[vlc-devel] Problem in VLC using V4L2 with analog camera.

Beyonlo beyonlo at gmail.com
Tue Mar 31 18:18:14 CEST 2009


Hello dionoea!

Ok, I'll to test tomorrow and send you a feedback.
What version I need to get to test, the git version?



On Tue, Mar 31, 2009 at 12:26 PM, Antoine Cellerier
<dionoea at videolan.org> wrote:
> On Tue, Mar 31, 2009, Antoine Cellerier wrote:
>> Well I though that VLC was doing it ok, and the libv4l2 wrapper is known
>> to break some stuff, which is why I was asking for a test without it
>> first :) Thanks for the hint anyway, I'll look at interlaced content
>> handling once we've ruled out libv4l2 as the culprit.
>
> After rapidly skiming the code, it indeed seems that we don't handle
> interlaced content properly. We ask the v4l2 device to provide non
> interlaced content, which is fine if it agrees but isn't if it can't and
> then sends us interlaced content. (V4L2_FIELD_INTERLACED is actually a
> request for full images)
>
> I'll try fixing that code tonight. If anyone has access to hardware
> capable of providing interlaced content it could help debugging.
>
> --
> Antoine Cellerier
> dionoea
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