Bug 210973

Summary:	[Gtk] Sound is distorted on Dailymotion videos
Product:	WebKit	Reporter:	Guilaume Ayoub <guillaume.webkit>
Component:	WebKitGTK	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	aperez, bugs-noreply, mcatanzaro, pnormand
Priority:	P2
Version:	WebKit Nightly Build
Hardware:	PC
OS:	Linux

Description Guilaume Ayoub 2020-04-24 08:35:12 PDT

On Dailymotion, sound is distorded for all videos. Even if the sound speed is OK, it is low-pitched as if it was played in a slow motion video.

The problem appears on dailymotion.com, but also on embedded videos (for example on https://www.lequipe.fr/Tennis/Actualites/Wtf-l-odeur-qui-manque-a-la-joueuse-de-tennis-kristie-ahn/1129152).

Reading only the video (without the JS player) works correctly on Epiphany (https://proxy-022.ix7.dailymotion.com/sec(NktLGdW_NTowTcekQRNIL6SuTq03r2HZp_B_m_mcrbafG1O-N5Y8rBKzn4TQGk8l2kqMgxfMXNVH4KrgizXBOaApwUs0l3GBQmhkzZRITvg)/video/286/007/472700682_mp4_h264_aac_hd.m3u8#cell=core&qos_vpart=1&qos_stail=1&ab_betamark=4).

I’m have:
- WebKitGTK 2.28.1
- Epiphany 3.36.0
- GStreamer 1.16.2

I’ve had the problem for a long time (probably more than 2 years).

Comment 1 Philippe Normand 2020-04-28 01:57:44 PDT

Do you use PulseAudio?
Audio playback works as expected in other apps such as the GNOME Videos thing?

Comment 2 Guilaume Ayoub 2020-04-28 04:34:23 PDT

(In reply to Philippe Normand from comment #1)
> Do you use PulseAudio?

I do.

> Audio playback works as expected in other apps such as the GNOME Videos
> thing?

It works perfectly everywhere else. I have no problems with other GNOME software, and other videos (on YouTube for example) work well on Epiphany.

As the Dailymotion video streams play well without the JS player, I suppose that the problem comes from Dailymotion’s JS.

Comment 3 Guilaume Ayoub 2020-07-29 05:19:47 PDT

The bug is fixed for me now. I don’t know if it’s because of a new version of WebKit, or because DailyMotion’s JS has changed.

Comment 4 Adrian Perez 2020-07-29 05:28:51 PDT

(In reply to Guilaume Ayoub from comment #3)
> The bug is fixed for me now. I don’t know if it’s because of a new version
> of WebKit, or because DailyMotion’s JS has changed.

My guess would have been the fixes to the GStreamer media backend; we have
had a flurry of those in the last months… At any rate, thanks a lot for
stopping by and closing the bug :-)