[Freeswitch-users] Recording with Native File PCMU

[Seven Du]

Yeah, that's why I had to record to two files(read&write) and need to mix
together by using sox.  Do you only try to using PCMU to save CPU power
matt? As Anthony said, the difference can be ignored. And you also need to
take extra effort to make sure transcoding will not happen on a
conversation.

But it maybe useful for expensive codecs like g729, iLBC, speex etc for
recording heavy scenarios. I'd like to take a look if there is a 5k bounty
;)

2009/11/26 Anthony Minessale <anthony.minessale at gmail.com>

> The processor power saved is negligible between PCMU and raw PCM and not
> worth the fuss.
> If you didn't decode the audio first you would not be able to mix the
> stream to produce a single file.
> So if we went to the trouble of making native media bugs to be able to do
> that you could barely use them so it would not be worth the 5k or more
> bounty to develop that functionality.
>
>
>
> On Sun, Nov 22, 2009 at 12:48 PM, Matthew Fong <mattdfong at gmail.com>wrote:
>
>> I'm trying to conserve processor power by recording in native file format,
>> PCMU in my case. It works great with the following line
>>
>> session:execute("record",
>> "/tmp/my_recording."..session:getVariable("read_codec"));
>>
>> however it fails to work with
>>
>> session:execute("record_session",
>> "/tmp/my_recording."..session:getVariable("read_codec"));
>> or
>> record = api:execute("sched_api", '+1 none uuid_record
>> '..session:getVariable("uuid")..' start
>> /tmp/my_recording.'..session:getVariable("read_codec"));
>>
>> Why is it that it works with record, but not with record_session or
>> uuid_record? Is there something I'm over looking? In the latter two the
>> consul reports
>>
>> 2009-11-22 18:39:04.265284 [INFO] mod_native_file.c:82 Opening File
>> [/tmp/my_recording.PCMU] 8000hz
>>
>> as if it's recording, but /tmp/my_recording.PCMU never shows up. However
>> if I change it to .wav instead of .PCMU it works. Any ideas?
>>
>> --matt
>>
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>
>
> --
> Anthony Minessale II
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