> In some of my tests which are rtp over tcp, the lost packets can be
> re-transmitted. The ReorderPacketBuffer then can take the rtp packets inside
> that may be out of sequence
RTP packets that are sent using RTP-over-TCP should never be ‘out of sequence’
- because a TCP stream always deliver
I have been using a network emulator to introduce network issues to test
the robustness of our code and found this conversation timely.
In some of my tests which are rtp over tcp, the lost packets can be
re-transmitted. The ReorderPacketBuffer then can take the rtp packets
inside that may be out o
> I have never quite got the advantage of frame fragmentation, i.e. let's
> consider a large intra frame and the two cases:
>
> 1) Sending the intra frame as a single huge packet
>
> 2) Sending the intra frame as a series of smaller packets
Your use of the word ‘packet’ here is strange (and, I
Thanks Ross,
Still one tiny bonus question / discussion, please.
I have never quite got the advantage of frame fragmentation, i.e. let's
consider a large intra frame and the two cases:
1) Sending the intra frame as a single huge packet
2) Sending the intra frame as a series of smaller packet
> The only logical way of making sense of all this is ..
>
> UDP packets: max ~ 65 kB
Yes, in principle. However, our code, by default, sets a maximum UDP packet
size of about 1500 bytes. (You can change this by calling
"MultiFramedRTPSink::setPacketSizes()”, but you should do so only if you
Dear Ross,
As always, thank you for your thorough explanation.
Regarding this same thing, today I stumbled upon a situation where
"afterGettingframe" is passing me an I-frame that is 73kB+ big !
I have read this post:
http://lists.live555.com/pipermail/live-devel/2013-April/016816.html
and
> However, with ffmpeg casted stream, I get frames along these lines (this is
> what "afterGettingFrame" of my modified DummySink passes me):
>
> nal_unit_type : 7 ( Sequence parameter set )
> nal_unit_type : 8 ( Picture parameter set )
> nal_unit_type : 5 ( Coded slice of an IDR picture )
> nal_
