Audio Recorder

MP3 low quality encoding and wrong song duration in some players

Bug #1354973 reported by Michaël Nepyjwoda
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Audio Recorder
Fix Released
Undecided
Unassigned

Bug Description

Hi,

This is a proposal about MP3 encoding configuration:
- Quality: audio-recorder actually encodes into MP3 in a low quality (Varialbe Bit Rate about 48kbps). It would be nice to improve the MP3 encoding quality (VBR about 192Kbps) because this audio file format is very often used by number of person.
- Wrong song duration: This came from wrong Xing header data written in MP3 files by the id3v2mux pipeline.

The proposal to solve these two issues is to update the MP3 encoding line configuration in /src/media-profiles.c:34 from
"audio/x-raw,rate=44100,channels=2 ! lamemp3enc name=enc target=0 quality=6 ! xingmux ! id3v2mux"
to
"audio/x-raw,rate=44100,channels=2 ! lamemp3enc name=enc target=0 quality=2 ! xingmux ! id3mux"

Best regards,

Michaël

Revision history for this message
Michaël Nepyjwoda (michael-nepyjwoda) wrote :

I didn't mentioned that I'm talking about audio-recorder packaged for Ubuntu 14.04.

Revision history for this message
moma (osmoma) wrote :

Hello,

I will test the new pipeline.
"audio/x-raw,rate=44100,channels=2 ! lamemp3enc name=enc target=0 quality=2 ! xingmux ! id3mux"

Ref: http://bazaar.launchpad.net/~osmoma/audio-recorder/trunk/view/head:/src/media-profiles.c

Thanks for your help.

moma (osmoma)
Changed in audio-recorder:
status: New → Fix Committed
Revision history for this message
moma (osmoma) wrote :

This has been implemented in audio-recorder 1.5 for Ubuntu 14.10 (Utopic).
Please check the PPA.

Changed in audio-recorder:
status: Fix Committed → Fix Released
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