[gstreamer-bugs] [Bug 160179] New: Clicks inserted into mulawenc encoded output
bugzilla-daemon at bugzilla.gnome.org
bugzilla-daemon at bugzilla.gnome.org
Wed Dec 1 22:39:49 PST 2004
http://bugzilla.gnome.org/show_bug.cgi?id=160179
GStreamer | gst-plugins | Ver: 0.8.6
Summary: Clicks inserted into mulawenc encoded output
Product: GStreamer
Version: 0.8.6
Platform: Other
OS/Version: Linux
Status: UNCONFIRMED
Severity: major
Priority: Normal
Component: gst-plugins
AssignedTo: gstreamer-bugs at lists.sourceforge.net
ReportedBy: jeff at ollie.clive.ia.us
QAContact: gstreamer-bugs at lists.sourceforge.net
Transcode an audio file using the following command:
gst-launch filesrc location="restore-donormessage1.wav" ! wavparse !
audioconvert ! audioscale ! mulawenc ! audio/x-mulaw,channels=1,rate=8000 !
filesink location="restore-donormessage1.ulaw"
The resulting file has a series of regular clicks where it appears that mulawenc
is replacing data in the output stream with null bytes. A similar problem can
be seen if I had used alawenc or gsmenc.
Source file: http://svr1.ocjtech.us/restore-donormessage1.wav
Result file: http://svr1.ocjtech.us/restore-donormessage1.ulaw
Here is a screenshot that compares the files in Audacity:
http://svr1.ocjtech.us/Screenshot-restore-donormessage1.png
I imported both the source file and the result file into Audacity. I then
duplicated the result file track and shifted the duplicate track to the right by
about 2.4s.
I'm using the gstreamer yum repository.
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