Just came across that it would be useful to have an easy-to-use
decoder for MPEG-4 Visual configuration bits that are encoded in
"config" parameter of SDP. Something like mpeg4vol command-line tool
from mpeg4ip does. Are there any plans to implement this in the
future?
The 'config' parameter string is simply a string of bytes, encoded as
hexadecimal digits (therefore, two hexadecimal digits per byte). We
do have a function:
parseGeneralConfigStr()
(defined in "liveMedia/include/MPEG4LATMAudioRTPSource.hh) that will
convert a 'config' string to binary. E.g., the 'config' string
deadbeef
would be converted to the following sequence of 4 bytes
0xDE 0xAD 0xBE 0xEF
However, we don't implement any additional 'decoding' of this data
(or any other MPEG-4 data), because it's not needed at all for
streaming. (We don't include any audio/video decoding or encoding
software.)
--
Ross Finlayson
Live Networks, Inc.
http://www.live555.com/
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