Bug 192540 – [GStreamer] Can't replay blob videos in web.whatsapp.com

• Status: RESOLVED
• Resolution: FIXED
• Component: Media

[André Costa]

When I try to play animated GIFs or videos through Whatsapp Web interface on Epiphany, they play just the first time, further attempts fail (the multimedia controls appears, but are not responsive, and the video/GIF image is replaced by a white square).

I am on Fedora 29, these are the relevant packages installed:

webkit2gtk3-plugin-process-gtk2-2.22.4-1.fc29.x86_64
webkit2gtk3-2.22.4-1.fc29.x86_64
webkit2gtk3-jsc-2.22.4-1.fc29.x86_64
gstreamer1-libav-1.14.3-1.fc29.x86_64
gstreamer-plugins-base-0.10.36-18.fc27.x86_64
gstreamer1-plugins-ugly-1.14.3-1.fc29.x86_64
gstreamer1-plugins-good-1.14.4-1.fc29.x86_64
gstreamer1-plugins-base-1.14.4-1.fc29.x86_64
gstreamer-0.10.36-18.fc27.x86_64
gstreamer1-1.14.4-1.fc29.x86_64
gstreamer1-plugins-good-gtk-1.14.4-1.fc29.x86_64
gstreamer-plugins-bad-free-0.10.23-47.fc29.x86_64
gstreamer-tools-0.10.36-18.fc27.x86_64
PackageKit-gstreamer-plugin-1.1.12-1.fc29.x86_64
gstreamer1-plugins-bad-1.14.4-2.fc29.x86_64

Please let me know if I can provide any additional info.

[Michael Catanzaro]

This has been happening for at least half a year or so, on normal non-YouTube video elements. It's not reliably reproducible for me but happens maybe 50% of the time.

[Michael Catanzaro]

(In reply to Michael Catanzaro from comment #1)
> This has been happening for at least half a year or so, on normal
> non-YouTube video elements. It's not reliably reproducible for me but
> happens maybe 50% of the time.

i.e. this is definitely not specific to Whatsapp.

[Alicia Boya García]

This is a known bug in the current MSE implementation.

[Michael Catanzaro]

Could it be related to bug #192530? I have a feeling a LOT of our weird problems video problems could be related to that issue.

[Michael Catanzaro]

(In reply to Alicia Boya García from comment #3)
> This is a known bug in the current MSE implementation.

Any plans to fix it? This is really bad.

[Alicia Boya García]

(In reply to Michael Catanzaro from comment #5)
> (In reply to Alicia Boya García from comment #3)
> > This is a known bug in the current MSE implementation.
> 
> Any plans to fix it? This is really bad.

Yes. I'm taking this in mind in my rework of the playback pipeline, but that is a long task.

[Philippe Normand]

Is this really a MSE issue? At least audios are played using <audio> here, over blob: URIs. See bug 211627.

[Philippe Normand]

Created attachment 399252 [details]
Patch

[EWS]

Committed r261680: <https://trac.webkit.org/changeset/261680>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 399252 [details].

[Radar WebKit Bug Importer]

<rdar://problem/63219296>