Not able to get the NTP timestamp through RTP extended header for Axis F9114 camera

[VinothkumarEkambaram]

Hi,
We are using Axis F9114 encoder with firmware version as 11.2.68. We need the NTP timestamp for each RTP packet through extended header. But not not getting any RTP extended header disabled for our camera. Any suggestion to enable the RTP extended header?

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[rocky-ji]

Do you mean the SPS and PPS SEI?

Please refer to here:
https://help.axis.com/en-us/axis-os-knowledge-base#streaming-timestamps
https://github.com/orgs/AxisCommunications/discussions/655

[VinothkumarEkambaram]

Hi @rocky-ji ,
We are expecting the Timestamp through extended header like this.

But we are not getting any extended header(image attached below). Is these any way to enable to extended header mentioned in the above image.

[rocky-ji]

I don't think there is timestamp in the header, but you can get that data from the link I added in previous comments.

[VinothkumarEkambaram]

We can get the timestamp from the absolute timestamp from RTCP packets. But the first RTCP packet received after 5 seconds only. Till 5 seconds we cant get the absolute timestamp. So As mentioned in the link "https://github.com/orgs/AxisCommunications/discussions/655" extended header supported from AXIS OS 10.11. We are planning to go for extended header approach for new encoders to avoid the 5 seconds delay for new encoders. Why the extended headers not supported in our latest encoders with firmware version as 11.2.68.

[rocky-ji]

The latest is 11.11, maybe try the latest
https://www.axis.com/support/device-software