Re: [Linphone-users] Linphonec 4.4.0 does not detect v4l2loopback devices

[Iain Mott]

Hi Giang,

I'm sorry I can't help with your question but have you tried linphone-daemon? I believe that this supersedes linphonec and linphonecsh.

I was pleased to see that were able to build linphone on Ubuntu. So far I have been unable to do so. The part I'm stuck on, is where the environment variable Qt5_DIR is set. I am unable to find the path for the cmake folders of Qt5.

Can you please tell me where your cmake folders are located - and if there's some specific package I need to install?

I am able to find the bin and I believe the path should be defined as:

PATH="/usr/lib/x86_64-linux-gnu/qt5/bin/:$PATH"

On my system "whereis qt5" yields:

qt5: /usr/lib/x86_64-linux-gnu/qt5 /usr/lib/qt5 /usr/share/qt5

I am using Linux Mint 19.3 which is based on Ubuntu 18.04.

Thanks. All the best,

Iain

Em 29/03/2020 15:19, Do Truong Giang escreveu:

Hi, I've created a virtual video device "/dev/video0" using kernel module v4l2loopback and I'm piping RTSP video stream from an IP camera to that device:

ffmpeg -i rtsp://my_camera_RTSP_URL/Streaming -pix_fmt yuv420p -f v4l2 /dev/video0

Now, I'm able to play it with VLC as from a capture device. 

However when i use linphonec:

$ linphonec -C

linphonec> webcam list
0: StaticImage: Static picture

linphonec seems not detect any video devices (I expected /dev/video0 should be there), just only the "0: StaticImage: Static picture" as per the output of command "webcam list". I also tried the GUI but no video device is detected there either.

I built linphonec from source, as described here:
https://gitlab.linphone.org/BC/public/linphone-desktop  

with Ubuntu 19.10, 5.3.0-29-generic

I have know idea, what could be wrong.

Any help would be appreciated

Giang

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