Hi all,   I have setup Darwin Streaming server in my system which is streaming mp4,mov & 3gp format. I can play these files from media players from other system in LAN. I want to write my own RTSP client which can read these streams and play it on my system using gstreamer. so I tried to play mp4 files using following command : $gst-launch-0.10  --gst-debug=2 --gst-debug-no-color rtspsrc location=rtsp://192.168.3.171/sample_100kbit.mp4 ! rtpmp4vdepay ! decodebin ! xvimagesink Then I am getting errors given below & also I have also provided SDP returned from the DARWIN server. I would like to know if it is possible to write RTSP client using existing rtp/rtsp gstreamer plugins? What all the format can be played using gstreamer? Thanks in advance for your help. SDP returned from DARWIN SERVER ----------------------- v=0 o=StreamingServer 3377481393 1168242858000 IN IP4 192.168.3.171 s=/sample_50kbit.3gp u=http:/// e=admin@ c=IN IP4 0.0.0.0 b=AS:50 t=0 0 a=control:* a=range:npt=0-  70.00000 m=video 0 RTP/AVP 96 b=AS:41 a=rtpmap:96 MP4V-ES/90000 a=control:trackID=3 a=cliprect:0,0,144,176 a=framesize:96 176-144 a=fmtp:96 profile-level-id=1;config=000001B008000001B50EE040C0CF0000010000000120008440FA282C2090A21F m=audio 0 RTP/AVP 97 b=AS:8 a=rtpmap:97 AMR/8000/1 a=control:trackID=4 a=fmtp:97 octet-align=1 ----------------- Error log from gstreamer after launching above command: --------------------------------------------------- 0:00:00.145242000 27571 0x9fb9068 WARN              GST_PADS gstpad.c:669:gst_pad_set_active: Failed to activate pad '':sink Setting pipeline to PAUSED ... Pipeline is live and does not need PREROLL ... Setting pipeline to PLAYING ... 0:00:00.161803000 27571 0xa097df8 WARN              basesrc gstbasesrc.c:1614:gst_base_src_loop:<udpsrc2> error: Internal data flow error. 0:00:00.161868000 27571 0xa097df8 WARN              basesrc gstbasesrc.c:1614:gst_base_src_loop:<udpsrc2> error: streaming task paused, reason not-linked (-1) Setting pipeline to PAUSED ... 0:00:00.171393000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for ppm 0:00:00.171652000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for pgm 0:00:00.171830000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for pgmyuv 0:00:00.172080000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for pbm 0:00:00.172384000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for pam 0:00:00.172822000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for ffvhuff 0:00:00.173518000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for snow 0:00:00.173897000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for sonic 0:00:00.174125000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for sonicls 0:00:00.177655000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for ppm 0:00:00.177845000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for pgm 0:00:00.178016000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for pgmyuv 0:00:00.178202000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for pbm 0:00:00.178379000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for pam 0:00:00.181776000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for camstudio 0:00:00.182312000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for qdraw 0:00:00.182562000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for xl 0:00:00.182796000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for loco 0:00:00.183021000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for wnv1 0:00:00.183271000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for aasc 0:00:00.183507000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for fraps 0:00:00.183738000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:893:gst_ffmpeg_codecid_to_caps: No caps found for codec_id=1 0:00:00.184974000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:893:gst_ffmpeg_codecid_to_caps: No caps found for codec_id=86016 0:00:00.185383000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for mp3adu 0:00:00.189427000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for mp3on4 0:00:00.192239000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for ffvhuff 0:00:00.193418000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for snow 0:00:00.201848000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for mdec 0:00:00.202217000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for roqvideo 0:00:00.202478000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for interplayvideo 0:00:00.203815000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for vqavideo 0:00:00.204088000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for idcinvideo 0:00:00.204317000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for 8bps 0:00:00.204789000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for flic 0:00:00.205528000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for vmdvideo 0:00:00.205763000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for vmdaudio 0:00:00.206653000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for zmbv 0:00:00.206899000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for sonic 0:00:00.210212000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for ws_snd1 0:00:00.210557000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:893:gst_ffmpeg_codecid_to_caps: No caps found for codec_id=86022 0:00:00.211216000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for truespeech 0:00:00.211851000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for avs 0:00:00.212303000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:849:gst_ffmpeg_codecid_to_caps: Could not create stream format caps for mmvideo 0:00:00.218602000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:1526:gst_ffmpeg_formatid_to_caps: Could not create stream format caps for ingenient 0:00:00.219764000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:1526:gst_ffmpeg_formatid_to_caps: Could not create stream format caps for mmf 0:00:00.221796000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:1526:gst_ffmpeg_formatid_to_caps: Could not create stream format caps for psxstr 0:00:00.222111000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:1526:gst_ffmpeg_formatid_to_caps: Could not create stream format caps for RoQ 0:00:00.222410000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:1526:gst_ffmpeg_formatid_to_caps: Could not create stream format caps for ipmovie 0:00:00.222674000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:1526:gst_ffmpeg_formatid_to_caps: Could not create stream format caps for wc3movie 0:00:00.223046000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:1526:gst_ffmpeg_formatid_to_caps: Could not create stream format caps for wsaud 0:00:00.223293000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:1526:gst_ffmpeg_formatid_to_caps: Could not create stream format caps for wsvqa 0:00:00.223563000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:1526:gst_ffmpeg_formatid_to_caps: Could not create stream format caps for film_cpk 0:00:00.223845000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:1526:gst_ffmpeg_formatid_to_caps: Could not create stream format caps for idcin 0:00:00.224316000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:1526:gst_ffmpeg_formatid_to_caps: Could not create stream format caps for vmd 0:00:00.224586000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:1526:gst_ffmpeg_formatid_to_caps: Could not create stream format caps for mm 0:00:00.225370000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:1526:gst_ffmpeg_formatid_to_caps: Could not create stream format caps for ffm 0:00:00.225700000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:1526:gst_ffmpeg_formatid_to_caps: Could not create stream format caps for nut 0:00:00.226148000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:1526:gst_ffmpeg_formatid_to_caps: Could not create stream format caps for sol 0:00:00.226409000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:1526:gst_ffmpeg_formatid_to_caps: Could not create stream format caps for ea 0:00:00.226716000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:1526:gst_ffmpeg_formatid_to_caps: Could not create stream format caps for nsv 0:00:00.226987000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:1526:gst_ffmpeg_formatid_to_caps: Could not create stream format caps for daud 0:00:00.227265000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:1526:gst_ffmpeg_formatid_to_caps: Could not create stream format caps for voc 0:00:00.227706000 27571 0xa094198 WARN                ffmpeg gstffmpegcodecmap.c:1526:gst_ffmpeg_formatid_to_caps: Could not create stream format caps for avs 0:00:00.229850000 27571 0x9fb9068 WARN              rtspsrc gstrtspsrc.c:1442:gst_rtspsrc_send:<rtspsrc0> error: Could not receive message. (Operation interrupted) 0:00:00.230010000 27571 0x9fb9068 WARN              rtspsrc gstrtspsrc.c:2166:gst_rtspsrc_pause:<rtspsrc0> error: Could not send message. Setting pipeline to READY ... 0:00:00.231359000 27571 0x9fb9068 WARN              rtspsrc gstrtspsrc.c:1442:gst_rtspsrc_send:<rtspsrc0> error: Could not receive message. (Operation interrupted) 0:00:00.231464000 27571 0x9fb9068 WARN              rtspsrc gstrtspsrc.c:2034:gst_rtspsrc_close:<rtspsrc0> error: Could not send message. Setting pipeline to NULL ... FREEING pipeline ... ---------- Regards, Sanjay <a href="http://adworks.rediff.com/cgi-bin/AdWorks/sigclick.cgi/www.rediff.com/signature-home.htm/1507191490@Middle5?PARTNER=3"><IMG SRC="http://adworks.rediff.com/cgi-bin/AdWorks/sigimpress.cgi/www.rediff.com/signature-home.htm/1963059423@Middle5?OAS_query=null&PARTNER=3" BORDER=0 VSPACE=0 HSPACE=0></a>