[Speex-dev] frame size for a given quality?

[Jeff Ramin]

Yes, I have made that search, but I'm restricted to Java.


On 11/01/2010 12:21 PM, Steve Kann wrote:
> Have you tried typing "speex rtp" into google code search?  It gives lots
> of examples of real applications which do exactly that.
>
> http://www.google.com/codesearch?as_q=speex+rtp
>
>
> -SteveK
>
>
> On 11/1/10 1:13 PM, "Jeff Ramin"<jeff.ramin at singlewire.com>  wrote:
>
>> Thanks again Steve. I'll search for the term you mention below.
>>
>> What I really want is to take the output of the speex encoder and spit
>> it out on the network via RTP. I haven't been able to find a library or
>> code
>> example that does that.
>>
>>
>> On 11/01/2010 12:03 PM, Steve Kann wrote:
>>> Jeff,
>>>
>>>    It's in the manual:
>>>
>>> http://www.speex.org/docs/manual/speex-manual/node10.html  (table 3 and
>>> 4).
>>>
>>> However, if you're asking this, you're probably trying to do something
>>> wrong, or the hard way.  You probably shouldn't be taking speex output,
>>> and trying to "count bytes".   If you are using the API, then you will
>>> just get the bits out, and then you'll know how many you have.
>>>
>>> If you're trying to stream an existing stream of speex-encoded bits,
>>> then
>>> it's pretty trivial to parse the stream.  I wrote something to do that a
>>> long time ago (google speex_get_bits), though it may not do exactly what
>>> you want.
>>>
>>> -SteveK
>>>
>>>
>>>
>>>
>>>
>>>
>>> On 11/1/10 10:44 AM, "Jeff Ramin"<jeff.ramin at singlewire.com>   wrote:
>>>
>>>> Thanks Steve.
>>>>
>>>> Is there a document anywhere that shows how many bytes/bits of data
>>>> are produced by the speex encoding process for a given amount of time
>>>> sampling rate and quality setting?
>>>>
>>>>
>>>> On 11/01/2010 09:41 AM, Steve Kann wrote:
>>>>> Jeff,
>>>>>
>>>>>     RFC-5574 is standards-track:  http://tools.ietf.org/html/rfc5574
>>>>> so,
>>>>> while it's not an approved standard, it's more standardized than a lot
>>>>> of
>>>>> interoperable traffic on the internets these days.
>>>>>
>>>>>     The RFC specifies packetization guidelines, which is basically that
>>>>> you
>>>>> put one or more frames in a packet, and then pad the rest with 0 bits
>>>>> until you have a while number of octets.
>>>>>
>>>>> -SteveK
>>>>>
>>>>>
>>>>>
>>>>> On 11/1/10 9:55 AM, "Jeff Ramin"<jeff.ramin at singlewire.com>    wrote:
>>>>>
>>>>>> I need to stream speex-encoded audio over RTP, which doesn't seem
>>>>>> to be standardized yet, so I'm gonna roll my own code. I control both
>>>>>> the
>>>>>> sending and receiving sides, so I can pretty much do what I want.
>>>>>>
>>>>>> I want each packet to contain 20ms worth of audio (sampled at 8KHz),
>>>>>> and I'm encoding using a constant bit rate and quality:6.
>>>>>>
>>>>>> Q: how do I determine how many bytes of data go into each packet? I'm
>>>>>> putting one frame (20 ms) into each packet.
>>>>>>
>>>>>> Thanks!
>>>>>>
>>>>>> -- 
>>>>>> Jeff Ramin
>>>>>> Software Engineer
>>>>>> Singlewire Software
>>>>>> 2601 W Beltline Hwy #510
>>>>>> Madison, WI 53713
>>>>>>
>>>>>> Phone Direct - 608.661.1172
>>>>>> www.singlewire.com
>>>>>>
>>>>>> _______________________________________________
>>>>>> Speex-dev mailing list
>>>>>> Speex-dev at xiph.org
>>>>>> http://lists.xiph.org/mailman/listinfo/speex-dev
>>>> -- 
>>>> Jeff Ramin
>>>> Software Engineer
>>>> Singlewire Software
>>>> 2601 W Beltline Hwy #510
>>>> Madison, WI 53713
>>>>
>>>> Phone Direct - 608.661.1172
>>>> www.singlewire.com
>>>>
>>
>> -- 
>> Jeff Ramin
>> Software Engineer
>> Singlewire Software
>> 2601 W Beltline Hwy #510
>> Madison, WI 53713
>>
>> Phone Direct - 608.661.1172
>> www.singlewire.com
>>
>


-- 
Jeff Ramin
Software Engineer
Singlewire Software
2601 W Beltline Hwy #510
Madison, WI 53713

Phone Direct - 608.661.1172
www.singlewire.com