Bug 2012066

Summary:	Video files with ac3 audio open with ~ 20 s delay in vlc
Product:	[Fedora] Fedora	Reporter:	Otto Liljalaakso <otto.liljalaakso>
Component:	wireplumber	Assignee:	Peter Hutterer <peter.hutterer>
Status:	CLOSED ERRATA	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	35	CC:	fedora, peter.hutterer, wtaymans
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	wireplumber-0.4.4-2.fc35	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-28 18:27:28 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Otto Liljalaakso 2021-10-08 07:47:44 UTC

Description of problem:
If Wireplumber is used, as Fedora Linux 35 Beta does by default,
vlc has an about 20 second delay
when opening video files that have an AC3 audio track.

I have identified Wireplumber as having some role in this
by switching back to pipewire-media-session
as was used in Fedora 34.
The issue disappears when I do that and reboot.

More details are available at upstream issue:
https://gitlab.freedesktop.org/pipewire/wireplumber/-/issues/63

Version-Release number of selected component (if applicable):
0.4.2-1.fc35

How reproducible:
Always

Steps to Reproduce:
1. Install vlc from RPM Fusion
2. Download this example video: https://people.freedesktop.org/~wtay/DolbyDigitalBroadway.vob
3. Open the video with vlc: $ vlc DolbyDigitalBroadway.vob

Actual results:
Vlc starts,
showing black screen and 0% audio volume for about 20 seconds,
then video starts to play normally.

Expected results:
Video immediately starts to play.

Additional info:

Comment 1 Fedora Update System 2021-10-15 14:49:35 UTC

FEDORA-2021-3c4c454c98 has been submitted as an update to Fedora 35. https://bodhi.fedoraproject.org/updates/FEDORA-2021-3c4c454c98

Comment 2 Fedora Update System 2021-10-15 20:51:56 UTC

FEDORA-2021-3c4c454c98 has been pushed to the Fedora 35 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2021-3c4c454c98`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2021-3c4c454c98

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 3 Fedora Update System 2021-10-24 20:21:17 UTC

FEDORA-2021-3c4c454c98 has been submitted as an update to Fedora 35. https://bodhi.fedoraproject.org/updates/FEDORA-2021-3c4c454c98

Comment 4 Fedora Update System 2021-10-28 18:27:28 UTC

FEDORA-2021-3c4c454c98 has been pushed to the Fedora 35 stable repository.
If problem still persists, please make note of it in this bug report.