[Live-devel] Received Frames not written.

[Saumya Chandra]

On Sun, 26 Jun 2005, Ross Finlayson wrote:
> >I am using testOnDemandRTSPServer to transmit data and openRTSP to
> >receive. Sometimes all packets of a certain frame are received (according
> >to the sequence numbers and size shown as per Reception Stats -
> >RTPSource.cpp, Reception Stat::noteInComingPacket) but still the frame is
> >not written into the file (FileSink.cpp - FileSink::addData).  These are
> >frames in addition to the frames not written due to loss of one or more
> >constituting packets. Can you tell me what might be happening? Any
> >pointers will be helpful.
>
> What type of file (i.e., what codec) are you streaming?'
>
> Do you ever see this data loss when there is no network packet loss at all?

I am using mpeg4 encoder (ffmpeg coder), essentially .m4v file. I have not
noticed this loss when there is no loss due to network at all.


> >Another doubt is that sometimes in addition to the last frame another
> >packet (of size 59) is received with same RTP time stamp as that of the
> >packet comprizing last frame. This is not a part of the data so is not
> >writeen.

> Are you sure that this is a RTP packet, and not a RTCP packet?

It looks like a RTP packet only (reported in Reception
Stat::noteInComingPacket) and reports a payload type of 96. How can I
check for sure?


Thanks
Saumya.