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Hello Ross and Steve,
I also would like to have support for RTP header extension.
A case for this could be the inclusion of absolute playback timestamp
for recorded (i.e. non live) video frames, as reported in the Onvif
streaming specs.
I don't know how "good" this case could be, nor if it involves any IETF
standard.
Thanks,
Massimo Perrone
On 04/12/2019 23:04, Steve Ha wrote:
Hi Ross,
You are right when mention the complexity of RTP extension support.
That is why I just simply ask you to put a little effort by allowing
outside of live555 to set the
extension bit, and the rest is my part, of course I would do any way
out of scope of the
library.
Thank you for your adding 'protected' to my requested function,
On Thu, Dec 5, 2019 at 12:29 AM Ross Finlayson <finlay...@live555.com
<mailto:finlay...@live555.com>> wrote:
> On Dec 4, 2019, at 10:05 PM, Steve Ha <stev...@u2sr.com
<mailto:stev...@u2sr.com>> wrote:
>
> Hi Ross,
>
> In order to avoid modifying live555 library directly I have some
needs:
>
> 1) I want to access to function 'setSDPLinesFromRTPSink' for
overridding sdpLines() of class OnDemandServerMediaSubsession:
> private:
> void setSDPLinesFromRTPSink(RTPSink* rtpSink, FramedSource*
inputSource, unsigned estBitrate);
>
> Can you make it accesible by the derived classes?
Yes. This function is now “protected:” in the latest release of
the code (2019.12.04).
> 2) class MultiFramedRTPSink has various public functions for
setting RTP header's properties such as:
> setMarkerBit, setTimestamp, setSpecialHeaderWord,
setFrameSpecificHeaderWord, etc.
> But it does not any function to setHeaderExtensionBit.
> Can you kindly support one more function to
setHeaderExtensionBit ?
No, because we currently don’t support RTP extension headers
(either sending or receiving). (Adding a RTP extension header
involves a lot more than just setting a bit.)
I might consider supporting RTP extension headers in the future if
someone could make a good case for this (especially if it involves
support for an IETF standard).
Ross Finlayson
Live Networks, Inc.
http://www.live555.com/
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