UI - Playback rate is not updated in src mode

[avelad]

Have you read the FAQ and checked for duplicate open issues? Yes

What version of Shaka Player are you using? Nightly

Can you reproduce the issue with our latest release version? No

Can you reproduce the issue with the latest code from master? Yes

Are you using the demo app or your own custom app? Demo
What browser and OS are you using? Safari 13.1 macOS Catalina

For embedded devices (smart TVs, etc.), what model and firmware version are you using?

What are the manifest and license server URIs?

https://storage.googleapis.com/shaka-demo-assets/angel-one-hls/hls.m3u8

What did you do?

Load the previous stream in Safari (use native playback)
Change the playback rate in the UI

What did you expect to happen?
The playback rate mark is updated to the selection

What actually happened?

The playback rate mark is not updated to the selection but the playback rate in the video is changed

[joeyparrish]

@avelad, can you help us debug this? Try adding a listener to the video element first to see if the ratechange event is firing? That's what our UI listens for.

const video = document.querySelector('video');
video.addEventListener('ratechange', () => console.log('ratechange', video.playbackRate));

Thanks!

[avelad]

I just tried in Chrome 80 and it doesn't work

[avelad]

Url to test in Chrome:
https://nightly-dot-shaka-player-demo.appspot.com/demo/#audiolang=es;textlang=es;uilang=es;asset=https://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4;panel=ALL_CONTENT;panelData=HLS;build=uncompiled

@joeyparrish the event is fired but the UI is not updated

[joeyparrish]

Excellent! Thanks for the help. I didn't think to use an mp4 to trigger src= playback in Chrome, and I had assumed this was an issue only with Safari. But if it's failing in Chrome, too, it's probably not a browser-specific quirk.

I can confirm this issue in ChromeOS 80.

[joeyparrish]

I found the issue. We're actually listening for a secondary ratechange event from the Player, since the Player uses playbackRate to manage buffering states. The setup for that is broken in the src= path specifically.