issue about imx6 IPU output

宗標廖 — Thu, 27 Aug 2015 09:53:34 GMT

Hello Community

We met a problem about imx6 IPU as bellow.

Data path =

imx6 BT 656 capture input, crop size = 720 x 480, capture format = 720 x 480, 60fps progressive

then,

do memory copy to output buffer,

then,

imx6 V4L2 output scaling on /dev/video17, format = 720x480, output cropsize = 1280 x 720, 60fps progressive, output dot clock frequency = 59.03MHz

then we found out that the display image is NG, and the right-most edge area is lost.

We did another test like this:

imx6 BT 656 capture input, crop size = 720 x 480, capture format = 720 x 480, 60fps progressive

then,

do memory copy to output buffer,

then,

imx6 V4L2 output scaling on /dev/video17, format = 720x480, output cropsize = 1080 x 720, 60fps progressive, output dot clock frequency = 59.03MHz

then we found out that the display image occupies the left part of the display area as expected(because the display area is 1280x720), and the right-most edge area is NOT lost.

Is it because of some kind of limitation in IMX6solo IPU capability? How can we overcome this effect?

Best Regards

ZongbiaoLiao

Re: issue about imx6 IPU output

joanxie — Mon, 31 Aug 2015 08:47:25 GMT

refer to the mx6s reference manual, mx6s can support 720p output.

you don't use vpu, just capture video then output right? could you tell me what's command you use? and any error log file?

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issue about imx6 IPU output

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