On 04/17/2014 11:18 AM, Steve Cookson wrote:
>
> On 16/04/14 19:15, Steve Cookson wrote:
>> For no good reason AFAICT the initial resolution is set to 320x240. But
>>> you can just set it to 640x480 (or more likely, 720x480 for NTSC or
>>> 720x576 for PAL):
>>>
>>> v4l2-ctl -v width=640,height=480
> Hi Guys,
>
> The attachments here are sent using tinypic.com. It's the first time
> I've used it, so I hope it works OK.
>
> I'm using the qv4l utility, but I did try it on v4l2-ctl and gst-launch
> and the results are the same as the one's I shall post here.
>
> Firstly, here is stk1160 s-video for a baseline comparison. Look at the
> word "File" in the file menu:
>
> - http://tinypic.com/m/i50k8z/2
>
> Now here is ImpactVCB-e composite. Again look at the word "File" in the
> file menu:
>
> - http://tinypic.com/m/i50k8n/2
>
> The quality is a little worse, but maybe that is just
> Composite/S-Video. Composite is not working on my stk1160, so I can't
> do a direct comparison.
>
> Now let's look at ImpactVCB-e s-video:
>
> - http://tinypic.com/m/i50k8w/2
>
> It looks like every other line is missing. I'd guess it's 640x240. I've
> tried v4l2-ctl -v width=640,height=480 etc, but no difference.
>
> You can see it too with images but it's just not so obvious as with text.
>
> Now when I switch back to ImpactVCB-e composite, I get the same problem,
> but after a restart it goes away.
>
> What do you think?
Looks like a driver bug to me. This driver needs some TLC, which I plan on
giving, but I need to finish a bunch of other stuff first.
Just use composite in the meantime.
Regards,
Hans
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