Cameron Maxwell wrote:

>When your fiddling with the sync codes it changes where the decoder thinks the 
>image starts.  This happens to be inbetween YUV sequences.  So if your 
>changing the sync codes you also need to chagne the YUV order.
>
>In usbvision.c, usbvision_set_input() you'll see that we set the YUV order 
>with:
>  usbvision_write_reg(usbvision, USBVISION_DVI_YUV, 0x06)
>
>Simply change the 0x06 value until you get the picture right.  It can range 
>between 0x00-0x07.  Although the spec for the saa_7113 does give the order of 
>the output because the sync changes where we start reading from its almost 
>impossible to determine what this value should be, so just use trial and 
>error.  Thankfully there aren't many to try.
>
>On Thu, 26 Sep 2002 14:44, Fabio Yasusi Yamamoto wrote:
>  
>
>>If i set USBVISION_8_422_SYNC to 0, i got a black and white image ( it's
>>ok, my system is pal-m , and the PCTV is set to ntsc  ). but some parts
>>of the picture is missing.
>>
>>
>>If i set USBVISION_8_422_SYNC to 1, i got a full image, but there is
>>something wrong with YUV. ( only green and purple colors ).
>>    
>>
>
>  
>
It's ok now. even PAL-M colors.
But there is a piece of the image missing, the firts lines, and the 
firts columns os each line.

http://www.hostname.org/imagem6.png

do you ave any ideia of why this happening?






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