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Explorer
Explorer
583 Views
Registered: ‎05-31-2017

Video locked in landscapre but not in portrait mode

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Hi,

 

I'm back :(

 

I use "AXI4 to video out" for SDI stream video (with SDI to Video bride -> Video to AXI4 -> YCbCr to RGB -> AXI4 to Video and a Video Timing Controler/Generator).

 

At the final I can lock and get Hsync and Vsync only in landscape mode (1920*1080). When I switch to portrait ( I use my computer), i get an underflow ! 

 

Any suggestions?

 

Thanks

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1 Solution

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Moderator
Moderator
819 Views
Registered: ‎11-09-2015

Re: Video locked in landscapre but not in portrait mode

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Hi @pgrangeray,

 

I would use a VDMA or speed up your stream clock.

 

I guess when you use 1080 x 1920 (portrait) the HSYNC and HMARGIN are slightly reduced compared to 1920 x 1080 (landscape). So you might need a stream a bit more faster.

 

But this is only a guess.

 

Regards,

 

Florent


Florent
Product Application Engineer - Xilinx Technical Support EMEA
**~ Don't forget to reply, give kudos, and accept as solution.~**
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2 Replies
Moderator
Moderator
820 Views
Registered: ‎11-09-2015

Re: Video locked in landscapre but not in portrait mode

Jump to solution

Hi @pgrangeray,

 

I would use a VDMA or speed up your stream clock.

 

I guess when you use 1080 x 1920 (portrait) the HSYNC and HMARGIN are slightly reduced compared to 1920 x 1080 (landscape). So you might need a stream a bit more faster.

 

But this is only a guess.

 

Regards,

 

Florent


Florent
Product Application Engineer - Xilinx Technical Support EMEA
**~ Don't forget to reply, give kudos, and accept as solution.~**
0 Kudos
Explorer
Explorer
531 Views
Registered: ‎05-31-2017

Re: Video locked in landscapre but not in portrait mode

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Thank you for you reply.
It seems to work now.
I don't know how, but it's OK.

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