[maemo-users] Recording calls

From: Thomas Wälti twaelti at gmail.com
Date: Mon Jan 18 15:55:32 EET 2010
The problem is to find a compromise between:
a) CPU/power usage
b) Encoding efficiency
c) Playback capability
d) API availability

Due to a) and d), I'm only looking at the gstreamer encoders available
on the N900. Du to c) I have dropped the ANB and AWB codecs from
evaluation - I was unable to quickly find a standard software for
playback on Windows (e.g. WMP or VLC bot failed)

Tonight, I'll try low bitrate AAC as it is probably a good compromise
between these factors. I will also try speex, as it's on the N900 by
default and technically ideally for encoding this kind of audio.
However, I'm not so sure about playback capability on Windows :-) Is
Speex on the N900 using the DSP? Because I guess that all NokiXXXenc
are, e.g. the AAC one.


On Mon, Jan 18, 2010 at 09:37, Harri Haataja <realblades at gmail.com> wrote:
> 2010/1/14 Kahlil Johnson <jzarecta at gmail.com>:
>> On Thu, Jan 14, 2010 at 9:01 AM, Dave Neary <dneary at maemo.org> wrote:
>>> Thomas Wälti wrote:
>>>> The documented method looks really hacky, IMHO the gstreamer based
>>>> method of Zaheer Abbas Merali (gst guru par excellence :-) posted in
>>>> http://talk.maemo.org/showpost.php?p=464494&postcount=50 should be the
>>>> way to go. Using nokiaaacenc, you could probably directly save as AAC
>> What about a real free format like OGG vorbis?
> Um.. speex?
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