[gstreamer-bugs] [Bug 620323] New: mp3 playback does not respect lame gapless tags
GStreamer (bugzilla.gnome.org)
bugzilla at gnome.org
Tue Jun 1 17:44:01 PDT 2010
https://bugzilla.gnome.org/show_bug.cgi?id=620323
GStreamer | gst-plugins-ugly | 0.10.15
Summary: mp3 playback does not respect lame gapless tags
Classification: Desktop
Product: GStreamer
Version: 0.10.15
OS/Version: Linux
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: gst-plugins-ugly
AssignedTo: gstreamer-bugs at lists.sourceforge.net
ReportedBy: nyall at zombiepigs.net
QAContact: gstreamer-bugs at lists.sourceforge.net
GNOME target: ---
GNOME version: ---
Currently, gstreamer is ignoring the lame tags in mp3s during gapless playback.
These tags contain information about the padding at the start and end of the
files, which should be skipped to get perfect gapless playback of these files.
Without using these tags, there'll always be a tiny silence or glitch between
songs.
Here's an example of the lame tags in a file which should play back gaplessly:
$eyeD3 --lametag Track01.mp3
Track01.mp3 [ 3.77 MB ]
Encoder Version : LAME3.98r
LAME Tag Revision : 0
VBR Method : Variable Bitrate method2 (mtrh)
Lowpass Filter : 18500
Radio Replay Gain : -2.0 dB (Set automatically)
Encoding Flags : --nspsytune --nssafejoint
ATH Type : 4
Bitrate (Minimum) : 192
Encoder Delay : 576 samples
Encoder Padding : 960 samples
Noise Shaping : 1
Stereo Mode : Joint
Unwise Settings : False
Sample Frequency : 44.1 kHz
MP3 Gain : 0 (+0.0 dB)
Preset : V2
Surround Info : None
Music Length : 3.77 MB
Music CRC-16 : 07F9
LAME Tag CRC-16 : E5BF
The encoder delay and encoder padding tags describe how many samples were added
at the start and end of the audio to complete the frames. Some more information
is available on this page: http://gabriel.mp3-tech.org/mp3infotag.html
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