On 06/28/2010 07:54 AM, Jeffrey Barnes wrote:
Hello
I have the same problem when using ffmpeg to save RTSP streams
from Axis IP cameras. I am able to start streaming from the camera
using av_open_input_file() and av_read_frame(), but the stream from
the camera stops after approx 1minute.
The camera requires RTCP receiver reports to keep the
connection alive. I have analysed network traffic to the camera, and
no RTCP reports are sent to the camera when reading RTP packets
I just tried, and I can see RTCP RR packets with wireshark, when playing
an RTSP URL with ffplay.
The problem might be that those RTCP RR packets contain a wrong SSRC
value (the source SSRC seems to be used for the receiver, too). Hence,
the axis camera might be discarding them.
Luca
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