Hi,
*About me*
I'm new to Asterisk. I've compiled 13.6 and I've been using that. I've
managed to get a bunch of different functionality working and I'm quite
pleased with it so far. Thanks to everyone who has contributed to it!
Here are some things I noticed, comments/problems/suggestions, which may
be useful?
*file convert ... g726-32 problems:*
`file convert foo.bar foo.g726-32` is extremely fussy about what files
it will convert.
It seemed to work fine converting the example file: `file convert
tt-weasels.ulaw tt-weasels.g726-32`
But when it came to converting an actual piece of music (for moh) I had
problems converting from these filetypes: wav wav16 mp3 ogg ilbc ulaw
alaw g722
I started with a normal mp3 file (44khz 160kbps mpeg1 layer 3 stereo),
then converted it to wav as follows:
sox foo.mp3 -e signed-integer -c 1 -r 8000 out.wav
sox foo.mp3 -e signed-integer -c 1 -r 16000 out16.wav && rm out16.wav
out.wav16
From these 2 files, I was able to convert to every other format (that
I've tested with Asterisk), except g726-32
These are the errors I got trying `file convert foo.bar foo.g726-32`
where bar is one of (wav wav16 mp3 ogg ilbc ulaw alaw g722)
format_g726.c:143 g726_write: Invalid data length 39, should be multiple
of 40
format_g726.c:143 g726_write: Invalid data length 39, should be multiple
of 20
format_g726.c:143 g726_write: Invalid data length 45, should be multiple
of 40
format_g726.c:143 g726_write: Invalid data length 128, should be
multiple of 40
In some cases I was able to convert mp3 to g726-32 but it was very fussy
with how the mp3 was encoded.
For example, when an mp3 was encoded like this, it was accepted:
lame --noreplaygain -b 560 foo.wav foo.mp3
This mp3 was rejected:
lame --noreplaygain -b 560 -q 0 foo.wav foo.mp3
But even once the mp3 that it would accept was converted "successfully"
with file convert, the music was all messed up.
The only source format that was *successfully* converted by `file
convert` to g726-32 was gsm.
However asterisk has no problem encoding a slin file to g726-32 during a
call.
-------------------------
*Feature request: Filetypes for speex and speex16*
The speex and speex16 codecs do not have any associated file formats and
thus cannot be read from disk and must be converted during the call.
`core show file formats` speex/spx/speex16/spx16 is missing.
I have loaded the speex codec module and `core show codecs` shows I have
speex, speex 16khz and speex 32khz loaded.
I don't know much about the Asterisk code but I would imagine adding a
filetype association for speex would be trivial to implement?
I might be on the wrong track, but I just thought that my MOH, which is
about 5 mins long, should be pre-encoded so that I don't waste CPU
encoding it into the caller's format on every call?
Thanks for reading
Kind Regards
Lope
--
_____________________________________________________________________
-- Bandwidth and Colocation Provided by http://www.api-digital.com --
asterisk-dev mailing list
To UNSUBSCRIBE or update options visit:
http://lists.digium.com/mailman/listinfo/asterisk-dev
