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Editorial Team
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Asked: 2026-05-26T16:34:21+00:00

I have flv files that contain audio tags with a aac raw data. Each

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I have flv files that contain audio tags with a aac raw data. Each audio tag has one array of the aac raw data. Raw data have different sizes. I want send it via RTP. I add 13-bits size AU header. It is first bits of the 2 bytes. Last 3 bits is zero.

audioSpecificConfig is 12 08. 0001 0 010 – AAL LC.
My SDP are: 

m=audio 0 RTP/AVP 96
a=rtpmap:96 mpeg4-generic/44100/2
a=fmtp:96 profile-level-id=16; mode=AAC-hbr;
config=1208; sizeLength=13; indexLength=3;
indexDeltaLength=3;

I send RTP packets with audio payload grouping RTP packets with video payload. Player play video and don’t play audio.
Where is a problem? Is not valid audio payload header?
A lot of thanks!

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1 Answer

  1. Editorial Team

    I found the answer here: RFC 3640 for AAC.
    My audio is a pure raw data without ADTS or ADIF headers.

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