[gst-devel] RE : Re: AMR caps incompatibility between muxer and encoder

[Benoit Fouet]

Benoit Fouet wrote:
> SP GLE wrote:
>   
>> Hi,
>> thanks for your answer, but if i change the amr decoder (amrnbdec) i
>> also have to change :
>> qtdemux, amrnbdec, rtpamrpay, rtpamrdepay,...
>>   
>>     
> i don't think so. as far as i know, only the amr dec/enc lpugin is
> handling audio/AMR data, so if you change it there, it chould be ok to
> make the stuf work.
>   
it seems that i am totally wrong on this point !

>> gst-ffmpeg and amr elements seems to handle the same thing with two
>> different names, 'audio/AMR' and 'audio/x-amr-nb'. 
>>   
>>     
> that's true, and that's why the caps intersection is NULL
>   
>> Is it possible to 'force' negotiation to handle differents encoding
>> names in capabilities as the same entity, something like an adapter.
>>   
>>     
> you can make a basic plugin which just copies data on its sink pad to
> its source pad, with only the caps that change, but i really think this
> is not the right thing to do :)
>
> -- Ben
>   
>> Thanks.
>>
>>
>> --- Benoit Fouet <benoit.fouet at purplelabs.com> a écrit :
>>
>>   
>>     
>>> Hi
>>>
>>> SP GLE wrote:
>>>     
>>>       
>>>> Hi, 
>>>> I'm trying to link an 'amrnbenc' element and a 'ffmux_mov',
>>>> amrnbenc SRC caps are
>>>>    Capabilities:
>>>>       audio/AMR
>>>>                    rate: 8000
>>>>                channels: 1
>>>>
>>>> ffmux_mov SINK Caps are
>>>>       audio/x-amr-nb
>>>>                    rate: [ 8000, 96000 ]
>>>>                channels: [ 1, 2 ]
>>>>
>>>> so linking seems incompatible, how can i link these elements ? Is
>>>>       
>>>>         
>>> there
>>>     
>>>       
>>>> a way to change capabilities ?
>>>>
>>>> failed negotiation between pads is attached for the following cmd :
>>>> GST_DEBUG=4 GST_DEBUG_NO_COLOR=1  gst-launch audiotestsrc !
>>>> audioconvert ! amrnbenc ! ffmux_mov ! filesink location=/tmp/f.mov
>>>>
>>>> Thanks.
>>>>   
>>>>       
>>>>         
>>> you have to change the source code of amr decoder, so that it is
>>> audio/x-amr-nb too on its sink pad.
>>> then compile and install back the library, and this should be ok :)
>>>
>>> Hope that helps,
>>>
>>> -- Ben
>>>
>>>
>>>     
>>>       
>>
>> 	
>>
>> 	
>> 		
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>
>
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