I have created an RTSP server using your library that streams video frames in a custom format, using the M bit to indicate the end of the frame. Each frame is roughly 400KB. I have been trying to use openRTSP to receive the stream and output each frame to a file using the following command line parameters: "-S 0 -b 406528 -Q -m".
Initially each file that was created by openRTSP was only 140 bytes. I then realized that I needed to set "doNormalMBitRule" to True in MediaSession::initiate(). Once I did that, I get file sizes that are the exact size that I am expecting. However, now the entire file, with the exception of a very few bytes at the beginning and scattered seemingly randomly throughout, contains all zeros. Using wireshark I can verify that the actual non-zero data is being sent. The QoS statistics also show that no packets were dropped. Does anyone have any idea of what may be causing this? I have included the openRTSP output from one 3 second run below in case that helps. Thanks, Tyson Wiser ------------------------ Begin openRTSP output ---------------------------- Opening connection to 172.17.1.107, port 8554... ...remote connection opened Sending request: OPTIONS rtsp://172.17.1.107:8554/WIDEAREA RTSP/1.0 CSeq: 2 User-Agent: openRTSP.exe (LIVE555 Streaming Media v2010.11.17) Received 152 new bytes of response data. Received a complete OPTIONS response: RTSP/1.0 200 OK CSeq: 2 Date: Thu, Dec 16 2010 18:37:14 GMT Public: OPTIONS, DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE, GET_PARAMETER, SET_PARAMETER Sending request: DESCRIBE rtsp://172.17.1.107:8554/WIDEAREA RTSP/1.0 CSeq: 3 User-Agent: openRTSP.exe (LIVE555 Streaming Media v2010.11.17) Accept: application/sdp Received 549 new bytes of response data. Received a complete DESCRIBE response: RTSP/1.0 200 OK CSeq: 3 Date: Thu, Dec 16 2010 18:37:14 GMT Content-Base: rtsp://172.17.1.107:8554/WIDEAREA/ Content-Type: application/sdp Content-Length: 382 v=0 o=- 1292524551253004 1 IN IP4 172.17.1.107 s=LIVE555 Streaming Media v i=LIVE555 Streaming Media v t=0 0 a=tool:LIVE555 Streaming Media v2010.11.17 a=type:broadcast a=control:* a=range:npt=0- a=x-qt-text-nam:LIVE555 Streaming Media v a=x-qt-text-inf:LIVE555 Streaming Media v m=video 0 RTP/AVP 96 c=IN IP4 0.0.0.0 b=AS:18874 a=rtpmap:96 Logos/3 a=control:track1 Opened URL "rtsp://172.17.1.107:8554/WIDEAREA", returning a SDP description: v=0 o=- 1292524551253004 1 IN IP4 172.17.1.107 s=LIVE555 Streaming Media v i=LIVE555 Streaming Media v t=0 0 a=tool:LIVE555 Streaming Media v2010.11.17 a=type:broadcast a=control:* a=range:npt=0- a=x-qt-text-nam:LIVE555 Streaming Media v a=x-qt-text-inf:LIVE555 Streaming Media v m=video 0 RTP/AVP 96 c=IN IP4 0.0.0.0 b=AS:18874 a=rtpmap:96 Logos/3 a=control:track1 Created receiver for "video/LOGOS" subsession (client ports 55606-55607) Sending request: SETUP rtsp://172.17.1.107:8554/WIDEAREA/track1 RTSP/1.0 CSeq: 4 User-Agent: openRTSP.exe (LIVE555 Streaming Media v2010.11.17) Transport: RTP/AVP;unicast;client_port=55606-55607 Received 203 new bytes of response data. Received a complete SETUP response: RTSP/1.0 200 OK CSeq: 4 Date: Thu, Dec 16 2010 18:37:14 GMT Transport: RTP/AVP;unicast;destination=172.17.1.107;source=172.17.1.107;client_p ort=55606-55607;server_port=6970-6971 Session: 00007A96 Setup "video/LOGOS" subsession (client ports 55606-55607) Created output file: "video-LOGOS-1" Sending request: PLAY rtsp://172.17.1.107:8554/WIDEAREA/ RTSP/1.0 CSeq: 5 User-Agent: openRTSP.exe (LIVE555 Streaming Media v2010.11.17) Session: 00007A96 Range: npt=0.000-3.000 Received 188 new bytes of response data. Received a complete PLAY response: RTSP/1.0 200 OK CSeq: 5 Date: Thu, Dec 16 2010 18:37:14 GMT Range: npt=0.000- Session: 00007A96 RTP-Info: url=rtsp://172.17.1.107:8554/WIDEAREA/track1;seq=26975;rtptime=2147490 323 Started playing session Receiving streamed data (for up to 3.000000 seconds)... begin_QOS_statistics subsession video/LOGOS num_packets_received 2556 num_packets_lost 0 elapsed_measurement_time 3.000309 kBytes_received_total 3658.752000 measurement_sampling_interval_ms 1000 kbits_per_second_min 9753.258360 kbits_per_second_ave 9755.667166 kbits_per_second_max 9758.194278 packet_loss_percentage_min 0.000000 packet_loss_percentage_ave 0.000000 packet_loss_percentage_max 0.000000 inter_packet_gap_ms_min 0.004000 inter_packet_gap_ms_ave 1.043790 inter_packet_gap_ms_max 399.562000 end_QOS_statistics Sending request: TEARDOWN rtsp://172.17.1.107:8554/WIDEAREA/ RTSP/1.0 CSeq: 6 User-Agent: openRTSP.exe (LIVE555 Streaming Media v2010.11.17) Session: 00007A96 Received 65 new bytes of response data. Received a complete TEARDOWN response: RTSP/1.0 200 OK CSeq: 6 Date: Thu, Dec 16 2010 18:37:17 GMT
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