IMX6Q SabreAuto h264 decoder not decoding to full range colors

ashutoshsrivast — Wed, 14 Dec 2016 05:00:00 GMT

We have issue with one of h264 stream. This is test stream to check color displayed on the LCD screen,
In one of the screens. It has 16 bars representing 16 shades of gray. Starting from 0,16,32 ....... 240,255.

Issue we are facing is that we are not able to visually differentiate between 0,16 and 240,255 shades of gray.

We are using mxc_vpu like following command.

/unit_tests/mxc_vpu_test.out -D "-i video800x480x60.h264 -f2 -o 123.yuv -v h -t 0"

Above command line dumps video to 123.yuv file

When we check the dump in pc or in board we are not able to see colors.
There is no difference in 0,16 and 240, 255 (towards white)

Following is information regarding VPU
Product Info: i.MX6Q/D/S
VPU firmware version: 2.1.9_r36350
VPU library version: 5.4.12
Format: STD_AVC

Re: IMX6Q SabreAuto h264 decoder not decoding to full range colors

joanxie — Tue, 27 Dec 2016 06:55:25 GMT

do you mind uploading your h264 file, let me reproduce it on my mx6q board

Re: IMX6Q SabreAuto h264 decoder not decoding to full range colors

vikaspatil — Tue, 09 Jan 2018 05:31:33 GMT

Hi Ashutosh,

Did you fix the issue? As I am also facing same issue, it would be helpful if you could give some inputs.

Regards,

Vikash

topic Re: IMX6Q SabreAuto h264 decoder not decoding to full range colors in i.MX Processors

IMX6Q SabreAuto h264 decoder not decoding to full range colors

Re: IMX6Q SabreAuto h264 decoder not decoding to full range colors

Re: IMX6Q SabreAuto h264 decoder not decoding to full range colors