VancOutput example is not working for SDI resolutions

Ask software engineering and SDK questions for developers working on Mac OS X, Windows or Linux.
  • Author
  • Message
Offline

parithi

  • Posts: 3
  • Joined: Tue Feb 13, 2018 7:05 am
  • Real Name: Elamparithi Shanmugam

VancOutput example is not working for SDI resolutions

PostTue Feb 13, 2018 2:45 pm

Hi,

I am testing VancOutput example on MiniMonitor with different display modes and following are my observations

* With display mode bmdModeHD1080i50, there is no issue. I can able to receive VANC data properly.
* With display mode bmdModeHD720p50, for one VANC out I am receiving multiple VANC data in
receving end.
* With SDI resolutions (bmdModePALp and bmdModeNTSCp), I am always getting error (0x80000003) from GetBufferForVerticalBlankingLine().

Does Minimonitor support VANC out other than 1920x1080 resolution?
Is there any extra things needs to be done for sending VANC out for other resolutions?
Regards,
Parithi
Offline

Cameron Nichols

Blackmagic Design

  • Posts: 57
  • Joined: Mon Sep 04, 2017 4:05 am

Re: VancOutput example is not working for SDI resolutions

PostWed Feb 14, 2018 5:22 am

Hi Parathi,

You should be able to call GetBufferForVerticalBlankingLine() for all video modes.

For 720p - are you able to tell which lines you are seeing duplicate VANC?

For the NTSCp/PALp - which lineNumber(s) are you passing to GetBufferForVerticalBlankingLine()

Thanks
Cameron
Offline

parithi

  • Posts: 3
  • Joined: Tue Feb 13, 2018 7:05 am
  • Real Name: Elamparithi Shanmugam

Re: VancOutput example is not working for SDI resolutions

PostWed Feb 14, 2018 9:31 am

Hi Cameron,

I am using the line 10 to send/receive vanc data.

For NTSCp/PALp I have tried lines from 1 to 50 . For all lines I got the same error 0x80000003.
Regards,
Parithi
Offline

Cameron Nichols

Blackmagic Design

  • Posts: 57
  • Joined: Mon Sep 04, 2017 4:05 am

Re: VancOutput example is not working for SDI resolutions

PostFri Feb 16, 2018 3:12 am

Hi Parithi,

PALp/NTSCp are not supported SDI output from the DeckLink Mini Monitor. They are listed as a output video mode for the HDMI port.

The valid VANC regions for 720p are lines 6 to 25, can you describe which lines you are seeing duplicate VANC?

Regards
Cameron

Return to Software Developers

Who is online

Users browsing this forum: No registered users and 2 guests