Do you think is it possible to A20 to capture simultaneously videos from four 
analog video cameras through the four analog video inputs, encode them in H.264 
and record them on a SDCard ?

Em segunda-feira, 2 de novembro de 2015 10:53:19 UTC-2, Rosimildo DaSilva  
escreveu:
> And one last note, with a NTSC camera:
> 
> 
> 
> ffmpeg -f v4l2 -r ntsc -pix_fmt nv12 -i /dev/video1 -t 10 -vf yadif tvd.avi
> 
> 
> 
> 
> Enjoy!
> 
> 
> On Monday, November 2, 2015 at 6:12:13 AM UTC-6, Rosimildo DaSilva wrote:On 
> Monday, November 2, 2015 at 4:11:58 AM UTC-6, Enrico wrote:
> Il giorno domenica 1 novembre 2015 23:52:45 UTC+1, Rosimildo DaSilva ha 
> scritto:
> Hi all,
> 
> 
> I confirm the driver from "Rodolfo" works on a Marsboard H/W. So, it seems 
> the CB3 I have must be damaged or the TV-In do not work there.
> 
> 
> I bought a Marsboard, and it works. 
> 
> 
> The  picture is not great, but the driver works.  
> 
> 
> Also, I have fixed a few things to avoid to use the "application" to set 
> things up.
> 
> 
> Now, it works out of the box with ffmpeg.
> 
> 
> Rosimildo
> 
> 
> 
> 
> Great, did you use an android kernel or linux-sunxi?
> 
> I was testing on olinuxino micro (a20), maybe it has the same issue as the 
> cb3 and tv-in will never work. From a quick look at the schematics the only 
> difference with marsboard for both boards is the missing input filter, i 
> don't know if that could be the issue....i'm adding Tsvetan on cc maybe he 
> has an answer.
> 
> Enrico
> 
> 
> 
> I've used the "linux-sunxi"  3.4.103, which is a relatively new kernel. It 
> should work with the latest one.
> 
> 
> The marsboard comes with 3.4.90, as mentioned before by Rodolfo. I just 
> compiled and updated the kernel, and it works out of the box with the same 
> Uboot and rootfs.
> 
> 
> What I did it:
> 
> 

> - Compiled the kernel ( got the .config from the running system ). You have 
> to get the driver from Rodolfo's tree... and follow the instructions there...
> - copied "uImage" to your sdCard ( partition 1 )
> - copied /lib/modules to sdCard ( partition 2 )
> - depmod -a
> - reboot
> 
> 
> Rosimldo

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