Servus zusammen,
ich habe bereits Stunden investiert eben dieses von Herbie58 beschriebene Problem auch bei mir in den Griff zu bekommen:
Unser flanschneuer Panasonic TV Serie 780 stellt via Port 554 alle gefundenen DVB-S(2) Sender als RTSP Stream bereit. Jetzt haben wir jeweils zwei Kodi v17.6 Installationen auf RPi2 die mittels Kodi PVR IPTV Simple Client v2.4.14 den Stream empfangen könnten; leider kommt jedoch mittels gereichter M3U-Liste auf beiden Kodis nichts an. VLC und DVB Viewer unter Windows bzw. Mac OS hingegen verhalten sich als Streaming Client tadellos! Hier wird alles einwandfrei und ruckelfrei abgespielt. Nur Kodi ist scheinbar nicht zu bewegen etwas via RTSP zu streamen...
Das [definition=12,4][definition='1','3']Debug[/definition][/definition] Log unter Kodi scheint hierallerdings ein Syntax Problem (-> 404 not found) der jeweiligen Quell URL aufzudecken:
[cbox]16:46:50.111 T:1926326784 NOTICE: VideoPlayer: Opening: pvr://channels/tv/Alle Kanäle/pvr.iptvsimple_672067096.pvr
16:46:50.111 T:1926326784 WARNING: CDVDMessageQueue(player)::Put MSGQ_NOT_INITIALIZED
16:46:50.111 T:1926326784 DEBUG: CMMALRenderer::CMMALRenderer
16:46:50.112 T:1926326784 DEBUG: CMMALRenderer::UnInitMMAL
16:46:50.112 T:1926326784 DEBUG: CMMALRenderer::PreInit
16:46:50.112 T:1564472064 DEBUG: Thread MMALProcess start, auto delete: false
16:46:50.112 T:1564472064 DEBUG: CMMALRenderer::Run - starting
16:46:50.112 T:1906307840 DEBUG: Thread VideoPlayer start, auto delete: false
16:46:50.113 T:1906307840 NOTICE: Creating InputStream
16:46:50.114 T:1906307840 DEBUG: PVRManager - OpenLiveStream - opening live stream on channel '1. Das Erste HD'
16:46:50.114 T:1906307840 DEBUG: opening live stream on url 'rtsp://192.168.100.146/?src=1&freq=11494&pol=h&ro=0.35&msys=dvbs2&mtype=8psk&plts=on&sr=22000&fec=23&pids=0,17,18,5100,5101,5102,5104'
16:46:50.612 T:1926326784 DEBUG: ------ Window Init (DialogBusy.xml) ------
16:46:52.832 T:1906307840 DEBUG: CDVDInputStreamPVRManager - Open - playback has started on filename pvr://channels/tv/Alle Kanäle/pvr.iptvsimple_672067096.pvr
16:46:52.834 T:1906307840 DEBUG: CDVDInputStreamPVRManager::Open - stream opened: rtsp://192.168.100.146/?src=1&freq=11494&pol=h&ro=0.35&msys=dvbs2&mtype=8psk&plts=on&sr=22000&fec=23&pids=0,17,18,5100,5101,5102,5104
16:46:52.834 T:1906307840 NOTICE: Creating Demuxer
16:46:52.855 T:1906307840 ERROR: ffmpeg[719FF300]: [rtsp] method DESCRIBE failed: 404 Not Found
16:46:52.856 T:1906307840 DEBUG: Error, could not open file rtsp://192.168.100.146/?src=1&freq=11494&pol=h&ro=0.35&msys=dvbs2&mtype=8psk&plts=on&sr=22000&fec=23&pids=0,17,18,5100,5101,5102,5104
16:46:52.872 T:1906307840 ERROR: ffmpeg[719FF300]: [rtsp] method DESCRIBE failed: 404 Not Found
16:46:52.873 T:1906307840 DEBUG: Error, could not open file rtsp://192.168.100.146/?src=1&freq=11494&pol=h&ro=0.35&msys=dvbs2&mtype=8psk&plts=on&sr=22000&fec=23&pids=0,17,18,5100,5101,5102,5104
16:46:52.896 T:1906307840 ERROR: ffmpeg[719FF300]: [rtsp] method DESCRIBE failed: 404 Not Found
16:46:52.897 T:1906307840 DEBUG: Error, could not open file rtsp://192.168.100.146/?src=1&freq=11494&pol=h&ro=0.35&msys=dvbs2&mtype=8psk&plts=on&sr=22000&fec=23&pids=0,17,18,5100,5101,5102,5104
16:46:52.913 T:1906307840 ERROR: ffmpeg[719FF300]: [rtsp] method DESCRIBE failed: 404 Not Found
16:46:52.914 T:1906307840 DEBUG: Error, could not open file rtsp://192.168.100.146/?src=1&freq=11494&pol=h&ro=0.35&msys=dvbs2&mtype=8psk&plts=on&sr=22000&fec=23&pids=0,17,18,5100,5101,5102,5104
16:46:52.931 T:1906307840 ERROR: ffmpeg[719FF300]: [rtsp] method DESCRIBE failed: 404 Not Found
16:46:52.931 T:1906307840 DEBUG: Error, could not open file rtsp://192.168.100.146/?src=1&freq=11494&pol=h&ro=0.35&msys=dvbs2&mtype=8psk&plts=on&sr=22000&fec=23&pids=0,17,18,5100,5101,5102,5104
16:46:52.944 T:1906307840 ERROR: ffmpeg[719FF300]: [rtsp] method DESCRIBE failed: 404 Not Found
16:46:52.945 T:1906307840 DEBUG: Error, could not open file rtsp://192.168.100.146/?src=1&freq=11494&pol=h&ro=0.35&msys=dvbs2&mtype=8psk&plts=on&sr=22000&fec=23&pids=0,17,18,5100,5101,5102,5104
16:46:52.957 T:1906307840 ERROR: ffmpeg[719FF300]: [rtsp] method DESCRIBE failed: 404 Not Found
16:46:52.958 T:1906307840 DEBUG: Error, could not open file rtsp://192.168.100.146/?src=1&freq=11494&pol=h&ro=0.35&msys=dvbs2&mtype=8psk&plts=on&sr=22000&fec=23&pids=0,17,18,5100,5101,5102,5104
16:46:52.975 T:1906307840 ERROR: ffmpeg[719FF300]: [rtsp] method DESCRIBE failed: 404 Not Found
16:46:52.975 T:1906307840 DEBUG: Error, could not open file rtsp://192.168.100.146/?src=1&freq=11494&pol=h&ro=0.35&msys=dvbs2&mtype=8psk&plts=on&sr=22000&fec=23&pids=0,17,18,5100,5101,5102,5104
16:46:52.988 T:1906307840 ERROR: ffmpeg[719FF300]: [rtsp] method DESCRIBE failed: 404 Not Found
16:46:52.988 T:1906307840 DEBUG: Error, could not open file rtsp://192.168.100.146/?src=1&freq=11494&pol=h&ro=0.35&msys=dvbs2&mtype=8psk&plts=on&sr=22000&fec=23&pids=0,17,18,5100,5101,5102,5104
16:46:53.006 T:1906307840 ERROR: ffmpeg[719FF300]: [rtsp] method DESCRIBE failed: 404 Not Found
16:46:53.007 T:1906307840 DEBUG: Error, could not open file rtsp://192.168.100.146/?src=1&freq=11494&pol=h&ro=0.35&msys=dvbs2&mtype=8psk&plts=on&sr=22000&fec=23&pids=0,17,18,5100,5101,5102,5104
16:46:53.007 T:1906307840 ERROR: OpenDemuxStream - Error creating demuxer
16:46:53.007 T:1906307840 NOTICE: CVideoPlayer::OnExit()
16:46:54.695 T:1906307840 DEBUG: CDVDInputStreamPVRManager::Close - stream closed
16:46:54.696 T:1906307840 DEBUG: OnPlayBackStopped: play state was 1, starting 1
16:46:54.696 T:1906307840 DEBUG: Thread VideoPlayer 1906307840 terminating
16:46:54.696 T:1926326784 DEBUG: OnPlayBackStopped: play state was 3, starting 0
16:46:54.696 T:1926312704 DEBUG: CAnnouncementManager - Announcement: OnStop from xbmc
16:46:54.697 T:1926312704 DEBUG: GOT ANNOUNCEMENT, type: 1, from xbmc, message OnStop
16:46:54.722 T:1926326784 NOTICE: CVideoPlayer::CloseFile()
16:46:54.722 T:1926326784 NOTICE: VideoPlayer: waiting for threads to exit
16:46:54.722 T:1926326784 NOTICE: VideoPlayer: finished waiting
16:46:54.722 T:1926326784 DEBUG: DeleteRenderer - deleting renderer
16:46:54.722 T:1926326784 DEBUG: CMMALRenderer::~CMMALRenderer
16:46:54.722 T:1926326784 DEBUG: CMMALRenderer::UnInitMMAL
16:46:54.722 T:1564472064 DEBUG: CMMALRenderer::Run - stopping
16:46:54.723 T:1564472064 DEBUG: Thread MMALProcess 1564472064 terminating
16:46:54.723 T:1926326784 NOTICE: CVideoPlayer::CloseFile()
16:46:54.723 T:1926326784 NOTICE: VideoPlayer: waiting for threads to exit
16:46:54.723 T:1926326784 NOTICE: VideoPlayer: finished waiting
16:46:54.729 T:1926326784 DEBUG: Radio UECP (RDS) Processor - delete ~CDVDRadioRDSData
16:46:54.820 T:1926326784 DEBUG: ------ Window Deinit (DialogBusy.xml) ------[/cbox]
Für Anregungen zur Lösungsfindung dieses scheinbar hartnäckigen Themas wäre ich wirklich äußerst dankbar 
Herbie58: konnte das Thema bei Dir ggf. bereits gelöst werden?
@Herbie58
Beste Grüße aus Köln,
Paule