You can set the frames per packets via:
mic.framesPerPacket=X;
I set that value to one in my code, as it makes decoding
simpler.
Andre Kirchner wrote:
Does anyone know how an Speex frame is encapsulated into a RTMP audio packet,
or where I can find more information about it?
I know Speex frames are 20 ms and 70 bits long when encoding quality is set to
8, but the RTMP audio samples I captured contain 40 ms, and the payload 140
bytes long.
I can't say that each RTMP packet contains 2 Speex frames because the first
byte of each RTMP audio packet payload is an identifier of the codec used (In
my case 0xB2 = RTMP_AUDIO_SOUND_FORMAT_SPEEX + RTMP_AUDIO_SOUND_RATE_55_KHZ +
RTMP_AUDIO_SOUND_SIZE_16_BITS + RTMP_AUDIO_SOUND_TYPE_MONO, although
RTMP_AUDIO_SOUND_RATE_55_KHZ is ignored because flash uses 16kHz when speex is
used), and not part of the encoded frame, and this leaves me with 139 bytes.
Thanks in advance,
Andre
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Jeff Ramin
Software Engineer
Singlewire Software
PO Box 46218
Madison, WI 53744-6218
Phone Direct - 608.298.1024
www.singlewire.com
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