<p>I assume you're the same poster as at ffmpeg-user who posted <a href="http://ffmpeg.org/pipermail/ffmpeg-user/2018-July/040487.html" rel="nofollow noreferrer">this</a>.</p>

<p><code>.aac</code> stores a raw bitstream and the demuxer has no facility to extract the stream parameters as extradata. So, you can try streaming like this,</p>

<pre><code>./ffmpeg -re -i ~/Downloads/test_audio.aac -acodec copy -vn -rtpflags latm -f rtsp rtsp://shafi:shafi at 192.168.1.135:1935/live/myStream
</code></pre>

CC BY-SA 4.0
2018-07-12T16:32:18.770Z
2018-07-12T16:32:18.770Z
Gyan
<p>As per ffmpeg bitstream filter documentation, if we use  -bsf:a aac_adtstoasc  then the AAC stream from a raw ADTS AAC or an MPEG-TS container to MP4A-LATM.</p>

<p><a href="https://ffmpeg.org/ffmpeg-bitstream-filters.html#aac_005fadtstoasc" rel="nofollow noreferrer">https://ffmpeg.org/ffmpeg-bitstream-filters.html#aac_005fadtstoasc</a></p>

<p>But when i try below command the file is not getting converted or adding the bitstream filter</p>

<p>./ffmpeg -i ~/Downloads/test_audio.aac -c:a copy  -bsf:a aac_adtstoasc aac_try_with_bsf.aac</p>

<p>I have checked the output format with help fo mediainfo binary.</p>

<p>Could someone help me to figure out the issue ?</p>

<ffmpeg><audio><codec>
AAC with no global headers is currently not supported
shafi
# AAC with no global headers is currently not supported

(Asked by: username_0 on 2018-07-12)

As per ffmpeg bitstream filter documentation, if we use -bsf:a aac\_adtstoasc then the AAC stream from a raw ADTS AAC or an MPEG-TS container to MP4A-LATM.

<https://ffmpeg.org/ffmpeg-bitstream-filters.html#aac_005fadtstoasc>

But when i try below command the file is not getting converted or adding the bitstream filter

./ffmpeg -i ~/Downloads/test\_audio.aac -c:a copy -bsf:a aac\_adtstoasc aac\_try\_with\_bsf.aac

I have checked the output format with help fo mediainfo binary.

Could someone help me to figure out the issue ?

**Tags:** ffmpeg, audio, codec


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## 1 answers

### Answer by username_1 on 2018-07-12. Score: 4 | Accepted answer

I assume you're the same poster as at ffmpeg-user who posted this.
.aac stores a raw bitstream and the demuxer has no facility to extract the stream parameters as extradata. So, you can try streaming like this,
./ffmpeg -re -i ~/Downloads/test_audio.aac -acodec copy -vn -rtpflags latm -f rtsp rtsp://username_0:username_0 at 192.168.1.135:1935/live/myStream


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