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Altera_Forum's avatar
Altera_Forum
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10 years ago

Frame rate conversion issue

Dear reader, I'm currently evaluating (video processing) DSP IP blocks using Quartus 15.0 and Qsys 15.0 but I am experiencing some issues. I have to solve them before purchasing licenses for ce...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

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The 1080p video needs a 74MHz clock, the input video is a non-standard format - what clock rate is it running at?

Your QSYS diagram only shows a single clock.

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Thanks a lot for your reply!

The input video stream has a pixel clock of 74.25MHz. Indeed the input is non-standard format, that is why I use the frame buffer for rate conversion and the alpha blender for blending with 1080p uniform background to achieve 1080p resolution. For clocked video output I use 148.5MHz to achieve 60Hz fps 1080p.

regards, Richard.