How to access RTSP URL for H264 playback?

[branpurn]

Using Docker, I am unable to identify the RTSP URL for H264

docker run --device=/dev/video0 -p 8554:8554 -it --restart=always mpromonet/v4l2rtspserver -H3040 -W3040 -F60

[NOTICE] /v4l2rtspserver/inc/V4l2RTSPServer.h:132
        HLS       http://172.17.0.3:8554/ts.m3u8
[NOTICE] /v4l2rtspserver/inc/V4l2RTSPServer.h:133
        MPEG-DASH http://172.17.0.3:8554/ts.mpdroot@ubuntu:/home/...#

Ex., on LAN, the device is 192.168.1.94,

Connection failed:
VLC could not connect to "192.168.1.94:8554".
Your input can't be opened:
VLC is unable to open the MRL 'rtsp://192.168.1.94:8554'. Check the log for details.
Connection failed:
VLC could not connect to "192.168.1.94:8554".
Your input can't be opened:
VLC is unable to open the MRL 'rtsp://192.168.1.94:8554'. Check the log for details.

---

Full output,

root@ubuntu:/home/...# docker run --device=/dev/video0 -p 8554:8554 -it mpromonet/v4l2rtspserver
log level:500

[NOTICE] /v4l2rtspserver/main.cpp:269
        Version: 0.3.7-25-g7dee1b8 live555 version:2023.01.19
[NOTICE] /v4l2rtspserver/src/V4l2RTSPServer.cpp:37
        Create V4L2 Source.../dev/video0
[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2Device.cpp:133
        driver:bm2835 mmal capabilities:85200005 mandatory:4000001
[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2Device.cpp:136
        /dev/video0 support capture
[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2Device.cpp:138
        /dev/video0 support read/write
[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2Device.cpp:139
        /dev/video0 support streaming
[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2Device.cpp:225
        /dev/video0:H264 size:1024x768 bufferSize:786432
[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2Device.cpp:246
        fps:1/25
[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2Device.cpp:247
        nbBuffer:1
[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2MmapDevice.cpp:49
        Device /dev/video0
[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2MmapDevice.cpp:73
VIDIOC_STREAMON: Invalid argument
        Device /dev/video0 nb buffer:10
[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2MmapDevice.cpp:141
        Device /dev/video0
[NOTICE] /v4l2rtspserver/inc/V4l2RTSPServer.h:132
        HLS       http://172.17.0.3:8554/ts.m3u8
[NOTICE] /v4l2rtspserver/inc/V4l2RTSPServer.h:133
        MPEG-DASH http://172.17.0.3:8554/ts.mpdroot@ubuntu:/home/...#

Even with --network host,

[NOTICE] /v4l2rtspserver/inc/V4l2RTSPServer.h:132
        HLS       http://192.168.1.94:8554/ts.m3u8

This is inaccessible even from another container on the same Pi with --network host

[mpromonet]

Hi,

I am not sure to understand, the default rtsp path is /unicast, then you should try vlc rtsp://192.168.1.94:8554/unicast

Best Regards,
Michel.

[branpurn]

Thanks, I am sure I am not explaining adequately, were that I knew what "correct" looked like I would--

docker run --device=/dev/video0 --network host -it mpromonet/v4l2rtspserver -u ""
In VLC,
Your input can't be opened: VLC is unable to open the MRL 'rtsp://192.168.1.94:8554/unicast'. Check the log for details.

---

VLC is just for testing, as my next goal would be to put the RTSP link into Kerberos.io, which is running in another container presently also set --network host, and only supports URLs to H264 RTSP streams

Kerberos, when pointed to rtsp://192.168.1.94:8554/unicast, says Something went wrong while verifying the camera settings :dial tcp 192.168.1.94:8554: connect: connection refused

[mpromonet]

If you are using docker run --device=/dev/video0 --network host -it mpromonet/v4l2rtspserver -u "" the RTSP url should be 'rtsp://192.168.1.94:8554/.
If you are using docker run --device=/dev/video0 --network host -it mpromonet/v4l2rtspserver the RTSP url should be 'rtsp://192.168.1.94:8554/unicast.

[branpurn]

I am trying combinations of both with no luck, and I am beginning to think Ubuntu Core is more trouble than it's worth

Is this Invalid argument indicative that the server isn't spawned?

[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2MmapDevice.cpp:73
VIDIOC_STREAMON: Invalid argument
        Device /dev/video0 nb buffer:10

[mpromonet]

This means somethings goes wrong openning the V4L2 device, increasing loglevel may helps to understand the reason.

[branpurn]

What's the loglevel parameter/etc., it's defaulted 500?

I thought I had loaded the driver already, (opensource V4L2 driver bcm2835-v4l2) but doing it again, the error changed to 'not permitted'

[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2MmapDevice.cpp:73
VIDIOC_STREAMON: Operation not permitted
        Device /dev/video0 nb buffer:10

making me think this is an Ubuntu Core issue w/ sandboxing of Docker

---

Same behavior as --privileged

root@ubuntu:/home/...# docker run --device=/dev/video0 --privileged --network host -it mpromonet/v4l2rtspserver -u ""
log level:500

[NOTICE] /v4l2rtspserver/main.cpp:269
        Version: 0.3.7-25-g7dee1b8 live555 version:2023.01.19
[NOTICE] /v4l2rtspserver/src/V4l2RTSPServer.cpp:37
        Create V4L2 Source.../dev/video0
[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2Device.cpp:133
        driver:bm2835 mmal capabilities:85200005 mandatory:4000001
[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2Device.cpp:136
        /dev/video0 support capture
[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2Device.cpp:138
        /dev/video0 support read/write
[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2Device.cpp:139
        /dev/video0 support streaming
[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2Device.cpp:225
        /dev/video0:H264 size:1024x768 bufferSize:786432
[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2Device.cpp:246
        fps:1/25
[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2Device.cpp:247
        nbBuffer:1
[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2MmapDevice.cpp:49
        Device /dev/video0
[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2MmapDevice.cpp:73
VIDIOC_STREAMON: Operation not permitted
        Device /dev/video0 nb buffer:10
[NOTICE] /v4l2rtspserver/libv4l2cpp/src/V4l2MmapDevice.cpp:141

---

There's an unofficial snap version, (https://snapcraft.io/v4l2rtspserver)

root@ubuntu:/home/...# snap services
Service                        Startup  Current   Notes
docker.dockerd                 enabled  active    -
v4l2rtspserver.v4l2rtspserver  enabled  inactive  -
root@ubuntu:/home/...# sudo snap start v4l2rtspserver
Started.
root@ubuntu:/home/...# snap services
Service                        Startup  Current   Notes
docker.dockerd                 enabled  active    -
v4l2rtspserver.v4l2rtspserver  enabled  inactive  -
root@ubuntu:/home/...# sudo snap start v4l2rtspserver -u ""
error: unknown flag `u'

but it can't take any flags and doesn't go 'up' after starting it...

but it's also promising for Ubuntu Core b/c it explicitly can be given camera permissions,

sudo snap connect v4l2rtspserver:camera

When executed manually, v4l2rtspserver.manual -- it has the same issue as the official Docker

[NOTICE] /build/v4l2rtspserver/parts/v4lserver/src/v4l2wrapper/src/V4l2MmapDevice.cpp:73
VIDIOC_STREAMON: Operation not permitted
        Device /dev/video0 nb buffer:10

[Maijied]

My DVR system doesn't have rtsp support. Can I get rtsp access using this Link?