Does JMF2.1.1 cross platform version support dvi/rtp

Question

hi!!!
does JMF2.1.1 cross platform version support dvi/rtp ,8000.0 Hz,4-bit format???
when i type java AVTransmit2 javasound:/0 224.0.0.1 22222 at the konsole in linux i am getting the following error:
Audio not supported: interface TargetDataLine supporting format PCM_SIGNED, 44100.0 Hz, 16 bit, stereo, little-endian, audio data, and buffers of 22050 to 22050 bytes
Audio not supported: interface TargetDataLine supporting format PCM_SIGNED, 44100.0 Hz, 16 bit, stereo, little-endian, audio data, and buffers of 22050 to 22050 bytes

Answer 1

hi,
I still dont understand well the jmf either, but i can confirm that i am able to capture audio (using javasound://8000) to capture at 8Khz, setting a processor model with this source, AudioFormat.DVI_RTP and ContentDescriptor.RAW_RTP
and my transmition happens well:
dvi/rtp, 8000.0 Hz, 4-bit, Mono
I JUST CAN CONFIRM THAT JMF 2.1.1 DO SUPPORT DVI/RTP 8000.0 4BIT
as per the documentation, a processor model requires:
1. a datasource
2. an imput audio format
3. the output content description
one will think then that the audio imput should be linear and the output should be div/rtp, but it seems it doesnt work like that, im digging on the docs with no success till now, so by experiments i can say that somehow the imput audio format, already tells the kind of coder one will use, that case, DVI/RTP. This means, the data is encoded to a special DVI format who prepare the packets to be Transmitted, and then on the output content one says, is data ready to be transmitted, since is already packetize you say just content is raw or raw_rtp.
you can not for example say, then ok, convert my imput to a DVI and then packetize it to a (DVI)/RTP, because in this case you will have, starting from the capture device:
LINEAR convert to DVI> DVI packetize> DVI_RTP -----> Tx
why not? because there is no codec that receives DVI and convert it to DVI_RTP,
the only one we got is com.ibm.media.codec.audio.dvi.JavaEncoder
this one is only able to take linear and convert it to DVI/RTP
so you have to use the model
LINEAR ----> DVI/RTP -----> CONTENT = RAW ----> tx it, sink it, but not write...
to write there are more problems, but that was not the question, just tx
if someone can explain this better or point to a docs were it is explain it, ill appreciate,
regards,
jahm