Display Shows Shifting Video (NTSC)

mesahin — Fri, 28 Jun 2019 15:24:20 GMT

Hi Everyone

I am working on a project which is about capture video.

When the system starts(Video input enable) everything is good. The video seems to start at top of the monitor. Everything is flawlessly but the system starts(video input disable) and then the video cable connects to the system. The video seems to start at the CUSTOM location of the monitor. The video starts sometimes the center of the monitor, sometimes bottom of the monitor.

How can ı solve this problem?

Video input source: NTSC
Video input decoder: ADV7180
Video input encoder: adv7391

Linux Kernel: 3.14.28

Video Shifted Down

Information About Frame Buffers

root@mist-mx6:~# fbset --verbose --info --show

Linux Frame Buffer Device Configuration Version 2.1 (23/06/1999)

C) Copyright 1995-1999 by Geert Uytterhoeven

Opening frame buffer device `/dev/fb0'

Using current video mode from `/dev/fb0'

mode "720x487-105"

# D: 27.000 MHz, H: 26.627 kHz, V: 104.832 Hz

geometry 720 487 720 487 16

timings 37037 16 2 17 3 276 1

hsync high

vsync high

laced true

rgba 5/11,6/5,5/0,0/0

endmode

Getting further frame buffer information

Frame buffer device information:

Name : DISP3 BG

Address : 0x40100000

Size : 701280

Type : PACKED PIXELS

Visual : TRUECOLOR

XPanStep : 1

YPanStep : 1

YWrapStep : 1

LineLength : 1440

Accelerator : No

root@mist-mx6:~#

root@mist-mx6:~# fbset -fb /dev/fb1

   mode "720x480-105"
   # D: 27.000 MHz, H: 26.627 kHz, V: 104.832 Hz
   geometry 720 480 720 960 32
   timings 37037 16 2 17 10 276 1
   laced true
   rgba 8/16,8/8,8/0,8/24
   endmode

root@mist-mx6:~#

Re: Display Shows Shifting Video (NTSC)

igorpadykov — Wed, 03 Jul 2019 06:01:20 GMT

Hi Muhammet

one can try to reset ipu channels as on below link or probably reinitialize ipu.

i.MX6DL Display lockyp with IPU_INT_STAT_10, and IPU_INT_STAT_5 errors.

Best regards
igor
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Display Shows Shifting Video (NTSC)

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