[Functionnality] Codec settings

Bug #695020 reported by FM33
This bug affects 2 people
Affects Status Importance Assigned to Milestone
Audio Recorder Applet (OLD!)

Bug Description


It would be very useful to be able to set bitrate for ogg and mp3 formats.
Great program, expected for a long time on linux. Waiting by recording in FLAC and transcoding with another application.

Revision history for this message
moma (osmoma) wrote :

The recorder gets ready-made pipelines from GNOME's GConf regisitry. Please start gconf-editor
$ gconf-editor
and browse to System -> gstreamer -> audio -> profiles.

There you will find default pipelines for various audio formats (mp3, ogg, etc). The recorder uses these.

Here is a sample command that records from pulsesrc to test1.ogg.

$ gst-launch pulsesrc ! queue ! audioconvert ! audio/x-raw-float,rate=44100,channels=2 ! vorbisenc name=enc quality=0.5 ! oggmux ! filesink name=output-sink location=test1.ogg

And I can see that the quality=0.5 parameter is added to the pipeline.

Gst-inspect command can tell us more about the ogg (vorbisenc) encoder.
$ gst-inspect vorbisenc
quality: Specify quality instead of specifying a particular bitrate, -0.1 - 1.0.

Similarly the MP3 encoder has also a quality parameter.
$ gst-inspect lamemp3enc
quality: VBR Quality from 0 to 10, 0 being the best.

It seems that the quality (or bitrate) value can be fairly easily implemented to the GUI.

BTW: There will not be new versions of rec-applet. Why?
Because (AFAIK) neither Ubuntu's Unity Desktop nor GNOME 3.0 Shell will have toolbar-applets.
So I have planned to give rec-applet a new name;. It will be "audio-recorder". It will also have many new features.
Here is a preliminary picture of the new audio-recorder: http://bildr.no/view/791855

moma (osmoma)
Changed in rec-applet:
assignee: nobody → moma (osmoma)
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