[EXTERNAL] Re: Working example of RTMP stream to Gstreamer RTSP server?

[John Deutscher]

Thanks Tim,

I tried the gst-play-1.0, but unfortunately I am running this on a container in a cloud instance and would need to setup a linux box to test that out with. 

I did check the test-uri example and got the following output. Looks like it "failed reading a tag" as a warning, and then "removed the /test mount point" immediately after that.  The stream is not live any longer for testing, but I can turn it on again.  Stream path is just OBS Studio-> ngnix RTMP server module -> test-uri right now...


./test-uri rtmp://johndeu-gstreamer.westus.azurecontainer.io/live/test 
stream ready at rtsp://127.0.0.1:8554/test
0:00:09.452060177   610 0x7fbfd401ed90 WARN                flvdemux gstflvdemux.c:659:gst_flv_demux_parse_tag_script:<flvdemux0> failed reading a tag, skipping
removing /test mount point
0:00:10.230779826   610 0x5563212ea190 ERROR             rtspclient rtsp-client.c:565:find_media: client 0x556321127580: no factory for path /test/stream=0
0:00:10.230940728   610 0x5563212ea190 ERROR             rtspclient rtsp-client.c:1592:handle_setup_request: client 0x556321127580: media '/test/stream=0' not found
0:00:10.255076503   610 0x5563212ea190 ERROR             rtspclient rtsp-client.c:565:find_media: client 0x556321127580: no factory for path /test/stream=1
0:00:10.255181503   610 0x5563212ea190 ERROR             rtspclient rtsp-client.c:1592:handle_setup_request: client 0x556321127580: media '/test/stream=1' not found
0:00:10.311535712   610 0x5563212ea190 ERROR             rtspclient rtsp-client.c:565:find_media: client 0x7fbfd8061f70: no factory for path /test
0:00:10.311642713   610 0x5563212ea190 ERROR             rtspclient rtsp-client.c:1592:handle_setup_request: client 0x7fbfd8061f70: media '/test' not found

-----Original Message-----
From: Tim Müller <tim at centricular.com> 
Sent: Wednesday, July 29, 2020 5:02 PM
To: gstreamer-devel at lists.freedesktop.org
Subject: [EXTERNAL] Re: Working example of RTMP stream to Gstreamer RTSP server?

On Mon, 2020-07-27 at 23:30 +0000, John Deutscher wrote:

Hi John,

Bit difficult to know what's going on without having the input stream to test with at hand, so just a couple of questions / comments /
suggestions:

- Did you try playing back the stream with GStreamer (e.g. gst-play-
1.0) instead of VLC?

- Have you tried the test-uri example for comparison? You should be able to pass it the rtmp:// URI directly, and it should relay the data without transcoding.

- Does the rtmp input stream play with gst-play-1.0 rtmp://.. (quick sanity check)

- Instead of using flvdemux and two decodebins you should be able to use a single decodebin which will give you a decoded audio + video stream (hopefully); or uridecodebin which includes the rtmpsrc as well then. Or even the (uri)decodebin3 variants.

- How does VLC "fail"? Any errors? Does it show a window in the right size but without the video?

- If you don't want the audio, you *should* be able to just not link the audio pad - that *should* work fine as long as the video pad is linked. (Though I'm only 90% sure that flvdemux will handle this right, I have a vague memory of a bug about that at some point).

- That fakesink in your rtsp server pipeline could mess up some things a little, maybe setting it to async=false helps (if just dropping the audio branch is not possible)

Cheers
 Tim

--
Tim Müller, Centricular Ltd - https://nam06.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.centricular.com%2F&data=02%7C01%7CJohn.Deutscher%40microsoft.com%7Ce53cb0b136d149e6df5c08d8341bd86e%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637316641483449525&sdata=7VQZWEgaZ3620Qt5%2BrtCQHvYQBbcHy0Hv5eAFEnIFoc%3D&reserved=0