hh (desktop_polymer.js:912:326)
	Fh (desktop_polymer.js:899)
	Mh (desktop_polymer.js:910)
	ti (desktop_polymer.js:945:358)
	qi (desktop_polymer.js:930:333)
	onUnload_ (desktop_polymer.js:5662:92)
	onUnload_
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Warning] paper-tooltip: – "fade-in-animation" – "not found!" (desktop_polymer.js, line 18)
[Warning] paper-tooltip: – "fade-out-animation" – "not found!" (desktop_polymer.js, line 18)
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Warning] paper-tooltip: – "fade-in-animation" – "not found!" (desktop_polymer.js, line 18)
[Warning] paper-tooltip: – "fade-out-animation" – "not found!" (desktop_polymer.js, line 18)
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Error] Failed to load resource
[Warning] paper-tooltip: – "fade-in-animation" – "not found!" (desktop_polymer.js, line 18)
[Warning] paper-tooltip: – "fade-out-animation" – "not found!" (desktop_polymer.js, line 18)
[Warning] paper-tooltip: – "fade-in-animation" – "not found!" (desktop_polymer.js, line 18)
[Warning] paper-tooltip: – "fade-out-animation" – "not found!" (desktop_polymer.js, line 18)
[Error] Failed to load resource

[John Tsombakos]

Update.. latest Safari Tech Preview still has major issues playing Twitch.tv videos. Freezes playback, show spinning cursor.. all but unresponsive.