[linux-uvc-devel] help needed.

[Anuroop]

Hi Team,

I am very new to UVC. I need help from you guys to guide me to achieve my
goals.

I have a tuner based h/w which will output mpeg-2 video stream over USB.
How will I be able to receive the video stream inside linux and play the
video in a VLC player or something?

As I understand, I have to add my driver to UVC and build it, such that UVC
supports my device. So that I can see video from any VLC player. Please
correct me if my understanding is wrong.

OR is there any other way? OR is there any doc which says how to add support
for a new video device?

Your help is very much appreciated.

Please add me to the mailing list too.



Thanks

Anuroop

[Paulo Assis]

Hi,

Post by Anuroop
Hi Team,
I am very new to UVC. I need help from you guys to guide me to achieve my
goals.
I have a tuner based h/w which will output mpeg-2 video stream over USB.
How will I be able to receive the video stream inside linux and play the
video in a VLC player or something?

You need a v4l2 driver for your device.

Post by Anuroop
As I understand, I have to add my driver to UVC and build it, such that UVC
supports my device. So that I can see video from any VLC player. Please
correct me if my understanding is wrong.

UVC driver only supports devices compliant with the uvc specification.
I'm not aware of uvc based tunners, but if the device is compliant
with uvc, the driver should be able to pick it out without any hacks.
Using a mpeg-2 stream inside uvc can be a bit of a problem, mpeg-4
works fine, but that's described in the uvc spec, you can stream it
directly by exporting the format description(fourcc, resolution list
and frame-rates list) or you can mux it in the MJPG stream by using a
spec defined extension control.
Mpeg-2 I'm just not sure how it's handled, never seen it in uvc devices.

Post by Anuroop
OR is there any other way? OR is there any doc which says how to add support
for a new video device?

You should look at the v4l2 docs from linux-tv:
http://linuxtv.org/docs.php

you probably should also try the v4l development mailing list:
http://linuxtv.org/lists.php

Regards,
Paulo

Post by Anuroop
Your help is very much appreciated.
Please add me to the mailing list too.
Thanks
Anuroop
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