i.MX Processors中的主题 Re: Use IMX6 VPU to decode picture problems

Use IMX6 VPU to decode picture problems

deanji — Wed, 14 Dec 2016 13:17:08 GMT

HI all:

I use the vpu of imx6 convert jpg picture into yuv picture, the conversion of the image size 4177920

Feel the image size is not right, and turn out the image of the top has a green stripes,

1920X1080=2073600
2073600X2=4147200
4177920-4147200=30720(I think the image size of converted is 1920X1080X2)

ps: my cmd like ./mxc_vpu_test.out -D "-i a.jpg -o b.yuv -f 7" my bsp version is 3.0.35

I would like to ask if the vpu of imx6 support this conversion, if does what is wrong?

thanks!

deanji — Thu, 15 Dec 2016 05:48:58 GMT

when i open with resolution 1920*1088,The green bar disappears。

my next qustions is why not 1920*1080(Original resolution is 1920*1080)

jimmychan — Tue, 20 Dec 2016 08:15:42 GMT

Because of the 16-pixel alignment in VPU.