Open Bug 1496567 Opened 2 years ago Updated 2 years ago

MP3 file plays with silent gaps (only in FF) when seeking using built-in player


(Core :: Audio/Video: Playback, defect, P2)

62 Branch



Tracking Status
firefox-esr60 --- wontfix
firefox62 --- wontfix
firefox63 --- wontfix
firefox64 --- wontfix
firefox65 --- fix-optional
firefox66 --- fix-optional


(Reporter: mozdev2, Unassigned, NeedInfo)



(Keywords: parity-chrome, parity-edge, regression)

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0

Steps to reproduce:

Visit this link:

Seek to 5 or 6 minutes in to the file using the built-in MP3 player.

Actual results:

Seeking to 5 or 6 minutes in results in silence.

This seems likely the same or similar to Bug #1337556 ( except that the silence does not end after 5 seconds for me: sometimes it takes 30 seconds or more. Playing from before the silent gap causes the gap to vanish and the audio plays normally. (Wasn't sure if I should comment on that bug or file a new bug here.)

Tested in on Kubuntu Linux (v62) and Win 8.1 (v62.0.3). (Didn't use a new profile.)

Expected results:

Downloading the MP3 file results in normal playback in e.g. VLC, with no trouble seeking.
Component: Untriaged → Audio/Video: Playback
OS: Unspecified → Linux
Product: Firefox → Core
Hardware: Unspecified → x86_64
I can also reproduce the problem on Nightly64.0a1 x64 Win10.

Regression range:

Regressed by: Bug 1309516

Your bunch of patch causes the regression, can you please look into this?
Blocks: 1309516
Ever confirmed: true
Flags: needinfo?(kakukogou)
OS: Linux → All
kaku no longer works here. jya, could you triage or delegate this?
Rank: 15
Flags: needinfo?(kakukogou) → needinfo?(jyavenard)
Priority: -- → P2
QA Contact: drno
QA Contact: drno
Jan, could you have a look please? thank you
Flags: needinfo?(jyavenard) → needinfo?(jh+bugzilla)
Not in the near future, though, as my queue of things to do is long enough as it is.
Happy to take a patch in nightly; if it seems low risk enough please feel free to request uplift to 65 beta.
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