Bug 322167

Summary:	Analyzer has low framerate with FLAC files (AudioDataOutput issue)
Product:	[Unmaintained] phonon-backend-gstreamer	Reporter:	Daniel Cohen <analoguecolour>
Component:	general	Assignee:	Rohan Garg <rohan>
Status:	RESOLVED UNMAINTAINED
Severity:	normal	CC:	amarok-bugs-null, myriam, romain.perier, sitter, tdfischer, TheCrasher
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	4.7
Platform:	Compiled Sources
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Daniel Cohen 2013-07-09 21:43:32 UTC

On certain tracks, the spectrum analyser has a low framerate rendering it inaccurate/wrong and unattractive.

Reproducible: Sometimes

Steps to Reproduce:
1. play problematic track
Actual Results:  
spectrum analyser may have low framerate

Expected Results:  
framerate should be normal

I can't consistently find out what is causing it, but have only had it occur with .flac files, and no .mp3 files.

It's probably not a kbps/size issue, because my high quality ~3000kbps 24bit 96khz flacs that weigh in at 1-3GB per album are fine.

The compression of the flac doesn't seem to affect it either, as these are all max compression flacs.

Comment 1 Mark Kretschmann 2013-07-10 13:09:44 UTC

After discussing with Torry Fischer, I found that this is likely a Phonon-GStreamer issue with AudioDataOutput. Reassigning the report.

Comment 2 Harald Sitter 2013-07-10 18:15:48 UTC

if you run the following:

gst-launch-0.10 filesrc location="$INSERFILEPATHHERE" ! decodebin2 name=dec ! audioresample ! audioconvert ! libvisual_lv_analyzer ! video/x-raw-rgb,width=640,height=360,framerate=25/1 ! ffmpegcolorspace ! queue ! xvimagesink

does the analyzer look correct?
also does it look equally wrong if you try to play the file with dragon player?

Comment 3 Daniel Cohen 2013-07-10 18:38:29 UTC

Analyser seems to look correct with that command.

Equally low-fps on dragon player.

Comment 4 Justin Zobel 2021-03-09 22:36:13 UTC

Thank you for the bug report.

As this report hasn't seen any changes in 5 years or more, we ask if you can please confirm that the issue still persists.

If this bug is no longer persisting or relevant please change the status to resolved.

Comment 5 Nate Graham 2022-11-24 02:29:51 UTC

This backend for Phonon is no longer maintained or supported, and has not been for quite some time. Please use the VLC backend instead--which is the recommended and maintained replacement--and see if you can reproduce the issue there. If you can, please open a new bug report at https://bugs.kde.org/enter_bug.cgi?product=phonon-backend-vlc.

Thanks a lot!