# Stream Runcam Webcam using RTSP **URL:** \ **Category:** Jetson Nano\ **Tags:** rtsp\ **Created:** [April 4, 2021, 12:06am UTC](https://forums.developer.nvidia.com/t/stream-runcam-webcam-using-rtsp/174166 "2021-04-04T00:06:12Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![CVicente](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@CVicente](https://forums.developer.nvidia.com/u/CVicente)\ **Post date:** [April 4, 2021, 12:06am UTC](https://forums.developer.nvidia.com/t/stream-runcam-webcam-using-rtsp/174166/1 "2021-04-04T00:06:13Z")
Hi all, I have a runcam Webcam connected through USB to the Jetson nano and I’ve been trying to stream it’s image through RTSP to view it, for instance, on a windows machine using VLC. I’ve gone through the [FAQ](https://forums.developer.nvidia.com/t/jetson-nano-faq/82953#5390621) and also followed several tickets in the forum concerning streaming video from a USB camera through RTSP ([This one](https://forums.developer.nvidia.com/t/stream-4k-webcam-gstreamer/108025) was quite useful) Here is what I get when I run: `v4l2-ctl -d /dev/video1 --list-formats-ext` ``` ioctl: VIDIOC_ENUM_FMT Index : 0 Type : Video Capture Pixel Format: 'MJPG' (compressed) Name : Motion-JPEG Size: Discrete 1920x1080 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 320x240 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 640x360 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 640x480 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 800x600 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 960x720 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 1024x576 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 1280x720 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 1920x1080 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 1920x1080 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Index : 1 Type : Video Capture Pixel Format: 'H264' (compressed) Name : H.264 Size: Discrete 1920x1080 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 320x240 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 640x360 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 640x480 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 800x600 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 960x720 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 1024x576 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 1280x720 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 1920x1080 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 1920x1080 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Index : 2 Type : Video Capture Pixel Format: 'YUYV' Name : YUYV 4:2:2 Size: Discrete 640x480 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 320x180 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 320x240 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 352x288 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 432x240 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 640x360 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 640x480 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 800x448 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 800x600 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 864x480 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 960x720 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 1024x576 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 1280x720 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) Size: Discrete 640x480 Interval: Discrete 0.033s (30.000 fps) Interval: Discrete 0.040s (25.000 fps) ``` In the jetson nano itself I was able to see the camera output by running: `gst-launch-1.0 v4l2src device=/dev/video1 io-mode=2 ! image/jpeg,width=1280,height=720,framerate=30/1 ! nvjpegdec ! video/x-raw ! xvimagesink` But when I run: `./test-launch "v4l2src device=/dev/video1 io-mode=2 ! image/jpeg,width=1280,height=720,framerate=30/1 ! nvjpegdec ! video/x-raw ! omxh265enc ! rtph265pay name=pay0 pt=96"` And try to read it from VLC on windows it fails to open: main debug: using renderer\_discovery module “microdns” ``` main debug: processing request item: rtsp://192.168.178.46:8554/test, node: Playlist, skip: 0 main debug: rebuilding array of current - root Playlist main debug: rebuild done - 4 items, index 3 main debug: starting playback of new item main debug: resyncing on rtsp://192.168.178.46:8554/test main debug: rtsp://192.168.178.46:8554/test is at 3 main debug: creating new input thread main debug: Creating an input for 'rtsp://192.168.178.46:8554/test' main debug: requesting art for new input thread main debug: using timeshift granularity of 50 MiB main debug: using timeshift path: C:\Users\vicen\AppData\Local\Temp main debug: `rtsp://192.168.178.46:8554/test' gives access `rtsp' demux `any' path `192.168.178.46:8554/test' main debug: creating demux: access='rtsp' demux='any' location='192.168.178.46:8554/test' file='\\192.168.178.46:8554\test' main debug: looking for access_demux module matching "rtsp": 15 candidates live555 debug: version 2016.11.28 main debug: looking for meta fetcher module matching "any": 1 candidates lua debug: Trying Lua scripts in C:\Users\vicen\AppData\Roaming\vlc\lua\meta\fetcher lua debug: Trying Lua scripts in D:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher main debug: no meta fetcher modules matched main debug: looking for art finder module matching "any": 2 candidates lua debug: Trying Lua scripts in C:\Users\vicen\AppData\Roaming\vlc\lua\meta\art lua debug: Trying Lua scripts in D:\Program Files (x86)\VideoLAN\VLC\lua\meta\art lua debug: Trying Lua playlist script D:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac lua debug: skipping script (unmatched scope) D:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac lua debug: Trying Lua playlist script D:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac lua debug: skipping script (unmatched scope) D:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac lua debug: Trying Lua playlist script D:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac lua debug: skipping script (unmatched scope) D:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac lua debug: Trying Lua playlist script D:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac lua debug: skipping script (unmatched scope) D:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac main debug: no art finder modules matched main debug: looking for meta fetcher module matching "any": 1 candidates lua debug: Trying Lua scripts in C:\Users\vicen\AppData\Roaming\vlc\lua\meta\fetcher lua debug: Trying Lua scripts in D:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher main debug: no meta fetcher modules matched main debug: looking for art finder module matching "any": 2 candidates lua debug: Trying Lua scripts in C:\Users\vicen\AppData\Roaming\vlc\lua\meta\art lua debug: Trying Lua scripts in D:\Program Files (x86)\VideoLAN\VLC\lua\meta\art lua debug: Trying Lua playlist script D:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac lua debug: Trying Lua playlist script D:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac lua debug: Trying Lua playlist script D:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac lua debug: Trying Lua playlist script D:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac main debug: no art finder modules matched qt debug: IM: Setting an input live555 debug: we will now try HTTP tunneling mode live555 debug: connection error -10057 live555 error: Failed to connect with rtsp://192.168.178.46:8554/test main debug: no access_demux modules matched main debug: creating access: rtsp://192.168.178.46:8554/test main debug: (path: \\192.168.178.46:8554\test) main debug: looking for access module matching "rtsp": 27 candidates satip debug: try to open 'rtsp://192.168.178.46:8554/test' satip debug: connect to host '192.168.178.46' main debug: net: connecting to 192.168.178.46 port 8554 main debug: connection succeeded (socket = 2344) main debug: net: opening 0.0.0.0 datagram port 9416 main debug: net: opening 0.0.0.0 datagram port 9417 satip error: Failed to setup RTSP session main debug: net: connecting to 192.168.178.46 port 8554 main debug: connection succeeded (socket = 2344) access_realrtsp warning: Cseq mismatch, got 1, assumed 0 access_realrtsp debug: rtsp connected access_realrtsp warning: only real/helix rtsp servers supported for now main debug: no access modules matched main debug: dead input qt debug: IM: Deleting the input main debug: changing item without a request (current 3/4) main debug: nothing to play main debug: removing module "microdns" ``` If I try to use the command: `gst-launch-1.0 uridecodebin uri=rtsp://127.0.0.1:8554/test ! nvoverlaysink` directly from JetsonNano I only get the following output: ![RTSP output](https://global.discourse-cdn.com/nvidia/original/3X/9/a/9a3cdd240254383021dadfc2d66031c5d21ea387.png) Any idea what I could be missing? ---
**Author:** ![DaneLLL](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/danelll/32/14043_2.png) [@DaneLLL](https://forums.developer.nvidia.com/u/DaneLLL)\ **Post date:** [April 6, 2021, 6:04am UTC](https://forums.developer.nvidia.com/t/stream-runcam-webcam-using-rtsp/174166/3 "2021-04-06T06:04:32Z")
Hi, We have deprecated omx plugins. Please try ```auto ./test-launch "v4l2src device=/dev/video1 io-mode=2 ! image/jpeg,width=1280,height=720,framerate=30/1 ! nvjpegdec ! video/x-raw ! nvvidconv ! nvv4l2h265enc ! rtph265pay name=pay0 pt=96" ``` Or try _nvv4l2decoder_ for MJPEG decoding: ```auto ./test-launch "v4l2src device=/dev/video1 io-mode=2 ! image/jpeg,width=1280,height=720,framerate=30/1 ! jpegparse ! nvv4l2decoder mjpeg=1 ! nvv4l2h265enc ! rtph265pay name=pay0 pt=96" ``` ---
**Author:** ![CVicente](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@CVicente](https://forums.developer.nvidia.com/u/CVicente)\ **Post date:** [April 6, 2021, 10:16am UTC](https://forums.developer.nvidia.com/t/stream-runcam-webcam-using-rtsp/174166/4 "2021-04-06T10:16:46Z")
Both work! Fantastic!! I guess this one is solved, thank a lot! But since “I have you here”, I’ll take advantage to ask a couple of more related questions: - I have about 1.5 seconds of delay. Do you know if it can be improved somehow? Reducing stream definition doesn’t seem to have any effect (or very little). - This camera also has a microphone. Could sound also be streamed through the test-launch app? Is it just a matter of the configuration string being passed as a parameter? - I’ve been struggling to find some documentation on how to understand and tweak the “configuration string” passed as a parameter to both test-launch or gst-launch. Could you please point me to it? Cheers, Carlos ---
**Author:** ![DaneLLL](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/danelll/32/14043_2.png) [@DaneLLL](https://forums.developer.nvidia.com/u/DaneLLL)\ **Post date:** [April 7, 2021, 7:22am UTC](https://forums.developer.nvidia.com/t/stream-runcam-webcam-using-rtsp/174166/5 "2021-04-07T07:22:37Z")
Hi The delay may be from network or source. You may run the command to check glass-to-glass latency first: ```auto gst-launch-1.0 v4l2src device=/dev/video1 io-mode=2 ! image/jpeg,width=1280,height=720,framerate=30/1 ! jpegparse ! nvv4l2decoder mjpeg=1 ! nvoverlaysink ``` For launching audio source, please refer to [Live streaming cam usb - #4 by DaneLLL](https://forums.developer.nvidia.com/t/live-streaming-cam-usb/123166/4) _test-launch_ is a sample in native gstreamer package. For further question about it, please go to [gstreamer forum](http://gstreamer-devel.966125.n4.nabble.com/) ---
**Author:** ![CVicente](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@CVicente](https://forums.developer.nvidia.com/u/CVicente)\ **Post date:** [April 7, 2021, 10:43am UTC](https://forums.developer.nvidia.com/t/stream-runcam-webcam-using-rtsp/174166/6 "2021-04-07T10:43:19Z")
> [@DaneLLL](#): > > Hi > The delay may be from network or source. You may run the command to check glass-to-glass latency first: > > ```auto > gst-launch-1.0 v4l2src device=/dev/video1 io-mode=2 ! image/jpeg,width=1280,height=720,framerate=30/1 ! jpegparse ! nvv4l2decoder mjpeg=1 ! nvoverlaysink > > ``` Actually if I use this command I do get an extremely laggy image accompanied by by the following errors: > WARNING: from element /GstPipeline:pipeline0/GstNvOverlaySink-nvoverlaysink:nvoverlaysink-nvoverlaysink0: A lot of buffers are being dropped. > Additional debug info: > gstbasesink.c(2902): gst\_base\_sink\_is\_too\_late (): /GstPipeline:pipeline0/GstNvOverlaySink-nvoverlaysink:nvoverlaysink-nvoverlaysink0: > There may be a timestamping problem, or this computer is too slow. > WARNING: from element /GstPipeline:pipeline0/GstNvOverlaySink-nvoverlaysink:nvoverlaysink-nvoverlaysink0: A lot of buffers are being dropped. On the other hand if a run: > gst-launch-1.0 v4l2src device=/dev/video1 io-mode=2 ! image/jpeg,width=1280,height=720,framerate=30/1 ! nvjpegdec ! video/x-raw ! xvimagesink It runs smoothly with negligible delay. ---
**Author:** ![nadeemm](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/nadeemm/32/367020_2.png) [@nadeemm](https://forums.developer.nvidia.com/u/nadeemm)\ **Post date:** [October 15, 2021, 3:59am UTC](https://forums.developer.nvidia.com/t/stream-runcam-webcam-using-rtsp/174166/8 "2021-10-15T03:59:34Z")