[FFmpeg-user] sytraming AAC+

Moritz Barsnick barsnick at gmx.net
Mon Mar 22 10:51:06 EET 2021

Hi Robert,

On Mon, Mar 22, 2021 at 18:08:23 +1300, Robert Jeffares wrote:
> I am getting...
> [rtp @ 0x55e52ffe8c00] AAC with no global headers is currently not
> supported.

You are usually asked to provide the full, uncut console output of your

> ffmpeg -i http://localhost:8000/wireless.aacp -acodec copy  -vn -flags
> +global_header -f rtp rtp://
> is there support for aac coming?

AAC is supported. Your input seems to be raw AAC, which ffmpeg cannot
(yet) add information about to RTP. Since you are copying, not
reencoding, the option "-flags +global_header", which is encoding
flags, has no effect.

You might try a different RTP format as suggested here:
i.e. using
    -rtpflags latm
but I don't know whether your RTP target supports this.


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