QML Video Element not detecting or reading stream from webcam

[bluestreak]

I am trying to stream video into my QML application. The video is NTSC, and I get it through /dev/video1 and I can see it being successfully displayed in VLC. When I try to make a video element to stream the video, I get a variety of error messages depending on the url I use. Using

Video {
                 id: camera1
                 source: "/dev/video1"
                 autoLoad: true
                 playing: true
             }

Video {
                 id: camera1
                 source: "/dev/video1"
                 autoLoad: true
                 playing: true
             }

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I get the error “Could not read from resource.”.
Using

source: "file://v4l2:///dev/video2"

source: "file://v4l2:///dev/video2"

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I get the error "Stream contains no data."
and using

source: "file:///dev/video2"

source: "file:///dev/video2"

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I get the errors

Error: "Could not determine type of stream." 
Error: "Could not read from resource." 
Error: "Internal data flow error."

Error: "Could not determine type of stream." 
Error: "Could not read from resource." 
Error: "Internal data flow error."

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or “Could not read from resource”.

These last two urls seem the most promising, since they recognize the device, though they won't display the screen, but I don't know how I can correctly get and display this stream. I haven't been able to find any examples of anyone doing this, or evidence in the documentation of how to correctly format these urls (and how they are parsed). Any help you can provide so that I can display the video being displayed in real time with low latency would be greatly appreciated.

[wysota]

The element needs the data to be formatted in a way it understands -- with a proper video container, its header, codec and stuff like that. What /dev/video returns is probably raw video data -- the Video QML element won't be able to handle that. You need to develop some kind of converter or implement a QML element that will do what Video element does for properly formatted video files.