Forum

SRT and UDP for broadcast delievery

Aaron 2018-12-18 19:34:17 UTC in Nimble Streamer

So here is what I'm doing I have a main server the ingests several SPTS from my Motorola BNC systems for satellite broadcast. I want to send these streams to various locations around the world that my C-Band satellite over North America cannot reach. Specifically my Work flow is as follows UDP IP IN -> Main SRT Delievery Server -> SRT OUT -> internet -> Remote Device SRT In -> Output UDP Multicast streams. Everything in this work flow works great except the last step which is the UDP output. I can watch the UDP output just fine in VLC and TSReader doesn't see any issues with it from what I can tell. However when I in my testing or others at the remote site try to groom this feed into there hardware/software cherry pickers to grooming into there IP video setup for what is I would assume STB delivery they are complaining of a high I assuming PCR Jitter of 100ms +. I'm also having similar issues decoding the UDP streams with a hardware IRD. Also, I have not issue monitor stream on the receiving side using HLS, RTMP, … so I'm confident the stream is making to the end device just fine using SRT.

I have tried various nimble reciever setup specifically both windows an linux and did the various TCP stack tuning but it doesn't seems to help at all. Since this only seems to be an issue with UDP output to hardware decoders. To me the output UDP traffic looks too bursty for what is probably a small input buffer on the IRD to handle but that is just a guess.

If anyone has any ideas on how to get this work, what the issue maybe or has done this succefully I would love to know how you did it.

Max 2018-12-19 04:52:16 UTC 

Hello Aaron,

How did you get that there is high PCR jitter, is it just a guess or you see it in some logs/tool output?

To reduce PCR jitter please try to enable "Mux rate" option on SRT receivers broadcasting stream(s) via UDP (i.e. in UDP streaming options), set "Mux rate" to e.g. 10-20% higher than input stream's bitrate and check if it helps.

Max 2018-12-19 04:52:30 UTC 
Aaron 2019-01-02 22:09:54 UTC 

Just to follow up after lot of trial and error and help for the support folks I did get this setup to work. See details below:

1. Disable Windows Defender on receiving nimble - this was causing all kinds of packet out of order issues, bandwidth spikes, and latency problems.

2. Disabled Windows firewall on the NIC sending out the UDP Multicast stream

3. This one maybe specific to the hardware decoder and the stream I'm sending but I needed to enable the MUX Rate options on the out going UDP streams and set the MUX delay to 4000ms. I think this value has to do with my older h.264 hardware decoders I'm using that are part of my satellite uplink. If I was doing this with one of my MPEG2 video streams I suspect the default 700ms value would work just fine.

4. This last one is probably specific to my IRD I'm using to decode the video but I had to set it's multicast input stream buffer to it's lowest setting of 50ms anything higher and I had issues decoding the stream. This one wasn't very intuitive to figure out. Since I was having problems I was raising the size which didn't help.

Post a reply


Post a new question

Categories:

Tags:

nimbleNimble StreamerFAQHLSnimble streamerDVRRTMPhlsSRTsrtABRrtmpcacheNimblewmsauthAPItranscoderdvrffmpegapisldpudpVODaudioRTSPfailoverrtspDASHwmspanelUDPvodpaywallstreamingabrSLDPyoutubemp4DispersastreamerandroidsslmulticastLarixsubtitlesliveNDIvideolivestreamingplaylistWMSAuthMPEG-DASHpay-per-viewerrorgeoMPEG-TSre-streamingdashcorsWMSPaneledgebandwidththumbnaillarix broadcasterWindowshttpswhite labelconfigsmilFFMPEGencryptionCORSperformancechunksraspberry pimpeg-dashpublish controlcloudfrontDRMRepublishingvlcAWSS3advertisinguser agentadvertizerristrepublishingrules.confipv6MPEGTSFastSpringRecordingRAMwms panelfileFMLEVATcrossdomainSMILmpegtsaespushakamaimobilewowzaPullserverscodecmanifestSSLchromecastbalancedrmTranscodem3u8TranscoderbugWowzaIDreportingconfigurationsnapshotdownloadawsAndroidnimblestreamerdomaintranscoderaspianloopscte35streamroutesamazonupdateipVidillionHttpsmpeg-tsBroadcastplaylist_dvrVLCPIDerrorsEncoderoriginscte-35issuechunklimitsecurityLarix BroadcasterIPCDNthumbnailsUIRegistration Issuedirect link32-bit Windowstwitchcache_controlitworkmecudalive abr support mpeg-dashwmspanelapibeirutreloadWWDCdubaideep statsCentOS v6.4logIIS Smooth StreamingcloudmediaIPTVprofilelarix abrTSReaderAbrHTTPSHot-linking protectionHDSvaddioalertsMuxjwplayer websitewhmcsbaselinetimelineVaddioAV BridgePI3 Ubuntuview timeAuthentication in HLSNimble Streamer APIPi4streamsinterfacesHLS Meta Tag editing.encrytpionloadbalancingwmsattachmentHEVCmetadatamod_rewritewmsauthsignpricehighresourcehds streamOld logsciscolocalscreencastID3 tagsgbpsAxis.net hotlinkRTMP republishattaching domainssdpshoutcastno internetInterlacedocumentationofflinecontainerNimble streamer upgradeMulticast*concurrent-connectionsTrancoderrecordingrtmp abranalisysresumeniblerhls restreamingServer-siderestreamstoppedMPEG2TSNimble Streamer versionmainWMSCONFIG_HOMEdissapointmentdatmessagegentoo install server nimbletranscoding using NvidiaPublic IpPaywall AuthwildcardobsTCOno WMSPanelVideo Playertransocding republishingdecoderAliaspay per viewlost trafficdvr_archivesmpeg dashnginx rtmp nimbleRaspian Bustericecast urlexportopensslchangelimuxamazon web servicenginxPlayReadydvr stream twiceLarix GroveamfIOSAXVVGhot-linkExpression EncoderblocknvenconSteam stopped workingadaptiveAV1 codecHLS PlayerJWPLAYERNGINX-RTMPDASH PlayerHLS voddvr export to mp47analyticsapplicationpaywalbrandingtrialCablemicrosoft streamMP4rocksoftlog traffic statsjpegscreen freezecan't registeraccuracyprivate networkLarge DVR fileslive videodebianTelegraminterleavingSLDP PLayerseekingmac osx installwotermarklive video on demandbandwithnimblesessionidFFmpegmultiple originsvimeohelp errorserverload balancezabbixheadercache expirycdnvsomlog nimble analysertmp playbacklive streamsourceViewer StatsAdsvideojsLive Streamingbitrate#restreamMP4 not playedspaceServer-Side-Task-Controlvideo stopaes encryptionsubscriptionvod no soundconcurrent connectionlebanonlocationdvr streamconnectivityUbuntu 20 ARM - AWSunique visitorstereo to monoscreen capturelive pull settingsWMSPanel settingsABR HLS Bitratesrtmp for YouTube4Kcrossdomain more then 1 domainWidevineFairplaycpunot foundCPU LoadpullAS3loggingnimble streamer vod hls transmuxingbuttAWS 3Cross Domaininsert logoinstall players setup ready to goDVRSettingstwitch larix broadcaster androidicecast metadataDVRStreamsAppleDelete recordspremium featureControl APIProgressivenimble streamer web server php script pageautomationLive streamingvideo loopUbuntu artful 17.10Transcoder MPEG DASHinvalidMPEG DASHstarttime duration seekpointadd_chunk failedPost processingfake extensionstatus:errorrebootdroppingmobile app live streamingmonitoroutrateudp streamingapi accessDeep statsicecastMPEG-Dashloadbalancerweb playercontent-dispositionpaymentstatsNimble ServerAVCaptureMovieFileOutputblock downloadrestartdvr streamsavoid refreshlivestreamABR DVR problemNimble CapacityHotlinking ProtectionStreaming routehotlinkfacebookcontentRTMP RepublishSecurityLive Switcherdemandnot to stealLive BroadcastMultiple Audio trackssecure streaminglow_bandwidthwmsAuthSignnimble streamer mpeg-ts multiple inputsLoad-Balancingvp9adsounddisk migrationThumbnailsserver incorrect timeLIVELivelearnernimble webcam html5ssaiDVR Setting limitpausemosaicHow to do live stream with multiple audio trackrmtptranscoder nimblereportsdvr on wmspanelfpsVideo cant be playedS3 AWSraspberryPaywalllivestreamintransocderstorage space availablediskcredentialsdvr to livewebhookautomateuser_agentvbv-maxratedomain lockUsers limitoutputcloudflareVOD HLS streaming on public IPlarixscteInvalid frame headerno soundincoming streamSubtitleslivestream bitratedockerDVRRecordingAuthGopDVR SettingPORTdelaympeg4storagealias route.movartifactsrtsp push androidmultiviewRAM Loadhttp serverLatencywirecasta recordruleshow-tomanage_dvrError when installingVP9server ip21Nimble connectionsabr fallbackno audiolatencyaliasdata slicesplayer sldpmp2 audioNimble streamerfastspringsoftware versionadjustSO_RCVBUFbuffering videodistributionbufferqataritworkscdnvideo.jsmultiplexcompatibility protocolsCentos 8pay-per-minuteTeradek Decoderubuntu 183.6.1-1UDP MulticastMax connectionincomingmulti-viewerFallbackhelpmultiple audio udphotlink protectionRaspberryPi4ultra low latencyaws amazonhls to multicast udpnoobSSL requestsha265broadcasterOSXmd5analyseStreamIDprerollnimble on cloudrtmp sldp nimblepluginfallbacktasks-controlRaspberryRTMP to SRTLinuxgpu{stream}Connections count limitNimble_Crushwebrtc4GRIST Bondingplayoutsrt-live-transmitWowza AgentRemote StorageSSAItuningAmazonTVfireOBSvideo and audio not matchLarix broadcasterNetworkspeedup my videoiOSPerformanceSnapshotsSRT RTMPre-publishingletsencryptTonydowntranscodingFFMPEG;RTMP;I/O errorLL-HLSHTML5 playerAddendaABR DASHprogressive downloadeventLL-HLS DVRav1 codecconnectionsNimbleStreamernimble aliasesNimble StreambuildABR bitratesPacketizingcountrist set fecmultiple audioOBS StudioWMSAUTHIVSDelaympeg2tsIIS Media Servicsrtmp republishing transcodenimble.confinterfacetrackbindprogressivebroadcast videovideo audioSRT protocoldvbduplicatingpcdynamic linksTLSV 1.2 CertificatesubfolderbrowserurlGoogle DriveHLS Streamingrtmpscostnimble abr hlsthumbnail dvr-thumbnailaudio languageVR-360Failovergoogle cloud storagepricingoverlayhot linkingTRANSCODErtpnimble dvrBandwidthdurationYadifportsRokuContinuitywordpressJetson NanoSecureLarix PlayerramfairplayNginxpublish streamStream Delayhd25trafficAArch64video streamingQuickTimeCloud StorageRistmultistreamingmultipleserver ssl erroractionscript 3dropped framesCSSMPEG2 VideoPCRlogo in streammultipointrulerepublishconcurrent

This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in the Privacy Policy. If you want to know more or withdraw your consent to all or some of the cookies, please refer to the Privacy Policy.
By closing this banner, scrolling this page, clicking a link or continuing to browse otherwise, you agree to the use of cookies.