is it any Qt can compatible for ubuntu 20.04.6

[L4zyM0nday]

I want use Qt multimedia in ubuntu but when i debug my Qt always can't run camera and message error.
CameraBin error: "GStreamer error: negotiation problem."

or when i using vlc library it's same error camera not running as well
[00007f8078072df0] main video output error: video output creation failed
[00007f808804c650] main decoder error: failed to create video output
[h264 @ 0x7f8080013600] get_buffer() failed
[h264 @ 0x7f8080013600] thread_get_buffer() failed
[h264 @ 0x7f8080013600] decode_slice_header error

anyone can help solutioon for this problem thank you

[L4zyM0nday]

@AnneRanch thanks i have solution for my error i install all package Gstreamer in synaptic and include virtualbox guest addtion. it's work and my camera can running as well

[jsulm]

@L4zyM0nday Does your camera work at all with Linux?

[L4zyM0nday]

Thank you for your respon, yes my camera is compatible in linux. I have try camera before i run in Qt

[ChrisW67]

@L4zyM0nday In what applications does the camera function properly on this system?

[L4zyM0nday]

VLC player and guvcview on ubuntu 20

[JoeCFD]

@L4zyM0nday I could display videos on Ubuntu 18.04. Check if something is missing.
Try to run
strace your app
or to debug gstreamer with
export GST_DEBUG=5 or higher from
https://gstreamer.freedesktop.org/documentation/tutorials/basic/debugging-tools.html?gi-language=c
to see what is wrong. Likely some plugins are missing.
But the gstreamer version in ubuntu 20.04.6 is very old. My linux version is 22.04 and my gstreamer version is 1.22.5.

[L4zyM0nday]

i try your solution, I install ubuntu 22 and use gstreamer 0.2 but my error still same

CameraBin error: "GStreamer error: negotiation problem."

i don't know what is problem.

[JoeCFD]

@L4zyM0nday What is your Qt version and gstreamer version? I do not think there is gstreamer 0.2.
Show the output
gst-launch-1.0 --version
can you show your screen output after export GST_DEBUG=2 and your app is run?

and can you run vlc to show video now?

[L4zyM0nday]

on ubuntu 20 my Qt version is 5.15 and Gstreamer 1.16.3
on ubuntu 22 my qt version is 5.15 and Gstreamer 1.20

there same error and my camera still not show on app
and sorry i can't upload my screen desktop, i don't know when i upload pictures always error : parse-error

[JoeCFD]

@L4zyM0nday can you play a local video file? can not see your pic. Can you show the video with vlc?

[ChrisW67]

@L4zyM0nday said in is it any Qt can compatible for ubuntu 20.04.6:

VLC player and guvcview on ubuntu 20

So nothing can access your camera properly on this system when running Ubuntu 22?
This sounds very much like a problem outside Qt.

[L4zyM0nday]

@JoeCFD yes i can play video and camera with vlc

[Anonymous_Banned275]

@L4zyM0nday Check your "kits" versions. Once I downloaded Qr example and found out the hard way it would not work with my kit version.

[L4zyM0nday]

@AnneRanch thanks i have solution for my error i install all package Gstreamer in synaptic and include virtualbox guest addtion. it's work and my camera can running as well