1844118 - video playback stuck randomly when watching live streaming

Status: RESOLVED WORKSFORME

(Core :: Audio/Video: Playback, defect)

Description

[matrikslee]

Attachment: firefox_ffmpeg_vaapi_decode_when_video_playback.log

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/115.0

Steps to reproduce:

1. launch firefox from shell via command: MOZ_LOG="PlatformDecoderModule:5" firefox 2>&1 | tee /tmp/ff.log

2. enter the live video stream website https://www.douyu.com/ and choose a live room to watch video streaming normally

my system info:
Operating System: Arch Linux
KDE Plasma Version: 5.27.6
KDE Frameworks Version: 5.108.0
Qt Version: 5.15.10
Kernel Version: 6.3.11-arch1-1-lily (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 5600X 6-Core Processor
Memory: 31.2 GiB of RAM
Graphics Processor: AMD Radeon RX 6900 XT
Manufacturer: ASUS

software versions:
firefox 115.0.2-1
mesa 23.1.3-2
ffmpeg 2:6.0-8

attachment log is obtained via launching firefox with environment variable MOZ_LOG="PlatformDecoderModule:5" via zstd compressed(raw 338M)

Actual results:

video playback stuck randomly

Expected results:

video playback shall run normally always

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Audio/Video: Playback' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[Paul Adenot (:padenot)]

Reporter, how frequent are those pauses, does your experience match bug 1843679?

Comment 3

[matrikslee]

(In reply to Paul Adenot (:padenot) from comment #2)

how frequent are those pauses,
It used to be very frequent (probably near version 113), even continuously several times in 5-minutes,
but the frequency has recently decreased, sometimes it stops one time in minutes, but sometimes It takes half an hour to an hour to reproduce the problem

does your experience match bug 1843679?
not match. in my case, video is all using h.264 codec
I have encountered a case where the video stops but the sound continues before, but recently if there is a problem, both the video and the sound will stop, it always cannot recover from stopped status

Comment 4

[Paul Adenot (:padenot)]

Thanks for the details. When this happens, please capture media logs like so: https://paul.cx/public/about-logging-presentation.webm and then click share on the top right and either send the profile privately to <[e-mail]>, or paste the link here, that will help us understand what's going on.

Comment 5

[matrikslee]

sorry, it seems that the problem has not been reproduced since the last time it was reported. I also don't know what caused this change, firefox's verison is always 115.0.2-1

Comment 6

[Martin Stránský [:stransky] (ni? me)]

Okay, let's close it then.
Thanks.