Skip to main content

Notice

Please note that most of the software linked on this forum is likely to be safe to use. If you are unsure, feel free to ask in the relevant topics, or send a private message to an administrator or moderator. To help curb the problems of false positives, or in the event that you do find actual malware, you can contribute through the article linked here.
Topic: AAC frequency (Read 2031 times) previous topic - next topic
0 Members and 1 Guest are viewing this topic.

AAC frequency

Hi,

I implemented RTSP streaming protocol for music streaming.

From SDP protocol i got below value for RTPMAP field.

Media Attribute (a): rtpmap:96 MP4A-LATM/22050/1



From RTPMAP field information, received data type is AAC with frquency 22050.


If i try to play the received RTP data with this frequency song clarity is not good.

I tried to play with different AAC frequencies (frequency values are taken from
"ISO/IEC 13818-7 (AAC)" document). Finally with 64000 frequency is giving good clarity.

How to calculate the frequency for AAc data from RTP streams?

What is default frequency for AAc data?

Thanks in advance.

Regards,

swathi jakkam.