I\'m running ffmpeg (Windows 7, 64bit) from command line to get a frame from a RTSP stream (second channel from my DVR):
ffmpeg
ffmpeg -i \"rtsp://xxx.xxx
Just put the -rtsp_transport tcp right after ffmpeg to apply it on the input stream. Like this:
-rtsp_transport tcp
ffmpeg -rtsp_transport tcp -i "rtsp://x.x.x.x:554/user=x&password=x&channel=2&stream=0.sdp" -y video.jpg